I’m pretty sure this fly is a species in the family Richardiidae.
It was really concentrating on mopping up whatever that blob is, allowing me to get several shots from various angles.
Subjects: Flies, Insects, and Richardiid Flies.
Places: Cahuita to Manzanillo, Costa Rica, Limon Province, and North America.
Life Stages: Adult.
Taxa: Class Insecta, Family Richadiidae, and Order Diptera.
Colors: Black, Blue, Red, Transparent, White, and Yellow.