Leptopus travancorensis Distant 1910
Abstract
Leptopus travancorensis Distant, 1910, new record (Figs. 1C, 1D, 2B) Leptopus travancorensis Distant, 1910: 225; Horvath, 1911: 367; Drake & Hoberlandt, 1951b: 4; Vinokurov, 2012: 592; Khazaei et al., 2020: 254. Material examined. CHINA, Xizang: 11 males, 12 females, Chayu: 28°22'33''N, 97°1'14''E, 1479 m. a.s.l., 2022. viii.18, leg. Qiang Xie (SYSBM). Yunnan: 4 males, 1 female, Menghai, Bulangshan: 21°34'55''N, 100°16'53''E, 857 m. a.s.l., 2019.vii.25, leg. Qiang Xie & Yanhui Wang (SYSBM); 2 males, 1 female, Cangyuan, Mangku village: 23°13'54''N, 99°2'43''E, 920 m. a.s.l., 2019.viii.4, leg. Yanhui Wang (SYSBM); 1 female, Baoshan, Baihualing: 25°17'49''N, 98°48'10''E, 1500 m. a.s.l., 2015.viii.5, leg. Haoyang Wu (SYSBM); 1 male, Baoshan, Cuanlong village: N 24°59'3'' E 98°43'45'' 1250 m. a.s.l., 2025.viii.7, leg. Haoyang Wu, light trap (SYSBM). Sichuan: 5 males, 3 females, Miyi county: 27°5’57’’N, 101°54’42’’E, 1410 m. a.s.l., 2021.iv.30, leg. Qiang Xie (SYSBM). NEPAL, Bahrabise: 1 female, Sindhu District, 820 m a.s.l., 1979.xi.9, leg. M. Tomokuni (USNM). INDIA, Kamaon: 2 males, Haldwani District, H.G.C., 1956, C.J. Drake Collection (USNM). Diagnosis. Body length of male (3.46–4.13), female (3.65–4.40). Head width across eyes approximate to pronotum maximum width. Head, pronotum, scutellum, and hemelytra mainly black; semi-spherical protuberance bearing 2 ocelli, distinct mark behind ocelli, two spots on posterior lobe of pronotum, margins of the clavus, outer margin of corium and five spots or stripes on the corium yellowish-white; membrane fuliginous with the darker veins. Compound eyes ochraceous, glabrous or with short slender setae; vertex with dense white hairs; venter of head with three spines beneath each compound eye; clypeus light-brown with sparse white hairs; bucculae dark brown. Antennal segment I short and stout, inner side yellowish white, outer side ochraceous; segments II-IV ochraceous. Labium segment II yellowish; segments III and IV dark-brown. Femora yellowish white with brown stripes; tibiae and tarsi brown. Hemelytra, scutellum, and pronotum with golden setae and punctured. Ventral side black with white pubescence; sterna with paler margins. Paramere apically cylindrical with many long hairs, not extended (Fig.2B). Remarks. This genus currently comprises eight recognized species.According to the identification key provided by Khazaei et al. (2020), this species belongs to the group that includes L. travancorensis Distant, 1910 and L. marmoratus (Goeze, 1778), characterized by fully macropterous hemelytra, weakly convex costal margins, and hemelytra that are more uniformly black with scattered, faintly contrasting pale markings. Based on these features, L. riparius Hsiao, 1964 is also assigned to this group. However, L. marmoratus can be readily distinguished from the other two species by several diagnostic traits: the presence of long setiform (bristle-like) spines on the dorsum; a distinct and regular row of spines on the corium outer margin; the third antennal segment about three times longer than the second; and a preapical black or brown ring at the apex of the femora. Moreover, although L. travancorensis is somewhat similar to L. riparius in certain respects, it can be easily distinguished by differences in ground color, golden hairs on the dorsum; and the different structure of the paramere. Habitat notes. Specimens of this species are commonly collected underneath large stones along streams, particularly in habitats shaded by tree cover. Distribution. India (Karnataka, Travancore); Nepal (Bahrabise, Sindhupalchok district) (collections of USNM); China (Xizang, Yunnan, Sichuan).
Authors 2
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Affiliation as printed
Naturalis Biodiversity Centre, 2300 RA, Leiden, The Netherlands
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Affiliation as printed
State Key Laboratory of Biocontrol, School of Ecology / School of Life Sciences, Sun Yat-sen University, Shenzhen / Guangzhou, Guangdong, China
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