1	Posterior part of scutellum rounded (a), or concave (b)	2
–	Posterior part of scutellum with a medial spine (A, B)	3
2	Posterior part of scutellum concave (a); scutellum with lateral ridges (a). Occipital carina present dorsally (medially interrupted) (a); occiput with transverse striations (a). Face with lateral carinae extending from lateral ocelli to antennal scrobes (b)	Anacharoides
–	Posterior part of scutellum rounded (A); scutellum smooth without lateral ridges (A). Occipital carina dorsally absent; occiput smooth (A). Face without carinae (B)	Melanips
3	Vertex with a median vertical groove backwards to occiput (a, b). Carinae extend from posterior ocelli forwards to antennae (a). Ocelli raised. Compound eyes bounded by a strong continuous carina (a, b)	Prosaspicera
–	Vertex without a groove (B). Ocelli hardly raised. Carina surrounding compound eyes always interrupted near malar space (A)	Aspicera