Blandford Fly vs Hawaiian Picture-wing Fly (Heteroneura)

Side-by-side species comparison

Attribute Blandford Fly Hawaiian Picture-wing Fly (Heteroneura)
Scientific Name Simulium posticatum Drosophila heteroneura
Order Diptera Diptera
Family Simuliidae Drosophilidae
Size 2-3 mm 5-7 mm
Habitat Rivers & Streams Forests
Diet Blood Feeders Wood Feeders
Regions Europe Oceania (Hawaii - Big Island)
Conservation Least Concern Endangered

Blandford Fly

A notorious black fly that causes severe allergic reactions with its bite around the Blandford area of Dorset. Females need blood meals for egg development. Larvae develop in clean rivers.

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Did You Know?

Named after Blandford Forum in Dorset where outbreaks of painful bites affect thousands of people each summer.

Hawaiian Picture-wing Fly (Heteroneura)

A remarkable Hawaiian picture-wing fly famous for its hammer-shaped head, found only on Hawaii Island. Males use their broad, flattened heads in head-butting contests for mating rights. It breeds in decaying Clermontia bark.

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Did You Know?

Males have uniquely hammer-shaped heads that they use as battering rams, headbutting rival males in combat over territory and mates.