Key to species of Antonina Signoret

1 Multilocular disc pores present along dorsal and ventral margins; invaginated pocket absent behind each posterior spiracle........................................................................................... crawi Cockerell

- Multilocular disc pores absent from dorsal margins, but present on venter in mid-region of abdomen and near spiracles; invaginated pocket present behind each posterior spiracle in normal position of legs....................... graminis (Maskell)