Uvarovia Bolívar, 1930

Tan, Ming Kai, Japir, Razy & Chung, Arthur Y. C., 2022, Contribution to the taxonomy of Uvarovia (Orthoptera: Chorotypidae: Mnesicleinae) from Borneo and Malay Peninsula, Zootaxa 5093 (5), pp. 533-546 : 535

Genus Uvarovia Bolívar, 1930

Uvarovia Bolívar, 1930: 200

Uvarovia — Bolívar, 1931: 383; Rehn, 1948: 120; Descamps, 1974a: 1656

Type species. Uvarovia longipennis Bolívar, C. , by monotypy and original designation

Distribution. Borneo (Kuching), Malay Peninsula (Perak, Singapore), Sumatra (Sipora Islands)

Diagnosis (after Bolívar, 1931). The fastigium of the vertex flat, horizontally directed and slightly protruding the eyes (in lateral view). The frons short, broad, with lateral keels almost parallel or somewhat divergent towards the epistoma. The eyes elliptical in shape with vertical dark stripes patterns. The antennae short. The tegmina narrow, transparent; slightly hunched back at the apical half; slightly or not widened towards the apex, the apex usually sharply-rounded. The hind wings hyalinous with dark veins. Legs short and strong.

Male: The 8 th tergite normal, with the posterior margin broadly concave. The 9 th tergite represented by an independent central portion (9c) and a large lobe on each side (9l), completely fused to the set of tergites 10 th and 12 th tergites (10+12th). The 10 th and 12 th tergites are clearly delimited in the dorsal portion; the 12 th tergite forms a supra-anal plate with lanceolate apex. The cerci U-bent with apex chitinised and acute.

Female: The supra-anal plate lanceolate, acute at the apex. The subgenital plate narrow and elongated, smooth. The ovipositor valves short and strongly toothed. The pileolus is very narrow and elongated.

Species composition.

1. Uvarovia gracilipes Bolívar, 1931 from Borneo ( Sarawak: Kuching)

2. Uvarovia longipennis Bolívar, 1930 from Malay Peninsula

3. Uvarovia shelfordi Bolívar, 1931 from Borneo ( Sarawak: Kuching, Mount Matang)

a. Uvarovia shelfordi siebersi Bolívar, 1944

4. Uvarovia strigata (Bolívar, 1898) from Sumatra (Sipora Islands)

Key to species for females (after Bolívar, 1931)

1. Tegmina with two brown oblique bands, narrowly and imperfectly marked, in its apical third. Distribution: Sumatra and Malay Peninsula............................................................................................ 2

1’. Tegmina completely transparent, without any trace of dark bands in its apical third. Distribution: Borneo................ 3

2. Hind wings more elongated, almost 2.5 times as long as wide. Distribution: Malay Peninsula.............. U. longipennis

2’. Hind wings less elongated, only 2.0 times as long as wide. Distribution: Sumatra........................... U. strigata

3. Tegmina and hind wings exceeding apex of the hind femora by 2–3 mm. Hind wings more than 2.0 times as long as wide. Hind femora stouter (maximum width <0.33 times the length hind femur). Subgenital plate with three equally sized triangular lobules at apex...................................................................................... U. shelfordi

3’. Tegmina and hind wings not reaching the apex of the hind femora. Hind wings less than 2.0 times as long as wide. Hind femora with portion long and thin filiform (maximum width>0.4 times the length hind femur). Subgenital plate with a medial triangular lobule and two more broad and rounded lateral lobules at apex................................. U. gracilipes

Key to species for males

Note: The male of U. strigata remains unknown.

1. 9c distinctly elongated and strongly bilobed at the apex....................................................... 2

1’. 9c stouter and faintly bilobed at the apex........................................................... U. shelfordi

2. 9c apex bilobed with apices of lobes broadly round, black. 9l extend and narrowing posteriorly into a triangular lobe with obtuse apex. Cercus bent 90° at apical third, apical part lanceolate. Distribution: Borneo.......................... U. gracilipes

2’. 9c apex bilobed with apices of lobes narrow, round and pointing externally, not black. 9l forming three lobes. Cercus U-bent at apical third, apical part tapering into an acute apex. Distribution: Malay Peninsula....................... U. longipennis