Dasiosoma quadraticolle
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Ordo: Coleoptera
Familia: Carabidae
Genus: Dasiosoma
Name
Dasiosoma quadraticolle Shi & Liang sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
Holotype (IZAS): male, body length = 6.3 mm, board mounted, genitalia dissected and deposited in microvial pinned under specimen, “China, Yunnan Prov. / Menglun, Botanical / Garden vegetation / N21.91015, E101.28118”; “633m, 2009.11.14 D / TANG Guo Coll. / Institute of Zoology / 西双版纳勐仑植物园”; “HOLOTYPE ♂/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label][Figs 61, 90, 108]. Paratypes (22 males, 18 females): Yunnan: 1 male (IZAS), “China, Yunnan Prov. / Menglun, Botanical / Garden vegetation / N21.91015, E101.28118”; “633m, 2009.11.14 D / TANG Guo Coll. / Institute of Zoology / 西双版纳勐仑植物园”; “PARATYPE ♂/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label]. 2 females, “云南省西双版纳 / 勐仑镇绿石林公园 / 630m 2006.V.5 / 杨秀帅 采” [Yunnan Prov., Xishuangbanna, Menglun, Lvshilin Park, 630m, 2006.V.5, YANG Xiushuai leg.][Figs 24, 123, 138]; “PARATYPE ♀/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”[red label]. 1 female (IZAS), “云南西双版纳勐仑 / 600米 / 中国科学院” [Yunnna, Xishuangbanna, Menglun, 600m, Chinese Academy of Science]; “1994.IV.24 / 雨林 / 采集者：徐环李” [1994.IV.24, Rain forest / leg. By XU Huanli]; “PARATYPE ♀/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label]. 3 males, 5 females (IZAS), “CHINA, Yunnan Prov., / Xishuangbanna, Menglun, / Botanical Garden; canopy / fogging; 2007.VIII.10; / ZHENG Guo leg.”; “PARATYPE ♂ (or ♀)/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label]. 1 male (IZAS), “Yunnan, Xishuangbanna, / Mengla, Bubeng village; / N21.60599, E101.57072 / 706m, 2012.IV.17, / REN Li leg.”; “PARATYPE ♂ / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2012” [red label]. 3 males, 1 female (IZAS) [preserved in 100% alcohol], “2009.7.1 版纳 / 雨林谷560m/ 唐果，姚志远” [2009.VII.01, Yunnan, Xishuangbanna, Yulingu, 560m, Tang G., Yao Z. Y. leg.]; “Dasiosoma / quadraticolle / sp.n. 3♂, 1♀ / Det. Shi H.L. 2012”; “paratype” [red label]. 3 males, 2 females (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun Botany / Garden; valley rain forest; / 2009.XII.1; 560m; / Tang G. & Yao Z. Y. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. 2 females (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun G213 / arboreal forest; / 2009.XI.24; 590m; / Tang G. & Yao Z. Y. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. 1 male, 2 females (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun Botany / Garden; / 2009.XII.1; 560m; / Tang G. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. 1 male (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun G213 / bamboo forest; / 2009.XI.21; 620m; / Tang G. & Yao Z. Y. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. 3 males, 1 female (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun Botany / Garden, Lyushilin; / 2009.XI.16; 652m; / Tang G. & Yao Z. Y. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. 5 males, 1 female (IZAS), “CHINA: Yunnan, Xishuan- / gbanna, Menglun Botany / Garden, Lyushilin; / 2009.XI.17; 643m; / Tang G. & Yao Z. Y. leg.”; [the same collecting data but in Chinese]; “PARATYPE / Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011”. Laos: 1 male (NHML), “LAOS / Muong Sai / le. 19.III.1918 / R. Vitalis de Salvaza”; “Bought from / Vitalis de / Salvaza 1928”; “H. E. Andrewes Coll. / B. M. 1945–97.”; “PARATYPE ♂/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label]. 1 female (NHML), “Luang Prabang, / Muong Sai. / 19..III.1918 / R. V. de Salvaza”; “? genus near / Holcoderus”; “Brit. Mus. / 1921–89”; “PARATYPE ♀/ Dasiosoma quadraticolle / new species / Des. SHI H. L. 2011” [red label].
Diagnosis
Elytra piceous, sometimes disc with an indistinct brownish patch, head and pronotum slightly paler than elytra; pronotum quadrate, lateral margins nearly straight, slightly sinuate before hind angles; basal foveae of pronotum distinctly curved anteromedially, disc without elongate depressions; vertex slightly tumid; tempora gradually narrowed behind eyes; body slightly stout, ratio EL/EW 1.45; aedeagus with median lobe moderately expanded at base, apical lamella narrow.
The dark elytral color, slightly tumid vertex, and pronotal basal foveae distinguish this new species from all other Oriental species of this genus. The new species resembles Dasiosoma hirsutum (Bates), but can be distinguished from the latter in having: (1) pronotum nearly quadrate, lateral margins barely expanded, only slightly sinuate before hind angles, hind angles subrectangular, not so sharp or projected; but in Dasiosoma hirsutum pronotal lateral margins more expanded, distinctly sinuate before hind angles, hind angles slightly acute, sharp and projected; (2) elytral striae shallower, with finer punctures, intervals slightly convex; but in Dasiosoma hirsutum elytral striae deep, forming distinct grooves, with punctures slightly coarser, intervals more convex; (3) dorsal side nearly piceous, but reddish brown in Dasiosoma hirsutum; (4) spermatheca with strong ring-sculpture near apex, spermathecal gland inserted at apical two-fifths of spermatheca, but Dasiosoma hirsutum with spermatheca apical part only with very faint ring-sculpture, spermathecal gland inserted at basal two-fifths of spermatheca; (5) apical segment of ovipositor with inner margin strongly angulate, but only weakly angulate in Dasiosoma hirsutum.
Description
Body length 6.1–7.8 mm, males usually smaller; head and pronotum brown to dark brown, posterior area of vertex and lateral explanate areas of pronotum paler; elytra piceous, usually with a large brownish patch in middle, outline of patch indistinct; antennae uniform reddish brown; mouthparts reddish brown, palpi dark colored, apical half of terminal palpomeres yellow; legs reddish brown to dark brown; ventral side reddish yellow to reddish brown. Dorsal side evenly and densely pubescent, pubescence yellowish; microsculpture indistinct. Head with vertex slightly tumid; tempora slightly longer than half length of eyes, gradually narrowed behind eyes; labrum slightly widened to apex, apical margin nearly straight. Pronotum slightly wider than head, subquadrate, ratio PW/PL 1.30–1.45; pronotal base briefly but distinctly lobed; front angles wide; lateral margins barely expanded in middle, subparallel, so widest point of pronotum not obvious; lateral margins slightly sinuate before hind angles; hind angles subrectangular, not projected; disc slightly convex; lateral explanate areas slightly widened; basal foveae deep and short, groove-like, strongly curved anteromedially; disc sometimes with very faint elongate depressions; median line deep, nearly reaching apical and basal margins; disc not rugose. Elytra muchwider than pronotum, slightly widened to apex, ratio EL/EW 1.45; lateral margins slightly depressed at basal one-third, discal depressions indistinct; striae shallow, not forming distinct grooves, with fine punctures; intervals slightly convex, densely pubescent, primary setigerous pores indistinct; umbilical series of 9th interval indistinct. Male genitalia with median lobe of aedeagus strongly bent, ventral and dorsal margins nearly straight before apex in lateral view; strongly bent to right side in dorsal view; apical lamella narrow, triangular, slightly longer than basal width, apex rounded; base of median lobe moderately bent and expanded, basal orifice about 45° relative to preapical shaft. Internal sac with main flagellum long and slender, slightly sinuous, curved to right side; trumpet-form expansion small, slightly elongate, not bent ventrally; secondary flagellum and apical bursa present; membrane adjacent to trumpet-form expansion finely scaled (Fig. 90). Female genitalia. Spermatheca straight, slightly claviform, moderately long; apical fourth slightly widened, with distinct ring-sculpture; spermathecal gland inserted at apical two-fifths of spermatheca, not branched, fine, much shorter than spermatheca (Fig. 138). Apical segment of ovipositor short, subtriangular, outer margin nearly straight, inner margin strongly angulate in middle; length two times basal width; inner margin setose in apical part behind angulation, outer margin in apical two-thirds; apex sharp, with membranous extension narrow (Fig. 123).
Distribution
(Map 7). China (Yunnan), Laos.
Etymology
The name “quadraticolle” is from the Latin “quadrat-” meaning quadrate and “coll” meaning neck, referring to the pronotum. This species is named for its unique pronotal shape within the genus.
Original Description
- Shi, H; Zhou, H; Liang, H; 2013: Taxonomic synopsis of the subtribe Physoderina (Coleoptera, Carabidae, Lebiini), with species revisions of eight genera ZooKeys, 284: 1-129. doi
Images
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![Figures 61–66. Type materials, scale bars = 2.0 mm: 61 Holotype of Dasiosoma quadraticolle sp. n. 62 Lectotype of Endynomena lewisii Bates [= Orionella lewisii (Bates)] 63 Holotype of Orionella obenbergi Jedlička [= Orionella lewisii (Bates)] 64 Holotype of Endynomena discoidalis Bates [= Orionella discoidalis (Bates)] 65 Lectotype of Plochionus pradieri Fairmaire [= Endynomena pradieri (Fairmaire)] 66 Lectotype of Saronychium inconspicuum Blackburn [= Endynomena pradieri (Fairmaire)].](/wiki/File:ZooKeys-284-001-g011.jpg)
