Excavated Rove Beetle vs Western Firefly

Side-by-side species comparison

Attribute Excavated Rove Beetle Western Firefly
Scientific Name Omalium excavatum Microphotus angustus
Order Coleoptera Coleoptera
Family Staphylinidae Lampyridae
Size 3-4 mm 8-12 mm
Habitat Gardens Deserts & Drylands
Diet Herbivores Omnivores
Regions Europe, introduced to North America North America
Conservation Least Concern Data Deficient

Excavated Rove Beetle

A small, brownish omaline rove beetle with distinctive excavations on the pronotum. It frequents decaying vegetation and is particularly associated with compost heaps and grass clippings.

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Did You Know?

This species thrives in the heat-generating centers of compost heaps, tolerating temperatures that would be lethal to many other insects.

Western Firefly

A rare western North American firefly with larviform females that glow. Males are winged but produce no light.

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Did You Know?

It is one of very few firefly species found west of the Rocky Mountains, where most people believe fireflies do not exist.