Polyphaginae Saussure, 1864 Corydiinae[1] is a subfamily of the order Blattodea (cockroaches).

Many are known as sand cockroaches.

The subfamily, comprising about 20 genera, contains half the genera in Corydiidae.

[2][3] One prominent species is the desert cockroach, Arenivaga investigata.

The Cockroach Species File lists:[2]