Cape Stag Beetle vs Rain Beetle Hunter

Side-by-side species comparison

Attribute Cape Stag Beetle Rain Beetle Hunter
Scientific Name Colophon westwoodi Calosoma cancellatum
Order Coleoptera Coleoptera
Family Lucanidae Carabidae
Size 25-40 mm 18-25 mm
Habitat Mountains Grasslands
Diet Detritivores Predators
Regions South Africa (Western Cape mountains only) North America, from Canada to Mexico
Conservation Endangered Least Concern

Cape Stag Beetle

A rare flightless stag beetle found only on high mountain peaks of the Western Cape. Males have short but robust mandibles.

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Did You Know?

All Colophon species are protected by South African law and CITES due to their extreme rarity and restricted ranges.

Rain Beetle Hunter

A medium to large caterpillar hunter with dark elytra marked by rows of rectangular pits giving a grid-like appearance. It is one of the most common Calosoma species across North American prairies.

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Did You Know?

It emerges in massive numbers after rain events on the Great Plains, earning the nickname rain beetle, and can be found running across roads in huge aggregations.