taxonID	type	description	language	source
038B5908FFAB8C4112D74CCD57EA2A3E.taxon	materials_examined	Type species: Eustigmaeus kermesinus (Koch, 1841)	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFAB8C4312D74F6057652E04.taxon	description	Female (n = 3): Length of idiosoma 292 (321 – 330); gnathosoma 102 (103 – 110); width of idiosoma 231 (253 – 268). Length of legs I – IV: 237 (241 – 245); 195 (196 – 197); 187 (183 – 192); 225 (225 – 238). Dorsum of idiosoma (Figs. 1, 19). Covered by two shields, leaving exposed margin of unsclerotized cuticle around edges; shields ornamented with polygonal depressions, without vacuoles but with fine punctations (Figs. 2, 19); without callosities between idiosomal shield and humeral shield. Prodorsal shield triangular and bearing four pairs of setae (vi, ve, sci and sce) and one pair of eyes between setae ve and sci. Humeral shields subtriangular, ornamented with depressions and bearing c 2; hysterosomal shield with six pairs of setae (c 1, d 1, d 2, e 1, e 2 and f 1); dorsal body setae (Figs. 3, 22) inserted on protuberances, subequal, smooth and clavate with hyaline sheaths, except h 1 and h 2 setiform and distinctly shorter. Lengths of dorsal setae: vi 63 (53 – 58); ve 70 (70 – 73); sci 60 (53 – 58); sce 62 (58 – 63); c 1 62 (54 – 58); c 2 33 (30 – 34); d 1 67 (65 – 66); d 2 69 (60 – 64); e 1 72 (68 – 70); e 2 62 (53 – 62); f 1 54 (47 – 52); h 1 22 (20 – 22); h 2 15 (11 – 14). Distances between dorsal setae: vi – vi 18 (17 – 18); ve – ve 65 (65 – 67); vi – ve 50 (53 – 55); ve – sci 30 (26 – 28); sci – sci 110 (106 – 109); sce – sce 145 (142 – 150); sci – sce 26 (22 – 25); c 1 – c 1 78 (72 – 75); c 1 – d 1 50 (51 – 55); c 1 – c 2 76 (85 – 96); c 1 – d 2 33 (30 – 36); c 2 – c 2 218 (244 – 247); d 1 – d 1 74 (72 – 77); d 1 – d 2 48 (52 – 53); d 1 – e 1 58 (63 – 65); d 1 – e 2 34 (32 – 33); d 2 – d 2 140 (136 – 141); d 2 – e 2 60 (62 – 63); e 1 – e 1 68 (65 – 70); e 1 – e 2 40 (40 – 47); e 2 – e 2 115 (114 – 118); e 1 – f 1 43 (45 – 50); f 1 – f 1 67 (58 – 60); h 1 – h 1 33 (40 – 42); h 2 – h 2 42 (47 – 50); h 1 – h 2 8 (8). Venter of idiosoma (Fig. 4). Endopodal plates separated medially, reticulate and punctate, bearing three pairs of setae (1 a, 3 a and 4 a). Anogenital area reticulate, but anal valves smooth; with three pairs of aggenital (ag 1 – 3) and three pairs of pseudanal (ps 1 – 3) setae. Suranal shield situated ventrally, pressed against anogenital shield, with depressions and punctate, bearing h 1 and h 2, adjacent to posterior horseshoe-shaped shield ornamented by tiny depressions (Fig. 5). Measurements of setae: 1 a 20 (17 – 18); 3 a 22 (19 – 20); 4 a 23 (20 – 21); ag 1 11 (11 – 12); ag 2 17 (14 – 17); ag 3 12 (13 – 14); ps 1 12 (11 – 12); ps 2 11 (9 – 10); ps 3 9 (7 – 9). Gnathosoma. Subcapitulum (Fig. 6) reticulate with fine punctations, bearing subcapitular setae m 16 (15 – 16) and n 17 (15 – 16) and adoral setae or 1 10 (11) and or 2 12 (11 – 12). Distance m – m 20 (18 – 19) and n – n 28 (28 – 30). Palpus 62 (64 – 68) long (Fig. 6), five segmented; palptrochanter without setae; palpfemur with three setae; palpgenu with two setae; palptibia with two tactile setae + one well-developed claw + one spine-like accessory claw; palptarsus with four tactile setae + one solenidion (ω), one subapical eupathidium and one distal trifid eupathidium. Legs (Figs. 7 – 10). Setation: coxae (excluding 1 a, 3 a and 4 a) 2 - 2 - 2 - 2, trochanters 1 - 1 - 1 - 1, femora 6 - 5 - 3 - 2, genua 3 (+ 1 κ) - 3 (+ 1 κ) - 1 - 1, tibiae 5 (+ 1 φ + 1 φρ) - 5 (+ 1 φ) - 5 (+ 1 φ) - 5 (+ 1 φ), tarsi 13 (+ 1 ω) - 9 (+ 1 ω) - 7 (+ 1 ω) - 7. Length of solenidia: ωI 19 (18 – 19); ωII 22 (20 – 23); ωIII 8 (8 – 9); φI 9 (11 – 12); φρI 24 (19 – 22); φII 18 (18 – 20); φIII 17 (16 – 19). φIV 23 (21 – 22). Immature stages and male: Unknown.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFAB8C4312D74F6057652E04.taxon	discussion	Remarks. The new species is distinguished from all other Eustigmaeus species by having the extra horseshoeshaped shield adjacent to the suranal shield. It resembles Eustigmaeus collarti (Cooreman, 1955) and E. distinctus (Wood, 1966) in having dorsal ornamentations, endopodal shields separated, and the same femora and genua chaetotaxy; however, it can be distinguished by 1) lacking the solenidion on tarsus IV (7 + 1 ω in other species), 2) one seta on trochanter III (two in other species), 3) three pairs of aggenital setae (two pairs in other species), 4) endopodal shield reticulate (smooth in other species). Furthermore, the new species differs in the shape of dorsal setae from E. collarti. Also, E. piracicabensis sp. nov. resembles E. reticulatellus (Habbeb, 1961) in having three pairs of aggenital setae, separate and reticulate endopodal shields, and the chaetotaxy of the femora, genua and tarsi; but it differs from the latter by having one seta on trochanter III instead of two, anogenital area reticulate instead of smooth, and setae h 1 and h 2 simple instead of clavate with hyaline tips.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFAB8C4312D74F6057652E04.taxon	etymology	Etymology. The epithet piracicabensis refers to “ from Piracicaba ”, the type locality of the new species.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFAB8C4312D74F6057652E04.taxon	materials_examined	Type material. Holotype female and two paratype females from soil and humus under rubber trees (Hevea brasiliensis Müell. Arg.), collected on March 28, 1999 at Piracicaba, state of São Paulo, Brazil by J. L. Mineiro. All types deposited at the mite reference collection of Departamento de Entomologia e Acarologia, ESALQ-USP, Piracicaba, São Paulo State, Brazil.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFA98C4612D74B6C519C2AD0.taxon	description	Female (n = 4): Length of idiosoma 257 (252 – 275); length of gnathosoma with palp 112 (110 – 117); width of idiosoma 211 (207 – 224). Length of legs I – IV (from base of coxa to tip of tarsal claw): 173 (168 – 175); 161 (150 – 162); 160 (150 – 154); 176 (172 – 180). Dorsum of idiosoma (Figs. 11, 20). Almost completely covered by two shields. Shields ornamented with polygonal depressions of variable sizes and fine punctation; without callosities between idiosomal shield and humeral shield. Prodorsal shield bearing four pairs of setae (vi, ve, sci and sce) and one pair of eyes between setae ve and sci. Humeral shield broad, subtriangular, ornamented with depressions and bearing c 2. Hysterosomal shield with six pairs of setae (c 1, d 1, d 2, e 1, e 2 and f 1). Dorsal body setae situated on protuberances, subequal, smooth, arcuate, feather-like and with midrib, vi and sci with short spikes (Fig. 12, 20). Lengths of dorsal setae: vi 53 (52 – 54); ve 70 (67 – 68); sci 51 (48 – 53); sce 53 (52 – 55); c 1 55 (52 – 58); c 2 52 (54 – 56); d 1 68 (62 – 65); d 2 62 (57 – 59); e 1 60 (60 – 62); e 2 54 (55 – 56); f 1 52 (56 – 59); h 1 30 (35 – 37); h 2 28 (29 – 30). Distances between dorsal setae: vi – vi 12 (8 – 12); ve – ve 74 (65 – 75); vi – ve 29 (24 – 27); ve – sci 25 (22 – 23); sci – sci 115 (103 – 112); sce – sce 154 (145 – 156); sci – sce 35 (38 – 40); c 1 – c 1 62 (58 – 62); c 1 – d 1 38 (39 – 40); c 1 – c 2 70 (56 – 87); c 1 – d 2 60 (58 – 62); c 2 – c 2 177 (173 – 197); d 1 – d 1 58 (56 – 58); d 1 – d 2 58 (60 – 61); d 1 – e 1 67 (62 – 64); d 1 – e 2 58 (52 – 55); d 2 – d 2 178 (167 – 170); d 2 – e 2 62 (58 – 61); e 1 – e 1 81 (70 – 74); e 1 – e 2 35 (33 – 34); e 2 – e 2 136 (122 – 130); e 1 – f 1 32 (29 – 32); f 1 – f 1 60 (56 – 58); h 1 – h 1 30 (26 – 29); h 2 – h 2 65 (55 – 63); h 1 – h 2 18 (17 – 18). Venter of idiosoma (Fig. 13). Endopodal shields fused medially, reticulate and punctate, except for central region of posterior endopodal shield, punctate only; bearing three pairs of setae (1 a, 3 a and 4 a); anogenital area reticulate and punctate, but anal valves smooth; with one pair of aggenital (ag 1) and three pairs of pseudanal (ps 1 – 3) setae. Suranal shield situated ventrally, with depressions and punctate, bearing h 1 and h 2. Measurements of setae: 1 a 16 (15 – 16); 3 a 16 (15 – 17); 4 a 15 (12 – 14); ag 15 (12 – 14); ps 1 12 (13 – 14); ps 2 12 (11 – 12); ps 3 11 (11 – 13). Gnathosoma. Subcapitulum (Fig. 14) with dimples and fine punctations, bearing subcapitular setae m 14 (15 – 16) and n 12 (10 – 11), and adoral setae or 1 11 (11) and or 2 12 (11 – 12). Distance m – m 20 (20), n – n 21 (21). Palpus 77 (67 – 74) long (Fig. 14), palptrochanter without setae; palpfemur with three setae; palpgenu with two setae; palptibia with two tactile setae + one well-developed claw + one spine-like accessory claw; palptarsus with four tactile setae + one solenidion (ω), one subapical eupathidium and one distal trifid eupathidium. Legs (Figs. 15 – 18). Setation: coxae (excluding 1 a, 3 a and 4 a) 2 - 2 - 2 - 2, trochanters 1 - 1 - 2 - 1, femora 6 - 5 - 3 - 2, genua 3 (+ 1 κ) - 3 - 1 - 1, tibiae 5 (+ 1 φ + 1 φρ) - 5 (+ 1 φ) - 5 (+ 1 φ) - 5 (+ 1 φ), tarsi 13 (+ 1 ω) - 9 (+ 1 ω) - 7 (+ 1 ω) - 7. Length of solenidia: ωI 23 (21 – 23); ωII 15 (16 – 17); ωIII 8 (7 – 8); φI 7 (7); φρI 11 (12 – 13); φII 8 (9 – 10); φIII 7 (7). φIV 7 (6 – 7). Immature stages and male: Unknown.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFA98C4612D74B6C519C2AD0.taxon	discussion	Remarks: This new species belongs to the “ segnis ” group, therefore it resembles Eustigmaeus arcuata Chaudhri, 1965, E. chilensis Chaudhri, 1965, E. ensifer Tseng, 1982, E. floridensis Maake, Ueckermann & Childers, 2015, E. foliaceus Tseng, 1982, E. microsegnis Chaudhri, 1965 and E. segnis (Koch, 1836) in having one pair of aggenital setae, flattened dorsal body setae, five setae on femur II and three setae on genu II; it can be distinguished from those species by the following combination of characters: tarsus II with 9 (+ 1 ω) setae [8 (+ 1 ω) setae in E. arcuata, E. chilensis and E. segnis]; endopodal shields reticulate (smooth in E. chilensis, E. floridensis and E. foliaceus); most of the dorsal body setae smooth (barbed in E. arcuata, E. ensifer, E. floridensis, E. microsegnis and E. segnis); dimples of dorsal shields without vacuoles (with vacuoles in E. microsegnis and E. segnis); anogenital area reticulate (smooth in E. ensifer, E. floridensis and E. foliaceus); lacking callosity (present in E. foliaceus). Furthermore, the new species differs from E. chilensis by having vi and sci with barbs.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFA98C4612D74B6C519C2AD0.taxon	etymology	Etymology. The species is named in honor of A. R. Oliveira (Brazilian acarologist, Departamento de Ciencias Biologicas, Universidade de Santa Cruz, Ilheus, Bahia State, Brazil), for his contribution to Acarology in Brazil.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
038B5908FFA98C4612D74B6C519C2AD0.taxon	materials_examined	Type material. Holotype female and three paratype females from soil and humus under unidentified tree, collected on January 17, 2000 at Pariquera-Açu, state of São Paulo State, Brazil, by A. R. Oliveira. The holotype female and two paratype females are deposited at the mite reference collection of Departamento de Entomologia e Acarologia, ESALQ-USP, São Paulo State, Brazil. One paratype female deposited at the Acarological Collection, Department of Plant Protection, Faculty of Agriculture, University of Maragheh, Maragheh, Iran.	en	Paktinat-Saeij, Saeid, Bagheri, Mohammad, De Castro, Tatiane M. M. G., De Moraes, Gilberto J. (2016): Two new species of Eustigmaeus Berlese (Acari: Trombidiformes: Stigmaeidae) from Brazil, with a key to the American species. Zootaxa 4066 (5): 571-580, DOI: 10.11646/zootaxa.4066.5.5
