Key to males of the species of the “ aquilina group”

1 Ventral hind wing with reduced central black spot and the postdiscal band limited distally by wavy margin (Fig. 14B, D)................................................................................................. aquilina

- Ventral hind wing with large central black spot and the postdiscal band limited distally by not wavy margin (Figs 15B, D–18B, D)................................................................................................. 2

2 Uncus distally pointed (Fig. 37C); cornutus with conspicuous spines (Fig. 50)........................ angelica sp. nov.

- Uncus distally rhomboid (Figs 38 C–40C); cornutus without conspicuous spines (Fig. 51–53)......................... 3

3 Uncus with a ventral projection (Fig. 38A, D)............................................................ focus

- Uncus without a ventral projection (Figs 39A, D– 40A, D).................................................... 4

4 Uncus with distal end simple (Fig. 39 C–D); valva distally pointed (Fig. 39E); aedeagus with proximal tip narrow (Fig. 39 G– J)........................................................................................ cofus sp. nov.

- Uncus with distal end weakly bifid (Fig. 40 C–D); valva not pointed distally (Fig. 40E); Aedeagus uniformly wide (Fig. 40 G– J)...................................................................................... donia sp. nov.