Key to species of Aquilonia using males

1. Elytra orange yellow with black apices; pronotum and elytra parallel sided; pronotal width subequal to width across the elytral humeri; known only from northern Australia in Cape York peninsula and around Darwin (Fig. 64)............ costata (Lea) Elytra pale brown with or without an apical dark area; pronotum with lateral margins divergent posteriorly and width subequal to or wider than width across the elytral humeri; Known from New Guinea at Buna Bay or Misima island ………………….2

2. Without dark elytral apices...................................................... messoria (Olivier) comb. nov. With dark elytral apices (Fig. 65)........................................ similismessoria (Ballantyne) comb. nov.