Key to genera of Isometopini from India

1. Head strongly appressed, wide; in dorsal view at least three times wider than long in females and at least seven times wider than long in males; in frontal view 1.5 times wider than high in the males. Ocelli proportionally small, widely separated at least by three times their diameter in males and five times in females. Frons with a flange-like hood apically, partially hiding clypeus (tylus), mandibular plate (juga), and maxillary plate (lora)...................................... Paloniella Poppius

– Head less appressed, slightly longer; in dorsal view, less than three times wider than long in females and about five times wider than long or less in males. Ocelli proportionally larger, separated by a distance less than three times their diameter in males and five times in females. Frons lacking a flange-like hood apically................................... Isometopus Fieber