Ranatra flagellata Lansbury, 1972

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 flagellata Lansbury, 1972

Ranatra flagellata Lansbury, 1972: 335–336 (type locality: Sri Lanka).

Material examined. No material available.

Diagnosis (based on description by Lansbury, 1972). Body length: males 29.5, females 30.0–33.0; siphon length ca. 0.87–1.02× body length; lorum lower than clypeus; vertex higher than eye, evenly rounded, without tubercle; eye width ca. 1.4× interocular width; hemelytra slightly surpassing posterior margin of tergum VI; space between middle coxae subequal to space between hind coxae; posterior margin of metasternum convex; hind femur, when folded back parallel to body, slightly surpassing posterior margin of sternum VI (in both sexes); paramere constricted in distal part, apical hook broadly curved and slender, tip of hook narrowly rounded.

Distribution. Sri Lanka ( Lansbury, 1972).