Summer Chafer vs Rain Beetle Hunter

Side-by-side species comparison

Attribute Summer Chafer Rain Beetle Hunter
Scientific Name Amphimallon solstitiale Calosoma cancellatum
Order Coleoptera Coleoptera
Family Scarabaeidae Carabidae
Size 14-18mm 18-25 mm
Habitat Underground Grasslands
Diet Root Feeders Predators
Regions Europe North America, from Canada to Mexico
Conservation Least Concern Least Concern

Summer Chafer

A medium-sized golden-brown chafer that swarms at dusk around midsummer. It crashes clumsily into people and walls.

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Did You Know?

Named for its habit of swarming around the summer solstice, filling warm June evenings with buzzing flight.

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.