Key to genera of the Deltocephalus group (Males)

1. Aedeagal shaft strongly curved dorsally with apical gonopore.................................................. 2

- Aedeagal shaft weakly curved dorsally or not curved, gonopore variable (Figs 8 C, 9E, 16E, 19F, 20E, 22E, 24D, 25E, 32F)................................................................................................ Maiestas

2. Aedeagal shaft with ventroapical process (Fig. 5 D)...................................................... Recilia

- Aedeagal shaft without apical process (Figs 1 E, 2B, 3F, 3H, 4H)..................................... Deltocephalus