PROVISIONAL KEY TO THE INDIAN CARRHOTUS SPECIES

1. Males ............................................................................... 2

– Females ............................................................................. 7

2. Tegulum with a prolateral, knife-like protrusion (arrowed in Fig. 9), RTA bifurcated at its tip (Fig. 10) ................ ................................................................ C. andhra sp.n.

– Tegulum without a prolateral protrusion, RTA pointed. 3

3. Embolus filiform, longer than cymbium (figs 8, 9 in Prószyński [1992]) ........................................... C. tristis

– Embolus otherwise (Figs 20, 23, 65) .............................. 4

4. Embolus hook-shaped (Figs 20, 23); RTA straight, directed anteriad (Figs 21, 24) ............................................... 5

– Embolus straight and thick, conical apically (Figs 48, 65); RTA hook-shaped (Fig. 49) or at least bent ventrad (Fig. 66) ................................................................................. 6

5. Dorsum brownish, without a white colour pattern (Fig. 11); male palp (Figs 20, 21) ................... C. assam sp.n.

– Dorsum dark brown, with two pairs of white spots (Fig. 22); male palp (Figs 23, 24) ........................... C. sannio

6. RTA markedly hook-shaped, bent ventrad (Figs 45, 49) ............................................................... C. silanthi sp.n.

– RTA only slightly bent ventro-apicad (Figs 62, 66) ......... .......................................................................... C. viduus

7. Copulatory openings placed anteriorly (Figs 63, 71, 73, 81) .................................................................... C. viduus

– Copulatory openings placed posteriorly (Figs 26, 46, 50) ....................................................................................... 8

8. Insemination ducts comparatively long and loop anteriorly (Fig. 27) ...................................................... C. sannio

– Insemination ducts comparatively short and diverge laterally (Figs 47, 51) ................................... C. silanthi sp.n.