Eotrechus kalidasa Kirkaldy, 1902

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 kalidasa Kirkaldy, 1902

Figs 4A-C , 5F , 25

Eotrechus kalidasa Kirkaldy, 1902: 137 (type locality: Carin Cheba, Myanmar).

Eotrechus kalidasa : Distant (1903: 182, fig. 130) (redescription); Paiva (1919: 364) (record "Garo Hills, Assam" [Meghalaya]); Andersen (1982: 8-11, figs 8, 15, 28) (descriptive notes); Tran and Zettel (2006: 46-48, figs 17-20) (descriptive notes).

Material examined.

Paratype: Myanmar • 1 ♀ (macropterous); "Carin Cheba, 900-1100m, L. Fea, 1889 / Distant Coll. 1911-383"; BMNH .

Other material.

India • 1 ♂ (macropterous); Meghalaya, 3 km E Tura ; 25°30'N, 94°14'E; 1150 m a.s.l.; 18 Apr. 1999; L. Dembický & P. Pacholátko leg.; NHMW .

Diagnosis.

Size: macropterous male, length 9.50, width 2.06; macropterous female, length 10.80, width 2.30. Antennal segments subequal in length, segments I and IV slightly longer than segments II and III; segment III shortest. Mesosternum ca. 1.5 × length of metasternum (1.72: 1.13). Fore femur slender in both sexes. Male: abdominal sterna III-VII with longitudinal median groove; sternum VII ca. 0.75 × length of two preceding sterna combined, posterior margin slightly emarginated. Male genitalia: pygophore with two long, relatively slender posterolateral projections (Fig. 4A ); paramere long and slender, sinuate in dorsal view, proximal part strongly curved (convex dorsad) in lateral view, distal part straight, apex rounded (Figs 4C , 5F ); proctiger slightly expanded posterolaterally, posterior margin rounded (Fig. 4B ). Female: abdomen long and slender, genitalia concealed in the abdomen in lateral view.

Remarks.

The record of Eotrechus kalidasa from India has been discussed and confirmed by Tran and Zettel (2006: 47-48), and comparative notes have been presented in detail by Andersen (1982: 10-11).

Distribution.

Myanmar ( Kirkaldy 1902), India: Meghalaya ( Paiva 1919) (Fig. 25 ). Note that the male specimen from Thailand reported as E. kalidasa by Vitheepradit and Sites (2007) and Nakthong et al. (2014) actually belongs to a new species, E. steineri sp. nov. (see below).

Figures

Figure 4. Eotrechus kalidasa, specimen from India (A-C) and E. steineri sp. nov. (D-F). A, D. Pygophore, lateral view; B, E. Proctiger, dorsal view; C, F. Paramere, lateral view (A, B, D, E. Same scale; C, F. Same scale).

Figure 5. Eotrechus steineri sp. nov. (A-E) and E. kalidasa (F). A. Fore leg of male; B. Abdomen of male, ventral view; C, D. Posterior part of abdomen of female, dorsal and lateral views; E, F. Paramere, lateral view (B-D. Same scale; E, F. Same scale).

Figure 25. Distribution records of species of Eotrechus. Squares represent E. kalidasa species group; circles represent E. pingae species group; triangles represent species unassigned to a group.