European Thick-headed Fly vs Boll's Wood Cockroach

Side-by-side species comparison

Attribute European Thick-headed Fly Boll's Wood Cockroach
Scientific Name Myopa buccata Parcoblatta bolliana
Order Diptera Blattodea
Family Conopidae Ectobiidae
Size 6-10 mm 12-16 mm
Habitat Woodlands Woodlands
Diet Parasitoids Wood Feeders
Regions Europe Texas and the south-central United States
Conservation Least Concern Not Evaluated

European Thick-headed Fly

A small reddish-brown conopid fly with a distinctively swollen face and downward-curving proboscis. It is commonly found basking on sunny tree trunks and fences in spring.

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Did You Know?

It times its emergence with the spring flight period of its Andrena bee hosts, waiting on sunny surfaces to ambush them.

Boll's Wood Cockroach

A small native wood cockroach from the south-central United States. It lives under bark and in rotting logs in wooded areas.

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Did You Know?

It was named after the naturalist Jacob Boll, a Swiss-American who collected insects in Texas in the 1870s.