Research Article |
Corresponding author: Jun Chen ( chenj@ioz.ac.cn ) Academic editor: Vladimir Pesic
© 2021 Lihao Zheng, Jun Chen.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Zheng L, Chen J (2021) Two new species and new records of Otocepheidae (Acari, Oribatida) from Yunnan, Southwest China. ZooKeys 1073: 177-199. https://doi.org/10.3897/zookeys.1073.75583
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This work includes taxonomic data on four species of oribatid mites of the family Otocepheidae from Yunnan, China. Two new species of the genera Basiceramerus and Eurostocepheus are described, respectively. Basiceramerus ovatus sp. nov. differs from B. bangladeshensis Corpuz-Raros & Gruèzo, 2008 by the wavy marginalis passing the base of the adanal setae, prodorsal condyles well separated from median ones, a ventral ridge present, and the anal plate foveolate; it differs from B. igorotus Corpuz-Raros & Gruèzo, 2011 from Vietnam by the wavy marginalis passing the base of the adanal setae, a connected tutorium and lamelliform expansion, a ventral ridge present, a smooth genital plate, and seta an2 located close to the median margin of the anal opening; it differs from B. igorotus from the Philippines by the lamellar setae inserted behind the tip of the lamella, separated prodorsal condyles, lyrifissure im posterior to gla, genital plate smooth, anal plate foveolate, and the wavy marginalis passing the base of the adanal setae. Eurostocepheus (Eurostocepheus) sinutus sp. nov. differs from other known species of this genus by having a ventral groove between the genital aperture and the ventral ridge, eight pairs of notogastral setae, and distinctly shorter and thinner notogastral setae p1, p2, p3, h3. Eurostocepheus (Eurostocepheus) aquilinus Aoki, 1965 and E. (E.) mahunkai Mondal & Kundu, 1999 are reported for the first time from China.
Basiceramerus, China, Eurostocepheus (Eurostocepheus), oribatid mites, taxonomy
During identification of the oribatid mite material collected from Yunnan, Southwest China, we found four otocepheid species; among them two species are new to science belonging to the genera Basiceramerus and Eurostocepheus, and the others, Eurostocepheus (Eurostocepheus) aquilinus Aoki, 1965 and E. (E.) mahunkai Mondal & Kundu, 1999, are new records for China.
Basiceramerus was proposed by Corpuz-Raros with Basiceramerus upelbensis Corpuz-Raros, 1979 as the type species. Currently, the genus comprises six species, which are distributed in the subtropics of Asia: the Philippines, Bangladesh and Vietnam (
Eurostocepheus Aoki, 1965, which is distinguished from other genera of Otocepheidae mainly by its disproportionately dilated pedotectum II and conspicuously developed costula, comprises two subgenera: Eurostocepheus (Eurostocepheus) Aoki, 1965 and Eurostocepheus (Cerostocepheus) Mahunka, 1973. The main subgeneric difference lies in the number of genital setae, either 4 or 5 pairs respectively. Nine species of this genus, all from the Oriental region, were hitherto reported (
In the following study, the two new species Basiceramerus ovatus sp. nov., Eurostocepheus (Eurostocepheus) sinutus sp. nov., are described and illustrated based on adults, and expanded descriptions and illustrations of E. (E.) aquilinus and E. (E.) mahunkai based in part on new information are provided.
Specimens were mounted in lactic acid on temporary cavity slides for measurement and illustration. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral plate. Notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. All body measurements are presented in micrometers. Formulae for leg setation are given in parentheses according to the sequence trochanter-femur-genu-tibia-tarsus (famulus included). Formulae for leg solenidia are given in square brackets according to the sequence genu-tibia-tarsus.
General terminology used in this paper follows that of
Prodorsum: ro, le, in, bs, ex–rostral, lamellar, interlamellar, bothridial and exobothridial setae, respectively; cos–costula; tu–tutorium; spa.l–lamelliform expansion; tbd, tbv–dorsal and ventral bothridial plate, respectively; cpm, cpl–medial and lateral prodorsal condyles, respectively.
Notogaster: c, la, lm, lp, h-row, p-row–notogastral setae; cnm, cnl–medial and lateral notogastral condyles, respectively; vm–vitta marginalis; ia, im, ip–anterior, middle, posterior lyrifissures, respectively; ih, ips–same, associated with setal rows h and p, respectively; gla–opisthonotal gland opening.
Coxisternum and lateral podosoma: 1a, 1b, 1c, 2a, 3a, 3b, 3c, 4a, 4b, 4c–setae of epimeres I–IV; met–mentotectum; st–sternal apodeme; ap1, ap2, ap sj–apodeme I, II, sejugal, respectively; Pd I, Pd II–pedotectum I, II respectively; spd–sub pedotectum; fep–epimeral foramen; dis–discidium; opp–postpodosomal ornamentation.
Anogenital region: g, ag, an, ad–genital, aggenital, anal and adanal setae, respectively; vr–ventral ridge; iag, iad–aggenital, adanal lyrifissure respectively.
Gnathosoma: a, m–anterior, middle seta of gena; h–hypostomal seta of mentum; v, l, d, cm, acm, ul, su, vt, lt, sup, inf–palp setae; ω–palp tarsal solenidion; ep–postpalpal seta; cha, chb–cheliceral setae; cht–tooth on dorsal chelicerae; rbr–rutellar brush; Tg–Trägårdh’s organ.
Legs: σ, φ, ω–solenidia of genu, tibia and tarsus, respectively; ɛ–famulus of tarsus I; d, l, v–dorsal, lateral, ventral setae, respectively; ev, bv–basal trochanteral setae; ft, tc, it, p, u, a, s, pv–tarsal setae; Tr, Fe, Ge, Ti, Ta–trochanter, femur, genu, tibia, tarsus of legs, respectively.
Body size (N = 4): 990–1360 × 540–650. Two pairs of prodorsal condyles present, similar in shape, broadly rounded, median prodorsal condyles close to each other but not fused. Lateral notogastral condyles triangular, with a tiny convex at bottom. One median notogastral condyle, rounded. Ten pairs of notogastral setae. Vitta marginalis distinct. A wavy marginalis, like vitta marginalis, passing the base of adanal setae, ended at level of anterior margin of anal opening.
Measurements. Body length: 1020 (holotype, male), 990–1360 (paratypes, two males and one female), body width: 540 (holotype, male), 540–650 (paratypes, two males and one female). Setae length and mutual distance (holotype, male): ro 120, le 140, bs 130, in 110, ex 20; c, la, lm, lp, h1, h2, h3, p1, p2, p3 range 80–100; c–c 370, la–la 430, lm–lm 470, lp–lp 470.
Integument. Body color light brownish. Surface of notogaster foveolate.
Prodorsum. Rostrum rounded. Rostral setae moderately curved inward, densely barbed outside. Lamellar setae inserted behind tip of lamella, curved inward, roughened outside. Interlamellar setae barbed and setiform, a pair of longitudinal wrinkles extending from its bottom backward to outer margin of median prodorsal condyles. Exobothridial setae short. Bothridial seta with a fusiform head. Tutorium developed, almost touching lamelliform expansion. Lamelliform expansion pointing to bottom of seta ro. Bothridium opening laterally, dorsal bothridial plate nearly straight, ventral bothridial plate broadly rounded in dorsal view. Two pairs of prodorsal condyles present, similar in shape, broadly rounded, median prodorsal condyles close to each other but not fused. Mutual distance between ventral bothridial plates nearly equal with that between lateral prodorsal condyles.
Notogaster. L/W of notogaster about 1.3. Lateral notogastral condyles triangular, with a tiny convex at bottom. One median notogastral condyle present, rounded. Ten pairs of notogastral setae, glabrous, setiform, nearly equal in length. Setae lm and lyrifissures im located nearly same level. All lyrifissures (im, ip, ih, ips, except ia) well visible in dorsal view, ip located between p2 and p3, ips between h3 and p3. Opisthonotal gland openings located anterior and very close to im. Vitta marginalis distinct.
Epimeral and lateral podosomal regions. Apodemes II and sejugal apodeme well developed, apodemes III invisible, epimeral foramen present, pedotectum II with anterior and posterior expansions nearly equal in size. Sternal apodeme well visible. Epimeral setal formula 3-1-3-3. Seta 4a inserted between 4b and 4c, and closer to 4c. Postpodosomal ornamentation well developed.
Anogenital region. Genital plates smooth. Four pairs of genital setae (mutual distances g1–g1≈g2–g2≈g4–g4<g3–g3). Aggenital lyrifissures located close and anterolateral to genital aperture. One pair of aggenital, two pairs of anal (mutual distances an1–an1<an2–an2, seta an1 located close to median margin of anal opening) and three pairs of adanal setae similar in length. Setae ad3–ad3 well below level of anterior margin of anal opening. Anal plate foveolate. Lyrifissures iad located in diagonal position and close to anal aperture, below level of anterior margin of anal opening. A wavy marginalis, like vitta marginalis, passing the base of adanal setae, ending beyond level of anterior margin of anal opening.
Gnathosoma. Subcapitular setae barbed, flagelliform at tips. Rutellum pantelobasic, with typical dentation and rutellar brush. Chelicera chelate-dentate; with a minute denticle proximal to seta cha; cha longer than chb, both of them barbed; Trägårdh’s organ narrowly triangular. Palp with usual setal formula: 0-2-1-3-8 (+ω); setae of trochanter to tibia barbed. Tarsus with four short, blunt distal eupathidia–acm, su, (ul); other tarsal setae smooth or with sparse, inconspicuous barbs; base of solenidion ω constrainted by surface of tarsusand thus adjacent to setae ul’, ul” medioanteriorly. Postpalpal setae erect, smooth.
Legs. Monodactylous. Claw of each leg strong and smooth. Formulae of leg setation and solenidia (Table
Leg setation and solenidia of adult Basiceramerus ovatus sp. nov. Roman letters refer to normal setae, Greek letters to solenidia (except ɛ=famulus). Single prime (’) marks setae on the anterior and double prime (”) setae on the posterior side of a given leg segment. Parentheses refer to a pair of setae. Tr – trochanter, Fe – femur, Ge – genu, Ti – Tibia, Ta – tarsus.
Leg | Tr | Fe | Ge | Ti | Ta |
---|---|---|---|---|---|
Ⅰ | v’ | d, (l), bv” | (l), v’, σ | (l), (v), φ1, φ2 | (ft), (tc), (it), (p), (u), (a), s, (pv), ε, ω1, ω2 |
Ⅱ | v’ | d, (l), bv” | (l), v’, σ | l’, (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2 |
Ⅲ | l’, v’ | d, l’, ev’ | l’, σ | (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv) |
Ⅳ | v’ | d, ev’ | d, l’ | (v), φ | ft”, (tc), (p), (u), (a), s, (pv) |
Holotype : male (in alcohol, ZLH-12-225): China, Yunnan Province, Ruili City, Nongdao Town, Nankaiba Village, 23°54'51.19"N, 97°33'58.69"E, 835 m a. s. l., in soil and debris under bush, 23 October 2012. Paratypes: two females (in alcohol, ZLH-12-225): same data as holotype; one female (in alcohol, ZLH-12-259): China, Yunnan Province, Yingjiang County, Daonong Village, 24°40'2.568"N, 97°35'54.24"E, 924 m a. s. l., in soil and debris under bush, 31 October 2012. All type specimens were collected by Lihao Zheng.
All type specimens are deposited in the collection of the Institute of Zoology, Chinese Academy of Sciences, Beijing (
The specific name “ovatus” is from Latin for “egg” refers to the oval notogaster in dorsal view.
The new species is morphologically similar to B. bangladeshensis Corpuz-Raros & Gruèzo, 2008 from Bangladesh and B. igorotus Corpuz-Raros & Gruèzo, 2011 from the Philippines and Vietnam (
Body size: 1500 × 850. Body ratio (length/width): 1.8. Body surface relatively smooth. Costula strong, a little “S” shaped curved, largest width of mutual distance anteriorly, curved inward around setae le. Pedotecta II disproportionately dilated, with smaller anterior parts and larger posterior parts projecting lateroposteriad. Eight pairs of notogastral setae, c, la, lm, lp setiform and slightly barbed distally, p1, p2, p3, h3 short and ciliform. Epimeral setal formula 3-1-3-3. A pair of ventral grooves between genital aperture and ventral ridge present.
Eurostocepheus (Eurostocepheus) sinutus sp. nov., adult: a dorsal aspect (legs removed) b bothridial seta c epimeron IV (left, part), showing ventral groove (arrow) d ventral aspect (legs and mouthparts removed). Abbreviations and notations explained in text. Scale bars: 200 µm (a, d); 100 µm (b).
Measurements (holotype, female). Body length: 1500, body width: 850. Setae length and mutual distance: ro 230, le 230, bs 150, ex 20; c, la, lm, lp range 210–250; p1, p2, p3, h3 range 40–60; c–c 370, la–la 430, lm–lm 470, lp–lp 470.
Integument. Body color dark brownish. Body surface relatively smooth.
Prodorsum. Rostrum broadly rounded. Rostral setae curved inward, densely barbed outside. Lamellar setae inserted behind tip of costula, curved inward, roughened externally. Interlamellar setae slightly barbed. Bothridial setae with a long fusiform head and a curved peduncle in dorsal view. Exobothridial setae short, hardly visible in dorsal view. Costula strong, weakly “S” shaped, largest width of mutual distance anteriorly, curved inward around setae le. Bothridium opening laterally, dorsal bothridial plate nearly straight, ventral bothridial plate invisible in dorsal view. Tutorium developed weakly. Lamelliform expansion curved and pointing to base of seta ro in lateral view. Two pairs of prodorsal condyles present, lateral prodorsal condyles broadly flattened and wide, median prodorsal condyles drop-shaped.
Epimeral and lateral podosomal regions. Pedotecta II disproportionately dilated, with smaller anterior parts and larger posterior parts projecting lateroposteriad. Epimeral border I well visible. Apodemes I, II and sejugal apodeme well developed, epimeral foramen present. Sternal apodeme well developed. Epimeral setal formula 3-1-3-3. Epimeral setae slightly barbed, seta 4a inserted between 4b and 4c, and closer to 4c. Postpodosomal ornamentation present.
Anogenital region. Genital plates relatively smooth. Four pairs of genital setae (mutual distances g1–g1≈g2–g2≈g4–g4<g3–g3, g2 longer than the rest). Aggenital lyrifissures located close and anterolateral to genital aperture. A pair of ventral groove present between genital aperture and ventral ridge. One pair of aggenital, two pairs of anal (mutual distances an1–an1<an2–an2) and three pairs of adanal setae short, similar in length. Setae ad3–ad3 below level of anterior margin of anal opening. Adanal lyrifissures located in diagonal position and close to anal aperture, below level of anterior margin of anal opening.
Gnathosoma. Subcapitular setae barbed. Rutellum pantelobasic, with typical dentation and rutellar brush. Chelicera chelate-dentate; with a minute denticle proximal to seta cha; cha longer than chb; Trägårdh’s organ narrowly triangular. Palp with usual setal formula: 0-2-1-3-8 (+ω); setae of trochanter to tibia barbed. Tarsus with four short, blunt distal eupathidia–acm, su, (ul); base of solenidion ω constrainted by surface of tarsus, and thus adjacent to setae ul’, ul” medioanteriorly. Postpalpal setae erect, smooth.
Legs. Monodactylous. Claw of each leg strong and smooth. Formulae of leg setation and solenidia (Table
Holotype : female (in alcohol, ZLH-12-276): China, Yunnan Province, Yingjiang County, Taiping Town, Huilonghe Reservoir, 24°40'20"N, 97°45'28"E, 1769 m a. s. l., litter and soil under moss, 24 October 2012, collected by Lihao Zheng.
Type specimen is deposited in the collection of the
The specific name “sinutus” is from Latin for “sinus” refers to the ventral groove between genital aperture and ventral ridge.
As possessing the conspicuously developed costula and the distinctly dilated posterior pedotecta II, which are diagnostic characters of the genus, this new species should be placed into the genus Eurostocepheus. The new species can be easily distinguished from other known species of this genus by its huge body size, eight pairs of notogastral setae and its ventral groove between the genital aperture and the ventral ridge.
Eurostocepheus aquilinus Aoki, 1965: 334–339, figs 142–146; Ermilov, Niedbała and Anichkin 2012: 23.
Body size: 1000 × 510. Body ratio (length/width): 2.0. Costula strong, thin anteriorly, and thick posteriorly. Lamelliform expansion sigmoid and passing between base of setae ro and le in lateral view. Ten pairs of notogastral setae nearly equal in length. Sternal apodeme short and rounded. Epimeral setal formula 3-1-3-2. Epimeral setae slightly barbed, seta 1a, 2a, 3a short and thin, hardly visible.
Measurements (ZLH-20-029, male). Body length: 1000, body width: 510. Setae length and mutual distance: ro 130, le 140, bs 150, in 60, ex 20; notogastral setae range 70–110. Mutual distance: c–c 140, la–la 190, lm–lm 210, lp–lp 310, h2–h2 220, h1–h1 210.
Integument. Body color dark brownish. Body surface covered with foveola.
Prodorsum. Rostrum rounded. Both rostral setae and lamellar setae curved inward, slightly barbed outside. Lamellar setae inserted behind tip of costula. Interlamellar setae slightly barbed. Bothridial setae with a long fusiform head and a curved peduncle. Exobothridial setae short, hard to see in dorsal view. Costula strong, thin anteriorly, and thick posteriorly. Bothridium opening laterally, dorsal bothridial plate nearly straight, ventral bothridial plate invisible in dorsal view. Tutorium fainted. Lamelliform expansion sigmoid and passing between bases of setae ro and le in lateral view. Lateral prodorsal condyles broadly rounded, median prodorsal condyles absent. Mutual distance between ventral bothridial plate nearly equal with that between lateral prodorsal condyles.
Notogaster. L/W of notogaster about 1.3. Lateral notogastral condyles triangular. Median notogastral condyles absent. Ten pairs of notogastral setae nearly equal in length. All lyrifissures well visible, ip located between p2 and p3, ips between h3 and p3. Opisthonotal gland openings located close to lyrifissure im. Vitta marginalis distinct. Lyrifissures im and setae lm located nearly same level.
Epimeral and lateral podosomal regions. Epimere I with distinct, long ridge extend to pedotectum I. Apodemes I, II and sejugal apodeme well developed. Sternal apodeme short and rounded. Epimeral setal formula 3-1-3-2. Epimeral setae slightly barbed, seta 1a, 2a, 3a short and thin, hardly visible.
Anogenital region. Genital plates sculptured irregularly with several strong furrows. Four pairs of genital setae (largest mutual distance is g3–g3). Aggenital lyrifissures located close and anterolateral to genital aperture. One pair of aggenital, two pairs of anal (mutual distances an1–an1<an2–an2) and three pairs of adanal setae similar in length. Setae ad3–ad3 below level of anterior margin of anal opening. Adanal lyrifissures located longitudinally and close to anal aperture, below level of anterior margin of anal opening.
Gnathosoma. Subcapitular setae barbed. Rutellum pantelobasic, with typical dentation and rutellar brush. Chelicera chelate-dentate; with a minute denticle proximal to seta cha; cha longer than chb; Trägårdh’s organ narrowly triangular. Palp with usual setal formula: 0-2-1-3-8 (+ω); setae of trochanter to tibia barbed. Tarsus with four short, blunt distal eupathidia–acm, su, (ul); base solenidion ω constrainted by surface of tarsus, and thus adjacent to setae ul’, ul” medioanteriorly. Postpalpal setae erect, smooth.
Legs. Monodactylous. Claw of each leg strong and smooth. Formulae of leg setation and solenidia (Table
Leg setation and solenidia of adult Eurostocepheus (Eurostocepheus) aquilinus Aoki, 1965.
Leg | Tr | Fe | Ge | Ti | Ta |
---|---|---|---|---|---|
I | v’ | d, (l), bv” | (l), v’, σ | (l), (v), φ1, φ2 | (ft), (tc), (it), (p), (u), (a), s, (pv), ε, ω1, ω2 |
II | v’ | d, (l), bv” | (l), v’, σ | l’, (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2 |
III | v’ | d, l’, ev’ | l’, σ | (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv) |
IV | - | d, ev’ | d, l’ | (v), φ | ft”, (tc), (p), (u), (a), s, (pv) |
One male (in alcohol, ZLH-20-029): China, Yunnan Province, Ruili County, Nongdao Town, Nankaiba, 23°55'49"N, 97°32'7"E, 752 m a. s. l., litter and soil under fern, 25 May 2020, collected by Lihao Zheng.
Specimen is deposited in the collection of the
The specimen checked in this study is almost coincident (shape of lamelliform expansion, different kind of epimeral setae in shape, etc.) with the original description given by Aoki. Here, we provide a supplementary description of this species with new figures and information about morphological characters of this species.
Eurostocepheus (Eurostocepheus) mahunkai Mondal & Kundu, 1999: 180–186, figs 1–16.
Body size: 830 × 420. Body ratio (length/width): 2.0. Mutual distance of costula gradually narrow from base to tip. Two pairs of prodorsal condyles present, lateral prodorsal condyles broadly rounded, with bottom straight, median prodorsal condyles rounded, not conspicuous, well separated from each other. Lateral notogastral condyles trapezoid, with triangular tip outside. Epimeral setal formula 3-1-3-3. Genital plates with longitudinal furrows.
Measurements (holotype, male). Body length: 830, body width: 420. Setae length and mutual distance: ro 120, le 130, bs 100, in 160, ex 10; notogastral setae range 150–190; c–c 170, la–la 220, lm–lm 180, lp–lp 230, h2–h2 240, h1–h1 130.
Integument. Body color light brownish. Body surface densely foveolate (not well visible on notogaster).
Prodorsum. Rostrum broadly rounded. Rostral setae moderately curved inward, densely barbed outside. Lamellar setae inserted behind tip of costula, curved inward, roughened externally. Interlamellar setae slightly barbed. Bothridial setae with a long fusiform head and a strongly curved peduncle. Exobothridial setae short. Mutual distance of costula gradually narrow from base to tip. Bothridium opening laterally, dorsal bothridial plate nearly straight, ventral bothridial plate triangular in dorsal view. Tutorium fainted. Two pairs of prodorsal condyles present, lateral prodorsal condyles broadly rounded, with bottom straight, median prodorsal condyles rounded, not conspicuous, well separated from each other. Mutual distance between ventral bothridial plate nearly equal with that between lateral prodorsal condyles. Subpedotectum well developed.
Epimeral and lateral podosomal regions. Epimere I with distinct, long, transverse ridge. Apodemes I, II and sejugal apodeme well developed, apodeme III short. Sternal apodeme well developed. Epimeral setal formula 3-1-3-3. Seta 4a inserted between 4b and 4c, and closer to 4c. Postpodosomal ornamentation present.
Anogenital region. Genital plates covered with longitudinal furrows. Four pairs of genital setae (mutual distances g1–g1≈g2–g2≈g4–g4<g3–g3). Aggenital lyrifissures located close and anterolateral to genital aperture. One pair of aggenital, two pairs of anal (mutual distances an1–an1≈an2–an2) and three pairs of adanal setae similar in length. Setae ad3–ad3 below level of anterior margin of anal opening. Adanal lyrifissures located in diagonal position and close to anal aperture, below level of anterior margin of anal opening.
Gnathosoma. Subcapitular setae barbed, flagelliform at tips. Rutellum pantelobasic, with typical dentation and rutellar brush. Chelicera chelate-dentate; with a minute denticle proximal to seta cha; cha longer than chb, both of them barbed; Trägårdh’s organ narrowly triangular. Palp with usual setal formula: 0-2-1-3-8 (+ω); setae of trochanter to tibia barbed. Tarsus with four short, blunt distal eupathidia–acm, su, (ul); other tarsal setae smooth or with sparse, inconspicuous barbs; base of solenidion ω constrainted by surface of tarsus, and thus adjacent to setae ul’, ul” medioanteriorly. Postpalpal setae erect, smooth.
Legs. Monodactylous. Claw of each leg strong and smooth. Formulae of leg setation and solenidia (Table
Leg setation and solenidia of adult Eurostocepheus (Eurostocepheus) sinutus sp. nov. and Eurostocepheus (Eurostocepheus) mahunkai Mondal & Kundu, 1999.
Leg | Tr | Fe | Ge | Ti | Ta |
---|---|---|---|---|---|
I | v’ | d, (l), bv” | (l), v’, σ | (l), (v), φ1, φ2 | (ft), (tc), (it), (p), (u), (a), s, (pv), ε, ω1, ω2 |
II | v’ | d, (l), bv” | (l), v’, σ | l’, (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv), ω1, ω2 |
III | v’ | d, l’, ev’ | l’, σ | (v), φ | (ft), (tc), (it), (p), (u), (a), s, (pv) |
IV | v’ | d, ev’ | d, l’ | (v), φ | ft”, (tc), (p), (u), (a), s, (pv) |
One male (in alcohol, ZLH-12-229): China, Yunnan Province, Ruili City, Nongdao Town, 23°59'49.1"N, 97°39'10.79"E, 1150 m a. s. l., primary forest, litter and soil under bamboo, 24 October 2012, collected by Lihao Zheng.
Specimen is deposited in the collection of the
The specimen collected from Yunnan, Southwest China is morphologically coincident (shape of costula, unsmooth genital plates, epimeral setal formula, etc) with E. (E.) mahunkai described and illustrated by
We cordially thank Dr Schatz and Dr Vladimir Pesic (Subject editor of Zookeys) for their thorough review to this manuscript and many valuable comments. This work was supported by the National Natural Science Foundation of China (No. 32070421, 31372155), the National Science & Technology Fundamental Resources Investigation Program of China (Grant No. 2019FY101800), the Second Tibetan Plateau Scientific Expedition and Research (STEP) program (Grant No. 2019QZKK050100101), and the Key Laboratory of Dry-hot Valley Characteristic Bio-Resources Development at university of Sichuan Province (Grant No. GR-2018-C-04).