Robber Fly vs Dimidiata Deer Fly

Side-by-side species comparison

Attribute Robber Fly Dimidiata Deer Fly
Scientific Name Promachus rufipes Chrysops dimidiata
Order Diptera Diptera
Family Asilidae Tabanidae
Size 15-30 mm 8-11 mm
Habitat Meadows Forests
Diet Predators Blood Feeders
Regions North America, Europe West and Central Africa
Conservation Least Concern Least Concern

Robber Fly

Aggressive aerial predators that catch other insects in flight. Inject prey with neurotoxic saliva that paralyzes and liquefies internal organs for consumption.

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Did You Know?

Robber flies are such efficient aerial predators that they have been recorded catching dragonflies, wasps, and even other robber flies in mid-air.

Dimidiata Deer Fly

A medium-sized deer fly with distinctly banded wings, found in West African rainforests. It serves as a secondary vector of Loa loa alongside C. silacea. Larvae develop in muddy swamp soils near forest streams.

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Did You Know?

Wood smoke fires in villages are used traditionally to repel this fly, which is strongly attracted to dark moving objects.