Key to the species of Calliphora of the West Indies

1. Basicosta yellow to orange ........................................................................................................................................... 2

- Basicosta dark brown to black ............................................................mainland Calliphora species, not keyed further.

2. Genal dilation with reddish ground color on anterior half or more; katepisternal formula 2:1 (Fig. 8); male frons narrow, 0.075 head width; not collected in the West Indies to date ...................................................................... C . vicina

- Genal dilation wholly dark; katepisternal formula 1:1 (Fig. 9), male frons broad, 0.29 (0.28–0.30/5) head width, slightly narrower than width of eye; known only from Cuba, Jamaica and the Dominican Republic ...... C . maestrica