The body size of the Hardwood Stump Borer beetle is about
two inches long. The dorsal coloration is either purple or black
with no maculations present. Its common habitat is dry upland
hardwood forests, cut-over areas, or in swamp lands where small
grubs are abundant, including those on the water surface, such
as mosquito larva. The adult Hardwood Stump Borer beetle is sexually
active in the fall.
There are approximately 100 species of Hardwood Borer beetles in the US, included in four genera. Two genera occur in Florida and south Alabama.
Adult beetles are nocturnal. During daylight hours they may be found hiding under surface objects, dried leaf litter, boards, rocks, or ground crevices.
Hardwood beetles are predators, feeding on insects they are able to capture with their mandibles. They are particularly fond of ants and their larva. It is common to collect adult beetles with ant heads still attached to a variety of appendages! Rather than specializing on certain species for prey, the adults are opportunistic feeders. In short, they are good "pests" to have around so long as the landscape does not include hardwood trees such as magnolia and oak.