Banded Blackfly vs Giant Net-Winged Midge

Side-by-side species comparison

Attribute Banded Blackfly Giant Net-Winged Midge
Scientific Name Simulium ornatum Bibiocephala grandis
Order Diptera Diptera
Family Simuliidae Blephariceridae
Size 2-4 mm 10-15 mm
Habitat Rivers & Streams Mountains
Diet Herbivores Omnivores
Regions Europe North America
Conservation Least Concern Least Concern

Banded Blackfly

A widespread European black fly species complex found in diverse stream types. Larvae filter-feed from silken pads attached to trailing vegetation and stones.

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Did You Know?

Recent DNA studies revealed that what was considered one species is actually a complex of several cryptic species.

Giant Net-Winged Midge

The largest net-winged midge in North America, found in powerful western mountain torrents. Larvae have six robust suction discs for gripping wet rock.

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Did You Know?

At up to 15 mm, it is a giant among net-winged midges, most of which are under 8 mm.