Western Bumble Bee vs Cuckoo Wasp

Side-by-side species comparison

Attribute Western Bumble Bee Cuckoo Wasp
Scientific Name Bombus occidentalis Chrysis ignita
Order Hymenoptera Hymenoptera
Family Apidae Chrysididae
Size 10-22 mm 6-12 mm
Habitat Mountains Underground
Diet Nectar Feeders Nectar Feeders
Regions Western North America Europe, Asia
Conservation Vulnerable Least Concern

Western Bumble Bee

A once-common bumble bee of western North America that has experienced dramatic population declines since the late 1990s. They nest underground in abandoned rodent burrows.

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Did You Know?

Their catastrophic decline is linked to a pathogen accidentally spread through commercial bumble bee rearing facilities.

Cuckoo Wasp

A stunning metallic jewel-toned wasp that lays eggs in other wasps nests. Can curl into an armored ball when attacked. Its iridescent colors are among the most vivid in nature.

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Did You Know?

Cuckoo wasps have an armored concave underside — when discovered by the host wasp, they curl into a perfect shiny ball that the host cannot sting through.