identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
0385E80C4966C02CFEA2FC19FE442C80.text	0385E80C4966C02CFEA2FC19FE442C80.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon minimus (Sellnick 1958) Ujvári 2013	<div><p>Amerozercon minimus (Sellnick, 1958) comb. nov.</p> <p>(Figures 1A, B and 2A–C)</p> <p>Material examined (Figure 3)</p> <p>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).</p> <p>Diagnosis</p> <p>Anterior margin of ventrianal shield with two pairs of setae (setae Zv1 present). Many of marginal and central podonotal setae slim, distally barbed. Setae J1 and Z1–2 short, smooth, J4–5 short, distally barbed, the rest of J-, Z- and S-setae elongate, distinctly pilose on their distal half. Third pair of opisthonotal pores (Po3) 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 J2-Z3-S4 with alveolar pits.</p> <p>Description – female</p> <p>Length of idiosoma: 290–323 µm (303 µm); width: 220–247 µm (236 µm) (n = 3).</p> <p>Dorsal side (Figure 1A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Setae j1–2, j4, z3–5, s3–6, r2 and r4–5 slim, pointed, distally barbed, the rest of podonotal setae smooth and needle-like. Glands gds1 (po1) situated anteromedially to s1; gdj4 (po2) situated medially to z4; gds4 (po3) laterally to line connecting s4 and s5, near s4. 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.</p> <p>Opisthonotum with 22 pairs of setae, J1–5, Z1–5, S1–5, R1–7. Setae J1 short, smooth and needle-like, not reaching insertions of J2. J2–3 similar in appearance, elongate, distally barbed, J2 reaching bases of J3, J3 reaching insertions of J4–5. Setae J4–5 short and distally barbed. Setae J1–4 constitute parallel rows, setae J5 inserted medially to these rows, near the anterior margin of central dorsal cavities. Setae Z1–2 short, smooth and needle-like. Setae Z3–5 and S3–5 elongate, distally barbed or feathered. Z3 reaching insertions of Z4, S3–5 expanding beyond margin of opisthonotum. S4–5 expanding beyond margin of opisthonotum. Setae S2 twice as long as Z1–2, distally barbed, inserted below line connecting Z1 and S1, near Z1. Setae S1 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 gdz6 (Po1) situated</p> <p>(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) z6; (Q) s5; (R) J1; (S) Z1; (T) S1; (U) S2; (V) peritreme of A. halaskovae sp. nov. female; (W–AB) different setae of A. halaskovae sp. nov. female: (W) z6; (X) s5; (Y) J1; (Z) Z1; (AA) S1; (AB) S2.</p> <p>bases in Amerozercon minimus. anteriorly to insertions of Z1; gdZ2 (Po2) anteriorly or anterolaterally to Z2; third pair of opisthonotal pores (Po3) absent; gdS5 (Po4) anteriorly or anterolaterally to Jv5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J2-Z3-S4) 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.</p> <p>F, female.</p> <p>Ventral side (Figure 1B). 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 st2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv2 with a single opening. Ventrianal chaetotaxy complete, setae Zv1 present. Postanal seta elongate and smooth, preanal and adanal setae shorter, smooth and needle-like. Setae Jv5 distally barbed. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv4.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1–2 similar in appearance, elongate, needle-like. Setae h3 shorter than h1–2, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively slen- der, fixed digit with six teeth, movable digit with four teeth. Epistome (Figure 2A–C) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>Male and immature stages</p> <p>Unknown.</p> <p>Remarks</p> <p>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 gv3 (situated posterolaterally to adanal setae in Zercon species, anterolaterally to adanal setae in A. minimus) and number of gland openings of gv2 (two to seven in Zercon species, one in A. minimus). All these characters, the absence of the third pair of opisthonotal pores (Po3) 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.</p> </div>	https://treatment.plazi.org/id/0385E80C4966C02CFEA2FC19FE442C80	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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.text	0385E80C4963C021FE35FDC6FF7929DD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon suspiciosus Halaskova 1969	<div><p>Amerozercon suspiciosus Halašková, 1969</p> <p>(Figures 2D–F, O–U and 4A, B)</p> <p>Material examined (Figure 3)</p> <p>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).</p> <p>Diagnosis</p> <p>Anterior margin of ventrianal shield with one pair of setae (setae Zv1 absent). Marginal podonotal setae and j1–2 feathered, central setae smooth or barbed. Setae Z1–2 smooth, J1–2 and S2 barbed, the rest of opisthonotal setae distinctly pilose. Third pair of opisthonotal pores (Po3) absent. Glands gdS5 (Po4) situated anteriorly to S5. 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 J4-Z4-S4 with alveolar pits.</p> <p>Description – female</p> <p>Length of idiosoma: 317–323 µm (320 µm); width: 247 µm (n = 2).</p> <p>Dorsal side (Figure 4A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z3, s2, r2, s3, r4, r5, s6) and j1–2 densely pilose, feathered. Setae j3, z4, s4 and s5 barbed, j4–6, z2, z5–6 and s1 smooth, needle-like. Glands gds1 (po1) not visible; gdj4 (po2) situated medially to z4; gds4 (po3) laterally to line connecting s4 and s5, near s4. 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.</p> <p>Opisthonotum with 22 pairs of setae, J1–5, Z1–5, S1–5, R1–7. None of opisthonotal setae reaching bases of the following one in the series. Each J-setae short, J1–2 barbed, J3–5 pointed and pilose. Setae J1–5 constitute parallel rows, setae J5 inserted near the anterolateral margin of central dorsal cavities. Setae Z1–2 short, smooth and needle-like. Setae Z3–5 and S3–5 feathered, longer than J-setae. S4–5 expanding beyond margin of opisthonotum. Setae S2 inserted on line connecting Z1 and S1, somewhat nearer to Z1. 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 gdz6 (Po1) situated anteromedially to insertions of S2; gdZ2 (Po2) on line connecting Z2 and S2, near Z2; third pair of opisthonotal pores (Po3) absent; gdS5 (Po4) anteriorly to S5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J4-Z4-S4) 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.</p> <p>Ventral side (Figure 4B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes slightly bent, with a distinct dilatation near the stigma (Figure 2O). Peritrematal shields covered by longitudinal lines. Sternal shield well sclerotized, 54 µm long and 38 µm wide at the level of setae st2, with concave</p> <p>bases in Amerozercon suspiciosus. posterior margin and reticulate ornamentation. Adgenital glands gv2 with two openings. Ventrianal chaetotaxy incomplete, setae Zv1 absent. Postanal seta short and finely pilose, preanal and adanal setae short, smooth and needle-like. Setae Jv5 pilose. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv4.</p> <p>F, female.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1 elongate, needle-like. Setae h2–3 shorter than h1, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae (Figure 2F) relatively slender, fixed digit with six teeth, movable digit with four teeth. Epistome (Figure 2D, E) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>Immature stages</p> <p>Unknown.</p> <p>Remarks</p> <p>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 2009a), therefore I suppose that the specimens collected in the Great Smoky Mountains National Park are conspecific with A. suspiciosus.</p> <p>Halašková (1969) diagnosed glands gds1 (po1) as they are situated anteriorly to insertions of j3. In that position there are conspicuous rotund structures, but they are muscle scars, not gland poroids.</p> <p>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.</p> <p>Length of setae S4 (marked as S 3 in the original description) is also measured erroneously, as 29 µm. Those are similar to setae S5, and their size is only 19 µm in the type specimen.</p> <p>In a previous paper, the presence of ventrianal setae Zv 1 in A. suspiciosus was discussed (Ujvári 2011a). Halašková (1969) diagnosed Zv1 as absent. Based on her figures, however, it is evident that the number of setae represents complete ventrianal chaetotaxy. I concluded that Zv1 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 Zv1 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 Zv1 and Halašková erroneously identified an extra pair of setae (perhaps one of the leg setae). The second is that the type specimen lacks Zv1, 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 Zv1 is present, but shifted posteriorly. Although many authors use the presence or absence of Zv1 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 2009b; Díaz-Aguilar and Ujvári 2010). The variation of this character is rarely recognized or interpreted.</p> <p>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 Zv1. This should certainly be confirmed by observing other specimens collected in the type locality.</p> </div>	https://treatment.plazi.org/id/0385E80C4963C021FE35FDC6FF7929DD	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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.text	0385E80C496EC026FE3AFB2CFBC62EFB.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon annularis Ujvári 2013	<div><p>Amerozercon annularis sp. nov.</p> <p>(Figures 2G, H and 5A, B)</p> <p>Material examined (Figure 3)</p> <p>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: CNCAZ0482; coll. number of paratype: CNCAZ0484).</p> <p>Diagnosis</p> <p>Anterior margin of ventrianal shield with two pairs of setae (setae Zv1 present). Central podonotal setae, s1, r1, J1, Z1 and S2 short and smooth, other dorsal setae distinctly pilose. Third pair of opisthonotal pores (Po3) 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.</p> <p>Description – female</p> <p>Length of idiosoma: 333–344 µm (339 µm); width: 274 µm (n = 2).</p> <p>Dorsal side (Figure 5A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z3, s2, r2, s3, r4, r5, s6) and j1–2 feathered and generally slightly longer than other podonotal setae, which are smooth and needlelike. Glands gds1 (po1) situated anteromedially to s1; gdj4 (po2) situated medially to z4; gds4 (po3) on line connecting s4 and s5, 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.</p> <p>Opisthonotum with 21–22 pairs of setae, J1–5, Z1–5, S1–5, 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, J1 smooth and needlelike, J2–5 pointed and pilose. Setae J1–5 constitute parallel rows, setae J5 inserted</p> <p>bases in Amerozercon annularis sp. nov. anteriorly to central dorsal cavities and not reaching their margins. Setae Z1 and S2 short, smooth and needle-like. Setae S2 situated on line connecting Z1 and S1, somewhat nearer to Z1. Setae Z2–4 and S3–4 short, pointed, pilose, none of them expanding beyond the margin of opisthonotum. Setae Z5 and S5 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 gdz6 (Po1) situated anteromedially to insertions of S2; gdZ2 (Po2) on line connecting Z1 and Z2, near Z2; third pair of opisthonotal pores (Po3) absent; gdS5 (Po4) anteromedially to S5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J2-Z2-S3) 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.</p> <p>F, female.</p> <p>Ventral side (Figure 5B). 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 st2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv2 with one or two openings. Ventrianal chaetotaxy complete, setae Zv1 present. Postanal seta, preanal and adanal setae short, smooth and needle-like. Setae Jv5 similar in appearance to marginal setae of opisthonotum, feathered. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv4.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1 elongate, needle-like. Setae h2–3 shorter than h1, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively slender, fixed digit with</p> <p>six teeth, movable digit with four or five teeth. Epistome (Figure 2G, H) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>Male and immature stages</p> <p>Unknown.</p> <p>Etymology</p> <p>The name of the new species refers to the ring-shaped lateral dorsal cavities (the Latin epithet “ annularis ” means annular, ringed).</p> <p>Remarks</p> <p>The new species corresponds in many important diagnostic characteristics (e.g. shape of peritrematal setae, number of R-setae, presence of gland openings gv2, situation of gv3 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 (Po3) 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.</p> <p>The weakly developed central dorsal cavities without marginal sclerotization and the large, ring-shaped lateral dorsal cavities are unique features within the genus.</p></div> 	https://treatment.plazi.org/id/0385E80C496EC026FE3AFB2CFBC62EFB	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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.text	0385E80C4969C03BFDFEFC0DFC5A2F8A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon auricularis Ujvári 2013	<div><p>Amerozercon auricularis sp. nov.</p> <p>(Figures 2I and 6A, B)</p> <p>Material examined (Figure 3)</p> <p>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: CNCAZ0603).</p> <p>Diagnosis</p> <p>Anterior margin of ventrianal shield with two pairs of setae (setae Zv1 present). Central podonotal setae, s1, r1, J-setae, Z1–2, S2 and R2–7 short and smooth, other dorsal setae feathered. Third pair of opisthonotal pores (Po3) 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.</p> <p>Description – female</p> <p>Length of idiosoma: 328 µm; width: 231 µm (n = 1). Dorsal side (Figure 6A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z3, s2, r2, s3, r4, r5, s6) and j1–2 feathered, other podonotal setae smooth and needle-like. Setae j2, z2, s3, r5 and s6 markedly longer than central setae. Glands gds1 (po1) situated anteromedially to s1; gdj4 (po2) situated anteromedially to z4; gds4 (po3) on line connecting s4 and s5, near s4. Whole surface of podonotum covered by tiles possessing undulate posterior margins.</p> <p>Opisthonotum with 22 pairs of setae, J1–5, Z1–5, S1–5, R1–7. 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 J1–4 constitute parallel rows, setae J5 inserted somewhat lateral to these rows, near the anterolateral margin of central dorsal cavities. Setae Z1–2 and S2 short, smooth and needle-like. Setae S2 situated slightly below the line connecting Z1 and S1, somewhat nearer to Z1. Setae Z3–5 and S3–5 elongate, feathered, Z4 and S3–5 expanding beyond the margin of opisthonotum. Among marginal setae S1 approximately as long as S2, but feathered, R1 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 gdz6 (Po1) situated anterolaterally to insertions of Z1; gdZ2 (Po2) laterally to Z2; third pair of opisthonotal pores (Po3) absent; gdS5 (Po4) on line connecting S5 and Jv5, near Jv5.</p> <p>bases in Amerozercon auricularis sp. nov.</p> <p>F, female.</p> <p>Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J3-Z3-S3) 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.</p> <p>Ventral side (Figure 6B). 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 st2, with concave posterior margin and reticulate ornamentation. Adgenital glands gv2 with two openings on the right side and with three openings on the left side of the single specimen. Ventrianal chaetotaxy complete, setae Zv1 present. Postanal seta elongate and smooth, preanal and adanal setae short, smooth and needle-like. Setae Jv5 elongate, feathered. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv4.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1 elongate, needle-like. Setae h2–3 shorter than h1, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively slender, fixed digit with six teeth, movable digit with four or five teeth. Epistome (Figure 2I) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>Male and immature stages</p> <p>Unknown.</p> <p>Etymology</p> <p>The name of the new species refers to the auricle-shaped central dorsal cavities (the Latin epithet “ auricularis ” means auricular).</p> <p>Remarks</p> <p>The new species corresponds in many diagnostic characteristics (e.g. shape of peritrematal setae, number of R-setae, presence of gland openings gv2, situation of gv3) 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 (Po3) 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.</p> <p>The short, smooth J- and R-setae, the elongate, feathered S3–5 and Z3–5 setae and the auricle-shaped central cavities are unique characters within the genus.</p></div> 	https://treatment.plazi.org/id/0385E80C4969C03BFDFEFC0DFC5A2F8A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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.text	0385E80C4974C03EFE44FCDBFE192E4D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon halaskovae Ujvári 2013	<div><p>Amerozercon halaskovae sp. nov.</p> <p>(Figures 2J–L, 7A–D, 8A)</p> <p>Material examined (Figure 3)</p> <p>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: CNCAZ0791 – CNCAZ0793).</p> <p>Diagnosis</p> <p>Anterior margin of ventrianal shield with two pairs of setae (setae Zv1 present) in females, Zv1 absent in males. Dorsal setae short and distinctly pilose, with the exception of s1 and r1 which smooth and needle-like. Third pair of opisthonotal pores (Po3) situated anteromedially to Z4. Glands gdS5 (Po4) situated posteriorly to S5. 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 J2-Z2-S3 with alveolar pits.</p> <p>Description – female</p> <p>Length of idiosoma: 312–317 µm (313 µm); width: 237–248 µm (241 µm) (n = 7). Dorsal side (Figure 7A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Marginal setae of podonotum (z3, s2, r2, s3, r4, r5, s6) and j1 densely pilose and somewhat longer than central setae. Among central podonotal setae s1 short, smooth and needle-like, j5 and z5 finely pilose, others densely pilose. Glands gds1 (po1) not visible; gdj4 (po2) situated medially to z4; gds4 (po3) laterally to line connecting s4 and s5, near s4. 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.</p> <p>Opisthonotum with 21–22 pairs of setae, J1–5, Z1–5, S1–5, 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 J2-J2 and J5-J5 larger than that between other setae of the series. Setae J5 situated on the level of dorsal cavities. Setae S2 situated on line connecting Z1 and S1, somewhat nearer to Z1. In contrast to S5, setae S3–4 not reaching beyond margin of the shield. Setae S5 and Z5 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 gdz6 (Po1) situated anteromedially to insertions of S2; gdZ2 (Po2) on or laterally to line connecting Z1 and Z2, near Z2; third pair of opisthonotal pores (Po3) situated anteromedially to Z4; gdS5 (Po4) posteriorly to S5. Marginal serration shallow and obtuse. Anterior surface of opisthonotum (to level of setae J2-Z2-S3) 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.</p> <p>Ventral side (Figure 7B). Shape of peritrematal shields and peritrematal setae typical for the genus. Peritremes slightly bent, with a small dilatation near the stigma (Figure 2V). Peritrematal shields covered by some longitudinal lines. Sternal shield well sclerotized, 57 µm long and 38 µm wide at the level of setae st2, with nearly straight posterior margin and reticulate ornamentation. Adgenital glands gv2 with two openings. Ventrianal chaetotaxy complete, setae Zv1 present. Postanal seta short and finely pilose, preanal and adanal setae short, smooth and needle-like. Setae Jv5 similar to marginal setae of opisthonotum, densely plumose. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of adanal setae and Jv4.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1 elongate, needle-like. Setae h2–3 shorter than h1, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively slender, fixed digit with six teeth, movable digit with four or five teeth. Epistome (Figure 2J) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>F, female; M, male; DN, deutonymph.</p> <p>Description – male</p> <p>Length of idiosoma: 247–269 µm (258 µm); width: 194–204 µm (199 µm) (n = 3).</p> <p>Dorsal side (Figure 7C). Chaetotaxy, adenotaxy and ornamentation of dorsal shields similar to that of female, except setae j5, which are smooth and needle-like. Length of opisthonotal setae and distances between their insertions as in Table 5.</p> <p>Ventral side (Figure 7D). Posterolateral parts of peritrematal shields fused to ventrianal shield on level of setae R1, 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 (st5 absent). Anterior to the genital opening, the shield is covered by reticulate ornamentation, beyond the level of setae st4 irregular ditches can be observed on its surface. Adgenital glands gv2 with two openings. In contrast to females, the ventrianal chaetotaxy incomplete, setae Zv1 absent. Other ventrianal characters similar to those of female.</p> <p>Gnathosoma</p> <p>Each character similar to that of female, but terminal part of fixed digit of chelicerae bifurcate.</p> <p>Description – deutonymph</p> <p>Length of idiosoma: 268–274 µm (270 µm); width: 199–204 µm (202 µm) (n = 5).</p> <p>Dorsal side (Figure 8A). Position of dorsal setae similar to that of adults, however differences in shape and length of setae are more expressed. On podonotum, setae s1, z5–6 and j6 significantly shorter than other podonotal setae. Setae j5 smooth and needle-like, s1, z5–6 and j6 finely pilose, other podonotal setae distinctly elongate and densely pilose. Opisthonotal setae J1–5 and Z1–2 short, pointed and pilose. J-setae constitute parallel rows, their length decreasing posteriorly. J5 situated on level of dorsal cavities. Setae Z3–4 and S1–2 approximately twice as long as Z1–2. Setae Z5 and S3–5 elongate and possessing longer pili than other setae of the shield, S3–5 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 J1-Z1. The central pair of dorsal cavities larger than the lateral pair, both pairs with approximately parallel axes and undulate anterior margins.</p> <p>Gnathosoma</p> <p>Each character similar to that of female. It is interesting to remark that deutonymphal epistome of each Zerconidae species studied has shown similar morphology, with four conspicuous, prolonged anterior processes; however, deutonymphs of A. halaskovae sp. nov. possess characteristic, Zercon - type epistome (Figure 2K, L), similar to adults.</p> <p>Protonymph and larva</p> <p>Unknown.</p> <p>Etymology</p> <p>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.</p> <p>Remarks</p> <p>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 Z1–2 (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 2W –AB) than in A. suspiciosus (Figure 2P–U)], the presence of the third pair of opisthonotal pores (Po3) and a pair of strongly sclerotized, arcuate ledges behind central dorsal cavities in A. halaskovae sp. nov. and furthermore in the position of glands gdS5 (Po4) (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 Zv1 (see the description of the species with remarks above).</p> </div>	https://treatment.plazi.org/id/0385E80C4974C03EFE44FCDBFE192E4D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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.text	0385E80C4971C032FE02FC9BFB0D28E8.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Amerozercon penicillatus Ujvári 2013	<div><p>Amerozercon penicillatus sp. nov.</p> <p>(Figures 2M, N, 8B, 9A, B)</p> <p>Material examined (Figure 3)</p> <p>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.</p> <p>Diagnosis of male</p> <p>Anterior margin of ventrianal shield with two pairs of setae (setae Zv1 present). Dorsal setae short and plumose, with the exception of j5 and r1 which are smooth and needle-like. Third pair of opisthonotal pores (Po3) absent. Dorsal cavities uniform, with undulate anterior margin. Podonotum anteriorly covered by tile-like pattern, posteriorly bearing distinct pits, opisthonotum with large alveolar pits.</p> <p>Description – male</p> <p>Length of idiosoma: 258–270 µm (265 µm); width: 188–200 µm (192 µm) (n = 3).</p> <p>Dorsal side (Figure 9A). Podonotum with 20 pairs of setae, j1–6, z2–6, s1–6, r2 and r4–5 inserted dorsally, r1 and r3 inserted ventrally, on peritrematal shields (see at ventral side). Podonotal setae short, densely plumose except r1 and j5 which are smooth and needle-like. Marginal setae of podonotum (z3, s2, r2, s3, r4, r5, s6) and j1 somewhat longer than central setae. Glands gds1 (po1) situated anteromedially to s1; gdj4 (po2) situated anteromedially to z4; gds4 (po3) on or somewhat laterally to line connecting s4 and s5, near s4. Anterior surface of podonotum covered by tiles possessing undulate posterior margins, posterior surface of the shield with distinct, alveolar pits.</p> <p>Opisthonotum with 21–23 pairs of setae, J1–5, Z1–5, S1–5, 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 J5 situated on the level of dorsal cavities. Setae S2 shifted near the Z-series, situated laterally to line connecting Z1 and Z2, equidistant between these. Setae S3–5 not reaching beyond margin of the shield. Length of opisthonotal setae and distances between their insertions as in Table 6. Glands gdz6 (Po1) situated anteriorly to insertions of Z1; gdZ2 (Po2) medially to line connecting Z1 and Z2, on the level of S2; third pair of opisthonotal pores (Po3) absent; gdS5 (Po4) medially to S5. Marginal serration shallow and obtuse. Whole opisthonotal shield covered by relatively large, distinct, alveolar pits. Dorsal cavities well-developed, uniform, with undulate anterior margin.</p> <p>Ventral side (Figure 9B). Posterolateral parts of peritrematal shields fused to ventrianal shield on level of setae R1, 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 st4. Adgenital glands gv2 with a single opening. Ventrianal chaetotaxy complete, setae Zv1 present. Postanal seta, preanal and adanal setae short, smooth and needle-like. Setae Jv5 similar to marginal setae of opisthonotum, densely plumose. Anal valves with vestigial euanal setae. Glands gv3 situated anterolaterally to adanal setae. Anterior surface of ventrianal shield covered by squamous pattern to level of Jv3-Zv3-Zv4.</p> <p>M, male; DN, deutonymph.</p> <p>Gnathosoma</p> <p>Situation of hypostomal and subcapitular setae typical for the family. Setae h1 elongate, needle-like. Setae h2–3 shorter than h1, needle-like, h4 longer than previous setae, serrate. Corniculi horn-like, internal malae with a pair of bifurcate anterocentral branches and with serrate margins. Chelicerae relatively slender, fixed digit terminally bifurcate, with six teeth, movable digit with four teeth. Epistome (Figure 2M) typical for the genus Amerozercon, of Zercon - type (see Ujvári 2011b).</p> <p>Description – deutonymph</p> <p>Length of idiosoma: 263 µm; width: 183 µm (n = 1).</p> <p>Dorsal side (Figure 8B). Shape and situation of dorsal setae similar to that of adults, however differences in length of setae are more expressed. On podonotum, setae j1, z3, s3, r5 and s6 significantly longer than other podonotal setae. Opisthonotal setae Z5 and S5 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 J5 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 (Po3) 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.</p> <p>Gnathosoma</p> <p>Each character similar to that of the adults. Similarly to A. halaskovae sp. nov., deutonymphs of A. penicillatus sp. nov. also possess characteristic, Zercon - type epistome (Figure 2N), similarly to adults, which is an unusual phenomenon within Zerconidae.</p> <p>Female, protonymph and larva</p> <p>Unknown.</p> <p>Etymology</p> <p>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).</p> <p>Remarks</p> <p>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 (Po3) 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 r1 (smooth in A. penicillatus sp. nov., barbed in A. barbatus) and the absence of the third pair of opisthonotal pores (Po3) in A. penicillatus sp. nov. The situation of glands gds4 (po3), gdz6 (Po1) and gdZ2 (Po2) 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.</p> <p>Key to the females of known species of Amerozercon</p> <p>1. Dorsal cavities equal..................................................... 2 Dorsal cavities uneaqual................................................. 3</p> <p>2. Podonotal setae j2–4, s1, z2 and z5 smooth, central surface of opisthonotum covered by small pits, dorsal cavities shallow, weakly developed.................................................... Amerozercon brevicavus Ujvári, 2011 Podonotal setae j2–4, s1, z2 and z5 plumose, central surface of opisthonotum covered by medium-sized pits, dorsal cavities well-developed........................................................ Amerozercon barbatus Ujvári, 2011</p> <p>3. Lateral pair of dorsal cavities larger than the central pair.................. 4 Central pair of dorsal cavities larger than the lateral pair.................. 5</p> <p>4. Lateral dorsal cavities ring-shaped, central cavities weakly developed, setae J2–3, Z3–5 and S2–5 relatively short, R-setae feathered................................................................. Amerozercon annularis sp. nov. Each dorsal cavities C-shaped, setae J2–3, Z3–5 and S2–5 elongate, R-setae pointed and barbed................... Amerozercon minimus (Sellnick, 1958)</p> <p>5. Setae J2–5 smooth, Z3–5 and S3–5 elongate, central dorsal cavities five times larger than lateral cavities.................. Amerozercon auricularis sp. nov. Setae J2–5 pilose, Z3–5 and S3–5 short, central dorsal cavities two to three times larger than lateral cavities.......................................... 6</p> <p>6. Third pair of opisthonotal pores (Po3) present, setae Z1–2 pilose, pilose dorsal setae bearing long pili, a pair of strongly sclerotized, arcuate ledges present behind central dorsal cavities............... Amerozercon halaskovae sp. nov. Third pair of opisthonotal pores (Po3) absent, setae Z1–2 smooth, pilose dorsal setae bearing short pili, no arcuate ledges can be observed behind central dorsal cavities.................... Amerozercon suspiciosus Halašková, 1969</p> <p>Key to the males of known species of Amerozercon</p> <p>1. Dorsal cavities equal..................................................... 2 Dorsal cavities uneaqual................................................. 4</p> <p>2. Podonotal setae j2–4, s1, z2 and z5 smooth, central surface of opisthonotum covered by small pits................... Amerozercon brevicavus Ujvári, 2011 Podonotal setae j2–4, s1, z2 and z5 plumose, central surface of opisthonotum covered by medium-sized pits............................................ 3</p> <p>3. Third pair of opisthonotal pores (Po3) present, length of J-setae 17–21 µm, setae r1 pilose........................... Amerozercon barbatus Ujvári, 2011 Third pair of opisthonotal pores (Po3) absent, length of J-setae 11–13 µm, setae r1 smooth........................... Amerozercon penicillatus sp. nov.</p> <p>4. Third pair of opisthonotal pores (Po3) present, setae Z1–2 pilose, pilose dorsal setae bearing long pili, a pair of strongly sclerotized, arcuate ledges present behind central dorsal cavities............... Amerozercon halaskovae sp. nov. Third pair of opisthonotal pores (Po3) absent, setae Z1–2 smooth, pilose dorsal setae bearing short pili, no arcuate ledges can be observed behind central dorsal cavities.................... Amerozercon suspiciosus Halašková, 1969</p></div> 	https://treatment.plazi.org/id/0385E80C4971C032FE02FC9BFB0D28E8	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Ujvári, Zsolt	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
