Eotrechus Kirkaldy 1902

Key to the known Indian species of Eotrechus (males) 1 Body mainly brown in color, covered with golden or green pubescence..................... 2 – Body mainly black in color, covered with golden pubescence..................................... 3 2 Fore femur greatly incrassate throughout or basally..................................................... 4 – Fore femur simple and very slender, ventral surface without spine-like hairs; pygophore of male with elongated postero-lateral projections and bearing brush-like hairs.......................................................................................................... E. kalidasa Kirkaldy, 1902 3 Body length less than 10 mm; fore femur moderately incrassate in basal part..............5 – Body length more than 10 mm; fore femur slender, without any modification, only slightly incrassate in basal part; pygophore broad with long hair tufts and a pair of long curved projections.............................................................................. E. fuscus sp. nov. 4 Body length more than 7 mm; genital segment large, ventrally flattened; pygophore sub-quadrangular, with a ventral, transverse depression and with lateral projections................................................................................................. E. brevipes Andersen, 1982 – Body length more than 7 mm; genital segment wide with almost straight postero-ventral margin; pygophore broad, suboval with paired long bristle-like black hair tufts lateroventrally................................................................. E. pilicaudatus Tran & Zettel, 2006 5 Male genital segment relatively large; pygophore suboval with a posteriorly-directed projection on each side, in lateral view, projection of pygophore with a small notch................................................................................................. E. longipes Andersen, 1982 – Male genital segment depressed and medially grooved; pygophore basally constricted with lateral projection on each side, in lateral view, projection of pygophore without a small notch........................................................................ E. terrestris Andersen, 1982
Published as part of Basu, Srimoyee, Chandra, Kailash, Venkatesan, Thiruvengadam & Icar-Nbair, 2017, Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae), pp. 391-398 in Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) (Acta. Ent. Mus. Natl. Pragae) 57 (2) on page 397, DOI: 10.1515/aemnp-2017-0083, http://zenodo.org/record/5315963
{"references":["ANDERSEN N. M. 1982: Semiterrestrial water striders of the genera Eotrechus Kirkaldy and Chimarrhometra Bianchi (Insecta, Hemiptera, Gerridae). Steenstrupia 9 (1): 1 - 25.","TRAN A. D. & ZETTEL H. 2006: Notes on Eotrechus Kirkaldy, 1902 (Heteroptera: Gerridae) with descriptions of two new species. Zootaxa 1353: 39 - 51."]}