Twenty-spotted Leaf Beetle vs Black Caterpillar Hunter
Side-by-side species comparison
| Attribute | Twenty-spotted Leaf Beetle | Black Caterpillar Hunter |
|---|---|---|
| Scientific Name | Chrysomela vigintipunctata | Calosoma sayi |
| Order | Coleoptera | Coleoptera |
| Family | Chrysomelidae | Carabidae |
| Size | 7-9 mm | 20-28 mm |
| Habitat | Forests | Grasslands |
| Diet | Herbivores | Predators |
| Regions | Europe, Northern Asia | Central and western North America |
| Conservation | Least Concern | Least Concern |
Twenty-spotted Leaf Beetle
A distinctive leaf beetle with reddish-brown elytra marked with twenty black spots arranged in rows. It feeds on willow and poplar in temperate forests.
Did You Know?
Like other Chrysomela species, its larvae produce chemical defenses derived from compounds in their host plant's leaves.
Black Caterpillar Hunter
A large, entirely black caterpillar hunter beetle native to North American prairies and grasslands. It is a powerful runner that hunts caterpillars, especially cutworms, at night.
Did You Know?
Pioneer farmers on the Great Plains observed massive aggregations of this beetle appearing after rain to hunt cutworm outbreaks and called them rain beetles or thunderbugs.