taxonID	type	description	language	source
0385E80C4966C02CFEA2FC19FE442C80.taxon	description	(Figures 1 A, B and 2 A – C)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4966C02CFEA2FC19FE442C80.taxon	materials_examined	Material examined (Figure 3) USA, California, Monterey County, Big Sur area, 40 km south of Carmel, from redwood litter, 14 July 1989, leg. E. E. Lindquist (two females, deposited in CNC), USA, California, Marin County, 0.16 km south of Samuel P. Taylor State Park, decayed redwood stump, 13 December 1958, leg. Obrien C. W. (one female, deposited in CNC), USA, California, Mt Tamalpais, 1000 m above sea level, pine forest, mosses and lichens between rocks, 12 January 1985, leg. M. Neiger (ÉAm- 089, one female, deposited in HNHM).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4966C02CFEA2FC19FE442C80.taxon	diagnosis	Diagnosis Anterior margin of ventrianal shield with two pairs of setae (setae Zv 1 present). Many of marginal and central podonotal setae slim, distally barbed. Setae J 1 and Z 1 – 2 short, smooth, J 4 – 5 short, distally barbed, the rest of J-, Z- and S-setae elongate, distinctly pilose on their distal half. Third pair of opisthonotal pores (Po 3) absent. Dorsal cavities well-sclerotized, the lateral pair significantly larger than the central pair, the axes of the lateral pair converging posteriorly. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of podonotum and anterior surface of opisthonotum bearing net-like ornamentation with refracting dots at the connecting points, posterior surface of opisthonotum behind the level of setae J 2 - Z 3 - S 4 with alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4966C02CFEA2FC19FE442C80.taxon	description	Description – female Length of idiosoma: 290 – 323 µm (303 µm); width: 220 – 247 µm (236 µm) (n = 3). Dorsal side (Figure 1 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Setae j 1 – 2, j 4, z 3 – 5, s 3 – 6, r 2 and r 4 – 5 slim, pointed, distally barbed, the rest of podonotal setae smooth and needle-like. Glands gds 1 (po 1) situated anteromedially to s 1; gdj 4 (po 2) situated medially to z 4; gds 4 (po 3) laterally to line connecting s 4 and s 5, near s 4. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of the shield bearing net-like ornamentation with refracting dots at the connecting points. Opisthonotum with 22 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, R 1 – 7. Setae J 1 short, smooth and needle-like, not reaching insertions of J 2. J 2 – 3 similar in appearance, elongate, distally barbed, J 2 reaching bases of J 3, J 3 reaching insertions of J 4 – 5. Setae J 4 – 5 short and distally barbed. Setae J 1 – 4 constitute parallel rows, setae J 5 inserted medially to these rows, near the anterior margin of central dorsal cavities. Setae Z 1 – 2 short, smooth and needle-like. Setae Z 3 – 5 and S 3 – 5 elongate, distally barbed or feathered. Z 3 reaching insertions of Z 4, S 3 – 5 expanding beyond margin of opisthonotum. S 4 – 5 expanding beyond margin of opisthonotum. Setae S 2 twice as long as Z 1 – 2, distally barbed, inserted below line connecting Z 1 and S 1, near Z 1. Setae S 1 and anterior R-setae slim, distally barbed, length of marginal setae and the number of pili on their surface decreasing posteriorly. Length of opisthonotal setae and distances between their insertions as in Table 1. Glands gdz 6 (Po 1) situated (K, L) epistomes of A. halaskovae sp. nov. deutonymphs; (M) epistome of Amerozercon penicillatus sp. nov. male; (N) epistome of A. penicillatus sp. nov. deutonymph; (O) peritreme of A. suspiciosus female; (P – U) different setae of A. suspiciosus female: (P) z 6; (Q) s 5; (R) J 1; (S) Z 1; (T) S 1; (U) S 2; (V) peritreme of A. halaskovae sp. nov. female; (W – AB) different setae of A. halaskovae sp. nov. female: (W) z 6; (X) s 5; (Y) J 1; (Z) Z 1; (AA) S 1; (AB) S 2. bases in Amerozercon minimus. anteriorly to insertions of Z 1; gdZ 2 (Po 2) anteriorly or anterolaterally to Z 2; third pair of opisthonotal pores (Po 3) absent; gdS 5 (Po 4) anteriorly or anterolaterally to Jv 5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J 2 - Z 3 - S 4) bearing net-like ornamentation with refracting dots at the connecting points, posterior surface with small to medium sized alveolar pits. Dorsal cavities well-sclerotized and of different size. Lateral pair large, C-shaped, with axes converging posteriorly. Central cavities smaller, C-shaped, with parallel axes. Each cavity possesses slightly undulate anterior margins. Ventral side (Figure 1 B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes nearly straight or anteriorly bent, with a small dilatation near the stigma. Peritrematal shields covered by some longitudinal lines. Sternal shield well sclerotized, 59 µm long and 41 µm wide at the level of setae st 2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv 2 with a single opening. Ventrianal chaetotaxy complete, setae Zv 1 present. Postanal seta elongate and smooth, preanal and adanal setae shorter, smooth and needle-like. Setae Jv 5 distally barbed. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4966C02CFEA2FC19FE442C80.taxon	description	Male and immature stages Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4966C02CFEA2FC19FE442C80.taxon	discussion	Remarks The species does not fit to the genus Zercon C. L. Koch, 1836 because of the number of marginal R-setae (six in Zercon species, seven in A. minimus), position of glands gv 3 (situated posterolaterally to adanal setae in Zercon species, anterolaterally to adanal setae in A. minimus) and number of gland openings of gv 2 (two to seven in Zercon species, one in A. minimus). All these characters, the absence of the third pair of opisthonotal pores (Po 3) and the differently shaped and sized dorsal cavities suggest that the species is closely related to Amerozercon suspiciosus Halašková, 1969 and other Amerozercon species described below. Therefore I transfer the species from Zercon to the genus Amerozercon.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	description	(Figures 2 D – F, O – U and 4 A, B)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	materials_examined	Material examined (Figure 3) USA, Tennessee, Greenbrier Ranger Station, Great Smoky Mountains National Park, 8 August 1956, leg. J. L. Bohnsack (ÉAm- 028, three females, one male, deposited in HNHM), USA, Tennessee, Great Smoky Mountains National Park, 1220 m elevation, 28 July 1956, leg. J. L. Bohnsack (ÉAm- 033, three females, one male, deposited in HNHM).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	diagnosis	Diagnosis Anterior margin of ventrianal shield with one pair of setae (setae Zv 1 absent). Marginal podonotal setae and j 1 – 2 feathered, central setae smooth or barbed. Setae Z 1 – 2 smooth, J 1 – 2 and S 2 barbed, the rest of opisthonotal setae distinctly pilose. Third pair of opisthonotal pores (Po 3) absent. Glands gdS 5 (Po 4) situated anteriorly to S 5. Dorsal cavities well-sclerotized, the central pair significantly larger than the lateral pair, their axes converging posteriorly. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of podonotum and anterior surface of opisthonotum bearing net-like ornamentation with refracting dots at the connecting points, posteriormost surface of opisthonotum behind the level of setae J 4 - Z 4 - S 4 with alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	description	Description – female Length of idiosoma: 317 – 323 µm (320 µm); width: 247 µm (n = 2). Dorsal side (Figure 4 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z 3, s 2, r 2, s 3, r 4, r 5, s 6) and j 1 – 2 densely pilose, feathered. Setae j 3, z 4, s 4 and s 5 barbed, j 4 – 6, z 2, z 5 – 6 and s 1 smooth, needle-like. Glands gds 1 (po 1) not visible; gdj 4 (po 2) situated medially to z 4; gds 4 (po 3) laterally to line connecting s 4 and s 5, near s 4. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of the shield bearing net-like ornamentation with refracting dots at the connecting points. Opisthonotum with 22 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, R 1 – 7. None of opisthonotal setae reaching bases of the following one in the series. Each J-setae short, J 1 – 2 barbed, J 3 – 5 pointed and pilose. Setae J 1 – 5 constitute parallel rows, setae J 5 inserted near the anterolateral margin of central dorsal cavities. Setae Z 1 – 2 short, smooth and needle-like. Setae Z 3 – 5 and S 3 – 5 feathered, longer than J-setae. S 4 – 5 expanding beyond margin of opisthonotum. Setae S 2 inserted on line connecting Z 1 and S 1, somewhat nearer to Z 1. Length of marginal setae and the number of pili on their surface decreasing posteriorly. Length of opisthonotal setae and distances between their insertions as in Table 2. Glands gdz 6 (Po 1) situated anteromedially to insertions of S 2; gdZ 2 (Po 2) on line connecting Z 2 and S 2, near Z 2; third pair of opisthonotal pores (Po 3) absent; gdS 5 (Po 4) anteriorly to S 5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J 4 - Z 4 - S 4) bearing net-like ornamentation with refracting dots at the connecting points, posteriormost surface with small to medium sized alveolar pits. Dorsal cavities well-sclerotized and of different size. Lateral pair small, saddle-like, with approximately parallel axes. Central cavities significantly larger, arcuate, with axes converging posteriorly. Ventral side (Figure 4 B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes slightly bent, with a distinct dilatation near the stigma (Figure 2 O). Peritrematal shields covered by longitudinal lines. Sternal shield well sclerotized, 54 µm long and 38 µm wide at the level of setae st 2, with concave bases in Amerozercon suspiciosus. posterior margin and reticulate ornamentation. Adgenital glands gv 2 with two openings. Ventrianal chaetotaxy incomplete, setae Zv 1 absent. Postanal seta short and finely pilose, preanal and adanal setae short, smooth and needle-like. Setae Jv 5 pilose. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	description	Immature stages Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4963C021FE35FDC6FF7929DD.taxon	discussion	Remarks The species was described on the basis of a single male specimen. The description and illustrations of Halašková (1969) correspond to the male specimen collected in the Great Smoky Mountains National Park; however, some central setae of podonotum are less pilose on the specimens described above. In several Zerconidae species it is a known phenomenon that some setae show intraspecific variation regarding the degree of pilosity (e. g. Ujvári 2009 a), therefore I suppose that the specimens collected in the Great Smoky Mountains National Park are conspecific with A. suspiciosus. Halašková (1969) diagnosed glands gds 1 (po 1) as they are situated anteriorly to insertions of j 3. In that position there are conspicuous rotund structures, but they are muscle scars, not gland poroids. Halašková (1969) gave the following dimensions of the idiosoma of male: body length 519 µm, width 403 µm. This size is significantly larger than that of the male specimen from Great Smoky Mountains National Park. But length of the setae of both specimens show similar measurements, and their proportion to the body is also similar based on the illustrations of Halašková (1969). Therefore it seems that Halašková (1969) measured erroneously the dimensions of idiosoma, the correct values (calculated from the length of setae, measuring the original figures) are the following: length 218 µm, width 177 µm. Latter values are approximately similar to the dimensions of the specimen from Great Smoky Mountains National Park. Length of setae S 4 (marked as S 3 in the original description) is also measured erroneously, as 29 µm. Those are similar to setae S 5, and their size is only 19 µm in the type specimen. In a previous paper, the presence of ventrianal setae Zv 1 in A. suspiciosus was discussed (Ujvári 2011 a). Halašková (1969) diagnosed Zv 1 as absent. Based on her figures, however, it is evident that the number of setae represents complete ventrianal chaetotaxy. I concluded that Zv 1 is present on the type specimen, but it has shifted posteriorly as a result of an aberration. But the observation of the specimens from Great Smoky Mountains National Park indicated that the species lacks Zv 1 indeed, hence the question arises: is the specimen from South Carolina of Halašková conspecific with the Tennessee specimens? There are three possible explanations for the anomaly. The first is that the type specimen really lacks Zv 1 and Halašková erroneously identified an extra pair of setae (perhaps one of the leg setae). The second is that the type specimen lacks Zv 1, but has an extra pair of ventrianal setae, which is a very rare phenomenon within the family and in most cases it is the result of an aberration. The third, and most likely, is that Zv 1 is present, but shifted posteriorly. Although many authors use the presence or absence of Zv 1 as a major distinctive feature of not even species, but genera, this should be handled with care, because this character often shows sexual dimorphism or intraspecific variation (see Ujvári 2009 b; Díaz-Aguilar and Ujvári 2010). The variation of this character is rarely recognized or interpreted. In conclusion, it is thought that the type specimen of A. suspiciosus is aberrant and conspecific with the specimens described above, which usually lack setae Zv 1. This should certainly be confirmed by observing other specimens collected in the type locality.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	description	(Figures 2 G, H and 5 A, B)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	materials_examined	Material examined (Figure 3) Holotype: female, USA, Virginia, Nelson County, Washington National Forest, Blue Ridge Parkway, Wintergreen Trail, ex. litter and moss by small stream, 1 October 1992, leg. V. Behan. Paratype: one female, locality and date as for the holotype. Both specimens are deposited in CNC (coll. number of holotype: CNCAZ 0482; coll. number of paratype: CNCAZ 0484).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	diagnosis	Diagnosis Anterior margin of ventrianal shield with two pairs of setae (setae Zv 1 present). Central podonotal setae, s 1, r 1, J 1, Z 1 and S 2 short and smooth, other dorsal setae distinctly pilose. Third pair of opisthonotal pores (Po 3) absent. Dorsal cavities of different size, the lateral pair large, well-sclerotized, ring-shaped, the central pair weakly developed. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of podonotum and anterior surface of opisthonotum bearing net-like ornamentation with refracting dots at the connecting points, posterior surface of opisthonotum with alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	description	Description – female Length of idiosoma: 333 – 344 µm (339 µm); width: 274 µm (n = 2). Dorsal side (Figure 5 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z 3, s 2, r 2, s 3, r 4, r 5, s 6) and j 1 – 2 feathered and generally slightly longer than other podonotal setae, which are smooth and needlelike. Glands gds 1 (po 1) situated anteromedially to s 1; gdj 4 (po 2) situated medially to z 4; gds 4 (po 3) on line connecting s 4 and s 5, in equidistant position. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface bearing net-like ornamentation with refracting dots at the connecting points. Opisthonotum with 21 – 22 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, marginal R-series with six to seven pairs of setae (usually seven pairs). None of opisthonotal setae reaching bases of the following ones in the series. Each J-seta short, J 1 smooth and needlelike, J 2 – 5 pointed and pilose. Setae J 1 – 5 constitute parallel rows, setae J 5 inserted bases in Amerozercon annularis sp. nov. anteriorly to central dorsal cavities and not reaching their margins. Setae Z 1 and S 2 short, smooth and needle-like. Setae S 2 situated on line connecting Z 1 and S 1, somewhat nearer to Z 1. Setae Z 2 – 4 and S 3 – 4 short, pointed, pilose, none of them expanding beyond the margin of opisthonotum. Setae Z 5 and S 5 feathered, longer than the rest of opisthonotal setae. Each marginal seta feathered, approximately as long as central opisthonotal setae. Length of opisthonotal setae and distances between their insertions as in Table 3. Glands gdz 6 (Po 1) situated anteromedially to insertions of S 2; gdZ 2 (Po 2) on line connecting Z 1 and Z 2, near Z 2; third pair of opisthonotal pores (Po 3) absent; gdS 5 (Po 4) anteromedially to S 5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J 2 - Z 2 - S 3) bearing net-like ornamentation with refracting dots at the connecting points, posterior surface with small to medium sized alveolar pits. Lateral dorsal cavities large, well-sclerotized and ring-shaped. The central pair small, weakly developed, without marginal sclerotization. Ventral side (Figure 5 B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes bent, with a distinct dilatation near the stigma. Peritrematal shields covered by some longitudinal lines. Sternal shield well sclerotized, 62 µm long and 45 µm wide at the level of setae st 2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv 2 with one or two openings. Ventrianal chaetotaxy complete, setae Zv 1 present. Postanal seta, preanal and adanal setae short, smooth and needle-like. Setae Jv 5 similar in appearance to marginal setae of opisthonotum, feathered. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	description	six teeth, movable digit with four or five teeth. Epistome (Figure 2 G, H) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011 b). Male and immature stages Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	etymology	Etymology The name of the new species refers to the ring-shaped lateral dorsal cavities (the Latin epithet “ annularis ” means annular, ringed).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C496EC026FE3AFB2CFBC62EFB.taxon	discussion	Remarks The new species corresponds in many important diagnostic characteristics (e. g. shape of peritrematal setae, number of R-setae, presence of gland openings gv 2, situation of gv 3 etc.) with the genus Amerozercon. Altough male specimens have not been found (which carry one of the most important character of the genus), the absence of the third pair of opisthonotal pores (Po 3) and the different size and shape of dorsal cavities also suggest that the species is related to A. suspiciosus Halašková, 1969 and other species described below, therefore A. annularis sp. nov. is placed in the genus Amerozercon. The weakly developed central dorsal cavities without marginal sclerotization and the large, ring-shaped lateral dorsal cavities are unique features within the genus.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	description	(Figures 2 I and 6 A, B)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	materials_examined	Material examined (Figure 3) Holotype: female, USA, California, Plumas County, Warner Creek, 1525 m above sea level, 12.8 km northwest of Chester, from cottonwood litter, 30 July 1985, leg. E. E. Lindquist. Holotype is deposited in CNC (coll. number: CNCAZ 0603).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	diagnosis	Diagnosis Anterior margin of ventrianal shield with two pairs of setae (setae Zv 1 present). Central podonotal setae, s 1, r 1, J-setae, Z 1 – 2, S 2 and R 2 – 7 short and smooth, other dorsal setae feathered. Third pair of opisthonotal pores (Po 3) absent. Dorsal cavities well sclerotized and of different size, the central pair larger, auricle-shaped. Podonotum covered by tile-like pattern, anterior surface of opisthonotum bearing netlike ornamentation with refracting dots at the connecting points, posterior surface with alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	description	Description – female Length of idiosoma: 328 µm; width: 231 µm (n = 1). Dorsal side (Figure 6 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z 3, s 2, r 2, s 3, r 4, r 5, s 6) and j 1 – 2 feathered, other podonotal setae smooth and needle-like. Setae j 2, z 2, s 3, r 5 and s 6 markedly longer than central setae. Glands gds 1 (po 1) situated anteromedially to s 1; gdj 4 (po 2) situated anteromedially to z 4; gds 4 (po 3) on line connecting s 4 and s 5, near s 4. Whole surface of podonotum covered by tiles possessing undulate posterior margins. Opisthonotum with 22 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, R 1 – 7. Each J-seta short (their length increasing posteriorly), smooth and needle-like, none of them reaching bases of the following one in the series. Setae J 1 – 4 constitute parallel rows, setae J 5 inserted somewhat lateral to these rows, near the anterolateral margin of central dorsal cavities. Setae Z 1 – 2 and S 2 short, smooth and needle-like. Setae S 2 situated slightly below the line connecting Z 1 and S 1, somewhat nearer to Z 1. Setae Z 3 – 5 and S 3 – 5 elongate, feathered, Z 4 and S 3 – 5 expanding beyond the margin of opisthonotum. Among marginal setae S 1 approximately as long as S 2, but feathered, R 1 barbed. Remaining R-setae smooth and pointed, their length decreasing posteriorly. Length of opisthonotal setae and distances between their insertions as in Table 4. Glands gdz 6 (Po 1) situated anterolaterally to insertions of Z 1; gdZ 2 (Po 2) laterally to Z 2; third pair of opisthonotal pores (Po 3) absent; gdS 5 (Po 4) on line connecting S 5 and Jv 5, near Jv 5. bases in Amerozercon auricularis sp. nov. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J 3 - Z 3 - S 3) bearing net-like ornamentation with refracting dots at the connecting points, posterior surface with small to medium sized alveolar pits. Dorsal cavities wellsclerotized and of different size. Lateral pair small, saddle-like, with undulate margins and axes converging anteriorly. Central cavities significantly larger, auricle-shaped, with axes converging posteriorly. Ventral side (Figure 6 B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes nearly straight, with a small dilatation near the stigma. On the shield only a few arcuate lines can be observed near the peritrematal pore. Sternal shield well sclerotized, 65 µm long and 48 µm wide at the level of setae st 2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv 2 with two openings on the right side and with three openings on the left side of the single specimen. Ventrianal chaetotaxy complete, setae Zv 1 present. Postanal seta elongate and smooth, preanal and adanal setae short, smooth and needle-like. Setae Jv 5 elongate, feathered. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	description	Male and immature stages Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	etymology	Etymology The name of the new species refers to the auricle-shaped central dorsal cavities (the Latin epithet “ auricularis ” means auricular).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	discussion	Remarks The new species corresponds in many diagnostic characteristics (e. g. shape of peritrematal setae, number of R-setae, presence of gland openings gv 2, situation of gv 3) with the genus Amerozercon. Altough male specimens have not been found yet (which carry one of the most important character of the genus), the absence of the third pair of opisthonotal pores (Po 3) and the different size and shape of dorsal cavities also suggest that the species is related to the type-species, A. suspiciosus Halašková, 1969, therefore A. auricularis sp. nov. is placed in the genus Amerozercon. It is important to note that the R-setae of the new species are smooth and pointed, which distinguishes it from the previously known Amerozercon species, but this should not be used as a feature that is appropriate to characterize genera. The short, smooth J- and R-setae, the elongate, feathered S 3 – 5 and Z 3 – 5 setae and the auricle-shaped central cavities are unique characters within the genus.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	description	(Figures 2 J – L, 7 A – D, 8 A)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	materials_examined	Material examined (Figure 3) Holotype: female, USA, Tennessee, Cumberland County, Cumberland, 7 July 1956, leg. J. L. Bohnsack (ÉAm- 007). Paratypes: Six females, three males and five deutonymphs, locality and date as for the holotype. The holotype, four females, two males and five deutonymphs of paratypes are deposited in HNHM, two females and one male of paratypes are deposited in CNC (coll. number of paratypes: CNCAZ 0791 – CNCAZ 0793).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	diagnosis	Diagnosis Anterior margin of ventrianal shield with two pairs of setae (setae Zv 1 present) in females, Zv 1 absent in males. Dorsal setae short and distinctly pilose, with the exception of s 1 and r 1 which smooth and needle-like. Third pair of opisthonotal pores (Po 3) situated anteromedially to Z 4. Glands gdS 5 (Po 4) situated posteriorly to S 5. Dorsal cavities well-sclerotized and of different size, the larger, central pair posteriorly bordered by a strongly sclerotized, arcuate ledge. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of podonotum and anterior surface of opisthonotum bearing net-like ornamentation with refracting dots at the connecting points, posterior surface of opisthonotum behind the level of setae J 2 - Z 2 - S 3 with alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	description	Description – female Length of idiosoma: 312 – 317 µm (313 µm); width: 237 – 248 µm (241 µm) (n = 7). Dorsal side (Figure 7 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z 3, s 2, r 2, s 3, r 4, r 5, s 6) and j 1 densely pilose and somewhat longer than central setae. Among central podonotal setae s 1 short, smooth and needle-like, j 5 and z 5 finely pilose, others densely pilose. Glands gds 1 (po 1) not visible; gdj 4 (po 2) situated medially to z 4; gds 4 (po 3) laterally to line connecting s 4 and s 5, near s 4. Anterior and lateral surface of podonotum covered by tile-like pattern, posterocentral surface of the shield bearing net-like ornamentation with refracting dots at the connecting points. Opisthonotum with 21 – 22 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, marginal R-series with six to seven pairs of setae, seven pairs in majority of specimens. Each opisthonotal seta short, densely plumose. None of these setae reaching bases of the following one in the series, J-setae reaching approximately half the distance towards the insertion of the following setae. The distance between setae J 2 - J 2 and J 5 - J 5 larger than that between other setae of the series. Setae J 5 situated on the level of dorsal cavities. Setae S 2 situated on line connecting Z 1 and S 1, somewhat nearer to Z 1. In contrast to S 5, setae S 3 – 4 not reaching beyond margin of the shield. Setae S 5 and Z 5 longer than other podonotal setae. Length of marginal setae decreasing posteriorly. Length of opisthonotal setae and distances between their insertions as in Table 5. Glands gdz 6 (Po 1) situated anteromedially to insertions of S 2; gdZ 2 (Po 2) on or laterally to line connecting Z 1 and Z 2, near Z 2; third pair of opisthonotal pores (Po 3) situated anteromedially to Z 4; gdS 5 (Po 4) posteriorly to S 5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J 2 - Z 2 - S 3) bearing net-like ornamentation with refracting dots at the connecting points, posterior surface with small to medium sized alveolar pits. Dorsal cavities well-sclerotized and of different size. Lateral pair small, saddlelike, with axes converging anteriorly. Central cavities significantly larger, C-shaped, facing each other, posteriorly bordered by a strongly sclerotized, arcuate ledge. Ventral side (Figure 7 B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes slightly bent, with a small dilatation near the stigma (Figure 2 V). Peritrematal shields covered by some longitudinal lines. Sternal shield well sclerotized, 57 µm long and 38 µm wide at the level of setae st 2, with nearly straight posterior margin and reticulate ornamentation. Adgenital glands gv 2 with two openings. Ventrianal chaetotaxy complete, setae Zv 1 present. Postanal seta short and finely pilose, preanal and adanal setae short, smooth and needle-like. Setae Jv 5 similar to marginal setae of opisthonotum, densely plumose. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	description	Description – male Length of idiosoma: 247 – 269 µm (258 µm); width: 194 – 204 µm (199 µm) (n = 3). Dorsal side (Figure 7 C). Chaetotaxy, adenotaxy and ornamentation of dorsal shields similar to that of female, except setae j 5, which are smooth and needle-like. Length of opisthonotal setae and distances between their insertions as in Table 5. Ventral side (Figure 7 D). Posterolateral parts of peritrematal shields fused to ventrianal shield on level of setae R 1, the separating membranous slit between ventral and dorsal shields absent. Shape of peritrematal setae as for the female. Peritremes slightly bent anteriorly, without remarkable dilatation near the stigma. Peritrematal shields covered by some longitudinal lines. Sternigenital shield possessing four pairs of setae (st 5 absent). Anterior to the genital opening, the shield is covered by reticulate ornamentation, beyond the level of setae st 4 irregular ditches can be observed on its surface. Adgenital glands gv 2 with two openings. In contrast to females, the ventrianal chaetotaxy incomplete, setae Zv 1 absent. Other ventrianal characters similar to those of female.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	description	Description – deutonymph Length of idiosoma: 268 – 274 µm (270 µm); width: 199 – 204 µm (202 µm) (n = 5). Dorsal side (Figure 8 A). Position of dorsal setae similar to that of adults, however differences in shape and length of setae are more expressed. On podonotum, setae s 1, z 5 – 6 and j 6 significantly shorter than other podonotal setae. Setae j 5 smooth and needle-like, s 1, z 5 – 6 and j 6 finely pilose, other podonotal setae distinctly elongate and densely pilose. Opisthonotal setae J 1 – 5 and Z 1 – 2 short, pointed and pilose. J-setae constitute parallel rows, their length decreasing posteriorly. J 5 situated on level of dorsal cavities. Setae Z 3 – 4 and S 1 – 2 approximately twice as long as Z 1 – 2. Setae Z 5 and S 3 – 5 elongate and possessing longer pili than other setae of the shield, S 3 – 5 reaching beyond the margin of the shield. Length of opisthonotal setae and distances between their insertions as in Table 5. Position of gland poroids similar to that of adults. The lateral, anterocentral and central surface of podonotum covered by tiles possessing undulate posterior margins, posterocentral surface with a couple of small pits. Opisthonotum with small to medium sized alveolar pits, the net-like ornamentation (characteristic for the adults) can only be found on level of setae J 1 - Z 1. The central pair of dorsal cavities larger than the lateral pair, both pairs with approximately parallel axes and undulate anterior margins.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	description	Protonymph and larva Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	etymology	Etymology The new species is dedicated to the memory of Dr Vĕra Halašková, one of the most prominent researchers of Zerconidae and establisher of the genus Amerozercon.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4974C03EFE44FCDBFE192E4D.taxon	discussion	Remarks The new species fts most diagnostic characteristics (such as shape of peritrematal setae, the fusion of peritrematal and ventrianal shields of male, number of pairs of R-setae, appearance of most dorsal setae and dorsal cavities, ornamentation of dorsal shields etc.) to the type species of the genus Amerozercon, A. suspiciosus Halašková, 1969. The two species can be distinguished by the shape of setae Z 1 – 2 (smooth in A. suspiciosus, densely pilose in A. halaskovae sp. nov.), the general appearance of pilose podonotal and opisthonotal setae [each of them more strikingly pilose and bear longer pili in A. halaskovae sp. nov. (Figure 2 W – AB) than in A. suspiciosus (Figure 2 P – U)], the presence of the third pair of opisthonotal pores (Po 3) and a pair of strongly sclerotized, arcuate ledges behind central dorsal cavities in A. halaskovae sp. nov. and furthermore in the position of glands gdS 5 (Po 4) (situated anteriorly to S 5 in A. suspiciosus, posteriorly to S 5 in A. halaskovae sp. nov.). A further difference between females of the two species is that A. suspiciosus lacks setae Zv 1 (see the description of the species with remarks above).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	description	(Figures 2 M, N, 8 B, 9 A, B)	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	materials_examined	Material examined (Figure 3) Holotype: male, USA, Tennessee, Blount County, Cades Cove, 30 July 1956, leg. J. L. Bohnsack (ÉAm- 013). Paratypes: three males and one deutonymph, locality and date as for the holotype. Holotype and paratypes are deposited in HNHM.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	diagnosis	Diagnosis of male Anterior margin of ventrianal shield with two pairs of setae (setae Zv 1 present). Dorsal setae short and plumose, with the exception of j 5 and r 1 which are smooth and needle-like. Third pair of opisthonotal pores (Po 3) absent. Dorsal cavities uniform, with undulate anterior margin. Podonotum anteriorly covered by tile-like pattern, posteriorly bearing distinct pits, opisthonotum with large alveolar pits.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	description	Description – male Length of idiosoma: 258 – 270 µm (265 µm); width: 188 – 200 µm (192 µm) (n = 3). Dorsal side (Figure 9 A). Podonotum with 20 pairs of setae, j 1 – 6, z 2 – 6, s 1 – 6, r 2 and r 4 – 5 inserted dorsally, r 1 and r 3 inserted ventrally, on peritrematal shields (see at ventral side). Podonotal setae short, densely plumose except r 1 and j 5 which are smooth and needle-like. Marginal setae of podonotum (z 3, s 2, r 2, s 3, r 4, r 5, s 6) and j 1 somewhat longer than central setae. Glands gds 1 (po 1) situated anteromedially to s 1; gdj 4 (po 2) situated anteromedially to z 4; gds 4 (po 3) on or somewhat laterally to line connecting s 4 and s 5, near s 4. Anterior surface of podonotum covered by tiles possessing undulate posterior margins, posterior surface of the shield with distinct, alveolar pits. Opisthonotum with 21 – 23 pairs of setae, J 1 – 5, Z 1 – 5, S 1 – 5, marginal R-series with six to eight pairs of setae, mostly seven pairs can be observed. Each opisthonotal seta uniform, short, densely plumose. None of these setae reaching bases of the following one in the series, J-setae reaching approximately half the distance towards the insertion of the following setae. J-setae constitute nearly parallel rows, setae J 5 situated on the level of dorsal cavities. Setae S 2 shifted near the Z-series, situated laterally to line connecting Z 1 and Z 2, equidistant between these. Setae S 3 – 5 not reaching beyond margin of the shield. Length of opisthonotal setae and distances between their insertions as in Table 6. Glands gdz 6 (Po 1) situated anteriorly to insertions of Z 1; gdZ 2 (Po 2) medially to line connecting Z 1 and Z 2, on the level of S 2; third pair of opisthonotal pores (Po 3) absent; gdS 5 (Po 4) medially to S 5. Marginal serration shallow and obtuse. Whole opisthonotal shield covered by relatively large, distinct, alveolar pits. Dorsal cavities well-developed, uniform, with undulate anterior margin. Ventral side (Figure 9 B). Posterolateral parts of peritrematal shields fused to ventrianal shield on level of setae R 1, the separating membranous slit between ventral and dorsal shields absent. Shape of peritrematal setae typical for the genus. Peritremes straight, without dilatation near the stigma. Peritrematal shields covered by some longitudinal lines. Sternigenital shield with five pairs of setae, ornamented by arcuate lines around the genital opening, possessing irregular ditches beyond the level of setae st 4. Adgenital glands gv 2 with a single opening. Ventrianal chaetotaxy complete, setae Zv 1 present. Postanal seta, preanal and adanal setae short, smooth and needle-like. Setae Jv 5 similar to marginal setae of opisthonotum, densely plumose. Anal valves with vestigial euanal setae. Glands gv 3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of Jv 3 - Zv 3 - Zv 4.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	description	Description – deutonymph Length of idiosoma: 263 µm; width: 183 µm (n = 1). Dorsal side (Figure 8 B). Shape and situation of dorsal setae similar to that of adults, however differences in length of setae are more expressed. On podonotum, setae j 1, z 3, s 3, r 5 and s 6 significantly longer than other podonotal setae. Opisthonotal setae Z 5 and S 5 longer than other setae of the shield. Setae of the S-series possessing longer pili than central J- and Z-setae, hence seem to be wider. Setae J 5 situated slightly beyond level of dorsal cavities. Length of opisthonotal setae and distances between their insertions as in Table 6. Position of gland poroids similar to that of adults, third pair of opisthonotal pores (Po 3) absent on deutonymphs as well. Ornamentation of podonotal shield weakly developed, only a few undulate lines can be recognized as precursors of the tiles of the adults. Pattern of opisthonotum as in adults, anterior margin of dorsal cavities less sclerotized.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	description	Female, protonymph and larva Unknown.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	etymology	Etymology The name of the new species refers to to the brush-shaped setae (the Latin epithet “ penicillatus ” means penicillate, resembling a brush of fine hairs).	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
0385E80C4971C032FE02FC9BFB0D28E8.taxon	discussion	Remarks The new species is placed in the genus Amerozercon based on the consilience of major diagnostic characters (e. g. shape of peritrematal setae, the fusion of peritrematal and ventrianal shields of male, number of R-setae). The absence of the third pair of opisthonotal pores (Po 3) and the shape of marginal setae of opisthonotum also suggest that the species is related to the type-species of the genus. With respect to the general appearance of dorsal setae, the ornamentation and uniformity of dorsal cavities, the new species is most closely related to Amerozercon barbatus Ujvári, 2011. The two species can easily be distinguished by the significantly shorter opisthonotal setae of A. penicillatus sp. nov., the shape of r 1 (smooth in A. penicillatus sp. nov., barbed in A. barbatus) and the absence of the third pair of opisthonotal pores (Po 3) in A. penicillatus sp. nov. The situation of glands gds 4 (po 3), gdz 6 (Po 1) and gdZ 2 (Po 2) is also slightly different in the two species, but these small differences may hardly be used for distinction, until only a few specimens are known.	en	Ujvári, Zsolt (2013): Amerozercon Halašková, 1969 species (Acari: Mesostigmata: Zerconidae) of the United States of America. Journal of Natural History (J. Nat. Hist.) 47 (15 - 16): 1093-1120, DOI: 10.1080/00222933.2012.752047, URL: http://dx.doi.org/10.1080/00222933.2012.752047
