Clyster galatheaensis, Gupta & Chandra & Das & Ghosh, 2020

Gupta, Devanshu, Chandra, Kailash, Das, Priyanka & Ghosh, Joyjit, 2020, Clyster galatheaensis Gupta, Chandra, Das, and Ghosh, New Species (Coleoptera: Scarabaeidae: Dynastinae: Oryctini) from Great Nicobar Biosphere Reserve, Andaman and Nicobar Islands, India, The Coleopterists Bulletin 74 (2), pp. 411-419 : 416-417

KEY TO THE SPECIES OF CLYSTER FROM INDIA

1. Male pronotal fovea short, with complex, strong, triangular knobs in the middle. Parameres slender, apices triangularly dilated, ventral tooth absent. Parameres in frontal view as in Endrödi (1985: fig. 1816) ................. ....................................... C. itys Echelle

1ʹ. Male pronotal fovea long, with simple knob posteriad of fovea. Parameres strongly contracted behind the middle, apices simple, not dilated, ventral tooth present ................... 2

2. Male pronotal fovea relatively long, rugose area in anterior portion of fovea large (Fig. 7). Pygidium punctate, punctures at lateral angles transversely coalescing (Fig. 15). Each abdominal sternite with a single, continuous row of punctures (Fig. 13). Parameres as in Figs. 20–23 .......................... C. retusus Arrow

2ʹ. Male pronotal fovea smaller, rugose area in anterior portion of excavation relatively small (Fig. 8). Pygidium uniformly, densely rugopunctate (Fig. 16). Each abdominal ventrite with 2 separate rows of punctures on sides (Fig. 14). Parameres as in Figs. 24–27. ........ .......................... C. galatheaensis Gupta ,