Thlasia truncata, VIRAKTAMATH & WEBB & YESHWANTH, 2025

Thlasia truncata sp. nov.

Figs 16 View FIGURES 16 FG, 19K, 20G, 37C–G.

Diagnosis. Externally resembles species of Yelahanka , but the forewing claval veins are separate. Male styles apophysis gracefully curved ventrally, aedeagus apically widened before narrowing, with a pair of sclerotized processes with truncate apices on ventral surface and not extending shaft apex.

Description. Greenish yellow, crown margin brown, pronotal lateral margins reddish brown, posterior margin and one median spot occupying entire mesoscutum, faintly fuscous. Forewing margin pale orange brown, upper part of face and frontoclypeus pale brownish red, rest of face and frontoclypeus, thoracic pleurites and sternites, greenish white; legs pale brown; apices of claval veins piceous.

Crown margins in front of eyes straight for a short distance then mesally curved, apex obtusely rounded, medially 0.6× as long as interocular distance, 0.85× as long as median length of pronotum, finely punctate. Ocelli located slightly posterad of imaginary line connecting anterior eye margin dorsally, closer to each other than to adjacent eye. Pronotum finely punctate, posterior margin concave medially, lateral margins slightly divergent, posterolateral angles almost 1.3× as wide as distance between anterolateral angles. Mesonotum as long as median length of pronotum. Forewing with basal half densely punctate, rest sparsely punctate, claval veins separate, outer claval vein prominent, forewing flexed ventrally laterad of outer claval vein.

Male genitalia. Pygofer triangular with dorsal margin straight, about 1.8× as long as height in lateral view, narrowed posteriorly with acutely rounded posterodorsal angle, ventral process wide at apex, slightly twisted in middle with distal margin crenulate, apex not reaching dorsal margin. Subgenital plate in lateral view slightly shorter than pygofer. Style anterior apodeme about 0.4× as long as total length, apophysis slender and gracefully curved ventrally at midlength, with dorsal margin near apex finely serrate. Aedeagus, with well-developed dorsal apodeme slightly less than half as long as shaft, preatrium short, shaft directed posteriorly then curved dorsally, widened in distal half then narrowed apically, ventral surface in apical region membranous, dorsal surface with a pair of ventral processes almost as long as shaft with truncate apex, gonopore apical.

Female not known.

Measurements. Male 7.2 mm long, 2.5 mm wide across eyes and 2.7 mm wide across posterolateral angles of pronotum.

Material examined. HOLOTYPE ♂, INDIA: Arunachal Pradesh: Mayodia , 2463mts, 12.ix.2014, Sweep net, Yeshwanth, H.M. ( UASB).

Etymology. The species name refers to the truncate apices of aedeagal shaft processes in posterior view.

Remarks. T. truncata sp. nov. is peculiar in having gracefully ventrally curved apophysis of the male style.