Rain Beetle Hunter vs Red Oak Borer
Side-by-side species comparison
| Attribute | Rain Beetle Hunter | Red Oak Borer |
|---|---|---|
| Scientific Name | Calosoma cancellatum | Enaphalodes rufulus |
| Order | Coleoptera | Coleoptera |
| Family | Carabidae | Cerambycidae |
| Size | 18-25 mm | 18-30 mm |
| Habitat | Grasslands | Woodlands |
| Diet | Predators | Wood Feeders |
| Regions | North America, from Canada to Mexico | Eastern North America |
| Conservation | Least Concern | Least Concern |
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.
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.
Red Oak Borer
A large reddish-brown cerambycid that breeds in living red oaks across eastern North America. It has a strict two-year life cycle with synchronized adult emergence in odd-numbered years in some regions. Larvae bore into heartwood.
Did You Know?
Outbreaks of this beetle in the Ozarks during the early 2000s killed thousands of red oak trees across the region.