Ranatra digitata Hafiz & Pradhan, 1949

Tran, A. D. & Zettel, H., 2021, Taxonomy of the Ranatra biroi group sensu Lansbury, 1972 (Nepomorpha: Nepidae), with descriptions of two new species, Raffles Bulletin of Zoology 69, pp. 507-521 : 509

Ranatra digitata Hafiz & Pradhan, 1949

( Fig. 1A )

Ranatra digitata Hafiz & Pradhan, 1949: 371–372 (type locality: Titilagarh, Patna State, Orissa [= Odisha], India); Lansbury, 1972: 337–338 (redescription).

Material examined. SRI LANKA: 1 male ( ZRC _ ENT00013064 ), Tabbowa Wewa nr. Puttalam, 8°04′N, 79°56′E, coll. M. M. Bahir, 23 October 1998, MMB006 .

Diagnosis. Body length: males 28.0–30.0, females 28.5–33.0 (also based on description by Lansbury, 1972); siphon length ca. 0.88–0.97× body length; lorum lower than clypeus; vertex higher than eye, evenly rounded, without tubercle; eye width ca. 1.5× interocular width; space between middle coxae clearly narrower (about 0.75×) than space between hind coxae; posterior margin of metasternum convex; hind femur, when folded back parallel to body, reaching midlength of operculum (in both sexes); paramere constricted in distal part, apical hook broadly curved and slender, tip of hook narrowly rounded ( Fig. 1A ).

Distribution. India: Patna State, Punjab, Bengal; Sri Lanka ( Lansbury, 1972).

Figures

Fig. 1. Parameres of Ranatra species. A, Ranatra digitata, from Sri Lanka (ZRC_ENT00013064); B, R. biroi, from Irian Jaya, Indonesia; C, R. rafflesi, holotype; D, R. rafflesi, from West Kalimantan, intermediate form (ZRC_ENT00013018); E,R.rafflesi, from West Kalimantan, slender form (ZRC_ENT00013054). C, D, E same scale.