Horned Passalus vs Northern Cave Ground Beetle
Side-by-side species comparison
| Attribute | Horned Passalus | Northern Cave Ground Beetle |
|---|---|---|
| Scientific Name | Odontotaenius disjunctus | Pseudanophthalmus menetriesi |
| Order | Coleoptera | Coleoptera |
| Family | Passalidae | Carabidae |
| Size | 28-37 mm | 4-6 mm |
| Habitat | Woodlands | Caves |
| Diet | Wood Feeders | Predators |
| Regions | Eastern North America | Appalachian region, eastern United States |
| Conservation | Least Concern | Vulnerable |
Horned Passalus
A large, shiny black beetle with a small horn on its head, found in rotting logs. It lives in family groups where adults and larvae communicate by stridulation.
Did You Know?
Adults chew wood into pulp and feed it to their larvae, one of the few beetles to show true parental care.
Northern Cave Ground Beetle
A small, blind, unpigmented cave beetle from the limestone caves of the Appalachian region. The genus contains over 250 species, most known from single cave systems.
Did You Know?
The genus Pseudanophthalmus contains over 250 described cave beetle species, most from single caves, making it the most species-rich genus of cave animals in the world.