Eotrechus longipes Andersen, 1982

Tran, Anh Duc, Zettel, Herbert & Sites, Robert W., 2023, Revision of the genus Eotrechus Kirkaldy (Hemiptera, Heteroptera, Gerridae), with descriptions of six new species, Deutsche Entomologische Zeitschrift 70 (1), pp. 69-111 : 69

Eotrechus longipes Andersen, 1982

Figs 20A , 21 , 26

Eotrechus longipes Andersen, 1982: 11-13, figs 3, 6, 9, 14, 16, 22, 29, 30 (type locality: Jukdah-Ghoom, India).

Eotrechus longipes : Andersen (1998: 5) (checklist); Thirumalai (2002: 59) (distribution); Basu et al. (2017: 397) (record Sikkim, India).

Material examined.

Holotype: India • ♂ (macropterous); "Jundah-Ghoom, 14-VI-19"; BMNH.

Other material.

Nepal • 1 ♂ (apterous); Seti D: Bajhang #21, way Ghatganga Khola SW Shima (29°43'16"N, 81°20'44"E) to NE Shima (29°44'51"N, 81°23'04"E); 2000- 2300 m a.s.l.; 19 Jun. 2009; J. Küßner leg.; NME .

Diagnosis.

Size: apterous males, length 7.6-8.2, width 2.4-2.6; macropterous males, length 8.9-10.0 (holotype 10.0), width 2.30-2.71 (holotype 2.71); apterous female, length 8.3, width 2.6; macropterous females, length 8.9-10.2, width 2.6-2.9 (from Andersen 1982). Mesosternum ca. 3.0 × length of metasternum. Male: fore femur moderately incrassate, fore trochanter with small tubercle bearing black, minute setae (Fig. 21A ); abdominal sterna V-VII medially grooved, more widened on sternum VII; length of sternum VII subequal to two preceding sterna combined, posterior margin slightly emarginated. Male genitalia: venter of segment VIII broadly, medially depressed; pygophore with two broad posterolateral projections, lower margin of projection with a notch (in lateral view); proctiger slender, with pointed apex (Fig. 21B ). Female: abdomen about a half of body length; sternum VII ca. 1.5 × length of two preceding sterna combined; genitalia visible in lateral view.

Remarks.

See Remarks under E. anderseni sp. nov. for comparative notes on three species of the E. longipes group.

Distribution.

India: W. Bengal, Uttar Pradesh, Arunachal Pradesh, Sikkim; Nepal ( Andersen 1982; Thirumalai 2002; Basu et al. 2017) (Fig. 26 ).

Figures

Figure 20. Habitus of Eotrechus species. A. E. longipes, apterous male from Nepal; B. E. anderseni sp. nov., macropterous female.

Figure 21. Eotrechus longipes, holotype. A. Right fore leg; B. Abdominal apex, ventral view.

Figure 26. Distribution records of species of Eotrechus. Circles represent E. longipes species group; squares represent E. petraeus species group; stars represent E. vietnamensis species group.