Dasiosoma quadraticolle Shi & Liang, 2013

Shi, Hongliang, Zhou, Hongzhang & Liang, Hongbin, 2013, Taxonomic synopsis of the subtribe Physoderina (Coleoptera, Carabidae, Lebiini), with species revisions of eight genera, ZooKeys 284, pp. 1-129 : 71-74

Dasiosoma quadraticolle Shi & Liang sp. n. Habitus: Figs 24 61 male genitalia: Figs 90 108 female genitalia: Figs 123 138

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.191 8 / 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 resem bles 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.

Figures

Map 7. Known distribution of Oriental species of genus Dasiosoma: ● Dasiosoma hirsutum (Bates) ★ Dasiosoma maindroni (Tian & Deuve) ▲ Dasiosoma quadraticolle sp. n. ◆ Dasiosoma bellum (Habu) ■ Dasiosoma indicum (Kirschenhofer).

Figure 90. Median lobe of male genitalia, right-lateral, ventral, left-lateral, dorsal views of Dasiosoma quadraticolle sp. n., holotype.

Figures 19 - 24. Habitus, scale bars = 2.0 mm: 19 Allocota aurata (Bates), a specimen from Hainan 20 Allocota aurata (Bates), a specimen from Yunnan 21 Allocota aurata (Bates), a specimen from Yunnan 22 Lachnoderma asperum Bates, a specimen from Taiwan 23 Lachnoderma biguttatum Bates, a specimen from Yunnan 24 Dasiosoma quadraticolle sp. n., a paratype from Yunnan.

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 Jedlicka [= 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)].

Figures 95 - 110. Left and right parameres of male genitalia, scale bars = 0.2 mm: 95 Paraphaea binotata (Dejean), a specimen from Guangxi 96 Paraphaea minor sp. n., holotype 97 Anchista brunnea (Wiedemann), a paralectotype of picea Chaudoir 98 Anchista pilosa sp. n., holotype 99 Metallanchista laticollis sp. n., holotype 100 Physodera amplicollis van de Poll, a specimen from Taiwan 101 Diamella cupreomicans (Oberthuer), a specimen from Yunnan 102 Diamella arrowi (Jedlicka), holotype 103 Allocota aurata (Bates), a specimen from Tonkin 104 Allocota aurata (Bates), a specimen from Shaanxi 105 Allocota bicolor sp. n., holotype 106 Lachnoderma asperum Bates, a specimen from Taiwan 107 Dasiosoma ivorense Basilewsky, a paratype from Cote d'Ivoire 108 Dasiosoma quadraticolle sp. n., holotype 109 Orionella kathmanduensis (Kirschenhofer), a specimen from Nepal 110 Endynomena pradieri (Fairmaire), a specimen from Fujian.

Figures 111 - 125. Left ovipositors of females, ventral view, scale bars = 0.2 mm: 111 Paraphaea binotata (Dejean), a specimen from Guangxi 112 Paraphaea minor sp. n., a paratype from Hainan 113 Paraphaea philippinensis (Jedlicka), holotype 114 Anchista fenestrata fenestrata (Schmidt-Goebel), a specimen from Nepal 115 Physodera dejeani Eschscholtz, a specimen from Yunnan 116 Physodera eschscholtzii Parry, a specimen from Yunnan 117 Diamella cupreomicans (Oberthuer), a specimen from Yunnan 118 Allocota aurata (Bates), a specimen from Shaanxi 119 Allocota bicolor sp. n., a paratype from Guangdong 120 Lachnoderma asperum Bates, a specimen from Zhejiang 121 Dasiosoma bellum (Habu), a specimen from Guangdong 122 Dasiosoma maindroni (Tian & Deuve), a specimen from Tonkin 123 Dasiosoma quadraticolle sp. n., a paratype from Yunnan 124 Orionella lewisii (Bates), a specimen from Zhejiang 125 Endynomena pradieri (Fairmaire), a specimen from Taiwan.

Figures 138 - 157. Characters of Physoderina. 138 - 139 Internal reproductive system of females, scale bars = 0.2 mm: 138 Dasiosoma quadraticolle sp. n., a paratype from Yunnan 139 Orionella lewisii (Bates), a specimen from Zhejiang. 140 - 142 Right protibia, ventral view, showing the reduction of cleaning spur, scale bars = 0.5 mm: 140 Allocota aurata (Bates) (cleaning spur absent) 141 Allocota bicolor sp. n. (cleaning spur fine) 142 Diamella cupreomicans (Oberthuer) (cleaning spur well developed). 143 - 146 Terminal sternum, showing the setae and male emargination, scale bars = 0.5 mm: 143 Paraphaea binotata (Dejean), male (deeply emarginate, one seta on each side) 144 Paraphaea binotata (Dejean) (straight, two setae on each side), female 145 Allocota aurata (Bates), male (moderately emarginate, two setae on each side) 146 Allocota aurata (Bates), female (straight, two setae on each side, right side unusually with an additional seta). 147 - 148 Umbilical series of 9 th interval, right elytron, scale bars = 0.5 mm: 147 Paraphaea binotata (Dejean) (umbilical series placed in one row) 148 Metallanchista laticollis sp. n. (umbilical series placed in two rows). 149 - 150 Head, showing the different shape of mandibles, scale bars = 0.5 mm: 149 Paraphaea formosana (Jedlicka) (mandibles moderately widen) 150 Allocota bicolor sp. n. (mandibles strongly widen). 151 - 153 Pronotum, showing the different length of setae on front angle, scale bars = 0.5 mm: 151 Allocota viridipennis Motschulsky, (setae short and fine) 152 Allocota cyanipennis Heller, (setae relative long) 153 Allocota bicolor sp. n., (setae very long). 154 - 155 Pronotum, showing the difference on lateral margin, scale bars = 0.5 mm: 154 Anchista fenestrata fenestrata (Schmidt-Goebel), (lateral margin slightly angulated in middle) 155 Paraphaea formosana (Jedlicka), (lateral margin completely rounded in middle). 156 - 157 Pronotal hind angle, showing the geographical variation in Allocota bicolor sp. n., scale bars = 0.2 mm: 156 Allocota bicolor sp. n., a specimen from Guangdong, (hind angle sharp) 157 Allocota bicolor sp. n., holotype from Yunnan, (hind angle slightly rounded).