Key to species of Colpoclypeus

1. Female............................................................................................. 2

1’. Male................................................................................................ 3

2. Legs yellowish with medial area (0.70 length) of femora dark. Head width/height = 1.35–1.46. Scape length 5.00–6.25X its width. Mesopleural suture almost straight (Fig. 1e). Supracoxal flange absent......... Colpoclypeus michoacanensis n. sp.

2’. Legs completely yellowish. Head width/height = 1.18. Scape length 4.50X its width. Mesopleural suture curved (Fig. 1 j). Supracoxal flange present....................................................... Colpoclypeus florus (Walker)

3. Fore femur strongly swollen (Fig. 1 g), twice as long as wide; fore tarsus with basal 3 tarsomeres all wider than long or quadrate. Genitalia: digitus with 4 or 5 apical teeth and one basal tooth; with a pyramidal-shaped raised intervolsellar process (Fig. 1 h).................................................................... Colpoclypeus michoacanensis n. sp.

3’. Fore femur not swollen, 4.4–5.0X as long as wide; fore tarsus with basal 3 tarsomeres all longer than wide. Genitalia: digitus with two apical teeth and without basal tooth; without a pyramidal-shaped raised intervolsellar process (Fig. 1 i)........................................................................................ Colpoclypeus florus (Walker)