River Midge vs Dimidiata Deer Fly

Side-by-side species comparison

Attribute River Midge Dimidiata Deer Fly
Scientific Name Rheotanytarsus exiguus Chrysops dimidiata
Order Diptera Diptera
Family Chironomidae Tabanidae
Size 3-5 mm 8-11 mm
Habitat Rivers & Streams Forests
Diet Omnivores Blood Feeders
Regions Europe West and Central Africa
Conservation Least Concern Least Concern

River Midge

A small filter-feeding midge that builds silken nets on submerged stones in flowing water. Larvae are among the most abundant invertebrates in clean streams.

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Did You Know?

Larvae build tiny fan-shaped silk nets that function like miniature versions of caddisfly catch-nets.

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.