Hawaiian Picture-wing Fly (Heteroneura) vs Hessian Fly

Side-by-side species comparison

Attribute Hawaiian Picture-wing Fly (Heteroneura) Hessian Fly
Scientific Name Drosophila heteroneura Mayetiola destructor
Order Diptera Diptera
Family Drosophilidae Cecidomyiidae
Size 5-7 mm 2-4 mm
Habitat Forests Farmland
Diet Wood Feeders Gall Makers
Regions Oceania (Hawaii - Big Island) Cosmopolitan - originally Eurasia, now worldwide
Conservation Endangered Least Concern

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.

Hessian Fly

A tiny dark gall midge that is one of the most destructive pests of wheat and barley worldwide. Adults resemble small dark mosquitoes and live for only a few days.

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Did You Know?

Named after Hessian soldiers in the American Revolution who supposedly brought it to North America in straw bedding.