Key to species of Concavocorona, gen. n. (males)

1. Transverse beige patch on frontoclypeus large, occupying more than 1/3 area of frontoclypeus, enclosing pair of blackish ochreous browlike spots (Fig. 4); aedeagal ventral process approximately triangular in lateral view (Fig. 6)..................................................................................................... C. supercilia sp. n.

-. Transverse beige patch on frontoclypeus small, occupying less than 1/3 area of frontoclypeus, without enclosed spot (Fig. 14); aedeagal ventral process approximately rectangular in lateral view (Fig. 18)................................................................................................................... C. abbreviata (Jacobi), n. comb.