Key to the Epilamprinae genera from South India and Sri Lanka

1. Hind metatarsus distinctly shorter than other segments combined; spines along lower margin absent, substituted by long and flexible hairs (Fig. 12 C)............................................................................... 7.

- Hind metatarsus slightly shorter or longer than other segments combined; spines along lower margin present or absent, never substituted by hairs (Figs. 2 D, E, 4C, 5C, 6D, E, 10D)....................................................... 2.

2. Euplantula along the lower margin of hind metatarsus large, occupying more than a half of the metatarsus length (Figs. 2 D, E, 4C, 5C, 6D, E)....................................................................................... 3.

- Euplantula along the lower margin of hind metatarsus small, apical (Fig. 10 D)..................................... 5.

3. Tegmina present, not reduced to lateral flaps (Fig. 1 E, G, I, J)............................... Morphna Shelford, 1910 .

- Tegmina reduced to lateral flaps or absent................................................................. 4.

4. Tegmina and wings reduced to lateral flaps............................. Opisthoplatia Brunner von Wattenwyl, 1865 .

- Tegmina and wings absent (Figs. 1B, 2 B)............................................ Indoapterolampra, gen. nov.

5. Hind metatarsus with 2 distinctly unequal rows of spines along the lower margin (Fig. 10 D); sexual dimorphism is strongly expressed: males with tegmina and wings completely developed (Fig. 11C), females without wings and with tegmina reduced to lateral flaps (Fig. 10 I) or absent........................................... .. Calolamprodes Bey-Bienko, 1969 .

- Hind metatarsus with 2 more or less equal rows of spines along lower margin; sexual dimorphism varies............... 6.

6. Sexual dimorphism is expressed: males with tegmina reaching the 6th abdominal tergite and wings reduced, females with tegmina and wings completely absent; hypandrium with the right caudal side broadly excavated; caudal margin of concavity curved, forming a distinct tooth................................................ Princisola Gurney & Roth, 1976 . - Sexual dimorphism is poorly marked: both sexes with tegmina and wings surpassing abdominal apex (Fig. 11B); hypandrium of different type .................................................................. Rhabdoblatta Kirby, 1903 .

7. Tegmina with obsolete venation, CuP reduced (Figs. 14 A, B, D, 16B, E)....................... Thorax Saussure, 1862 .

- Tegmina with distinct venation, CuP present (Figs. 14 E, 16G)............................ Phlebonotus Saussure, 1862 .