Key to Indian species of Megischus

1. Head orange red; frons coarsely transversely rugose frontally; vertex dorsally with strong up curved rugae; hind coxa slender, spindle-shaped; hind tibia depressed at base on the outer side of widened part; ivory part of ovipositor 1.3× as long as dark apical part (Fig. 56)................................................................ M. alveolifer van Achterberg

- Head black (Fig. 59); frons with coarse subparallel rugae frontally; vertex dorsally with strong almost straight rugae; hind coxa robust; hind tibia strongly convex at base on the outer side of widened part; ivory part of ovipositor 0.5× as long as dark apical part (Fig. 71)............................................... M. ranjithi Binoy, Santhosh & Girish Kumar sp. nov.