Trigonocorypha, Stal, 1873

Senthilkumar, Natchiappan & Divya, Govindaraj, 2020, A new species of Trigonocorypha (Orthoptera: Tettigoniidae: Phaneropterinae) from Tamilnadu, India, Zootaxa 4802 (1), pp. 189-195 : 194-195

Key to the species of Trigonocorypha occurring in India

1. Short sickle-shaped ovipositor, tegmina; lateral carinae of pronotum not parrallel................................... 2

– Long and narrowed ovipositor, tegmina less than 50 mm; lateral carinae of pronotum parallel........................................................................................... T. abnormis Brunner von Wattenwyl, 1878

2. Tegmina narrow or wide, in middle with pale band in basal area; apex of ovipositor roundly obtuse.................... 3

– Tegmina wide, with a pale colouration in the upper and lower margins towards distal end of the tegmen; apex of ovipositor not obtuse............................................................................................... 4

3. Tegmina broad and slightly elevated over hind wings; Ovipositor short and curved upwards, broad serrations on the upper margin and the apical part of lower margin, apex of ovipositor obtuse........................ T. brevinota Ingrisch, 1996

– Tegmina short and wide and without a pale band in its basal area; Ovipositor short, strongly flattened, bent upward, with fine serration on the entire upper margin and the apical part of lower margin, apex of ovipositor roundly obtuse.. T. unicolor Stoll, 1787

4. Tegmina narrow with a slight notch beyond the middle of anterior margin and a narrow pale band in its basal part; humeral notch moderately depth; ovipositor short, bent upward, with fine serrations on the entire upper margin and apex of the lower margin......................................................................... T. angustata Uvarov, 1922

– Tegmina broad and obtuse at the distal end, pale band in the lower and upper margins of the tegmen and the distal end; Humeral –notch conspicuous with strong depth; Ovipositor short, sickle shaped bent upwards, thick and broad serrations on the entire upper and lower margins, apex of the ovipositor acute, but upper valve extended slight above the lower valve, horny projection at base............................................................................... T. thenensis sp. nov.