Subject: What’s this bug
Location: Washington DC
April 22, 2015 7:14 am
I have now trapped and relocated two of these near the front wall of our brick row house in washington dc. Both were found by one of our cats. What are they and are they dangerous to cats?
Signature: David McMillen
This is a Hickory Borer, Megacyllene caryae, a Longhorned Borer Beetle in the family Cerambycidae. Larvae in this family are wood borers, and adults often have very strong mandibles that they need to chew to the surface when they emerge as adults. They might provide a painful nip to your cat, but they are not considered dangerous and we feel quite certain the cat will not be harmed. Do you have a hickory tree nearby? According to BugGuide: “larvae mine newly dead hickory, and sometimes other hardwoods.”
Thank you for the quick and informative response. No hickory trees nearby but maybe they wintered in our firewood. We keep a pile inside over the summer and brought in a few of weeks ago.
Emergence from firewood is quite common.