Insects and Spiders - native

Prionus californicus on Jul 28, 2020

Originally reported as Prionus californicus

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

It looks like a "cucaracha" but searching the internet, it looks like a prionus californicus.


Dear Delia, unfortunately I don't see any images of your "cucaracha". Oregon does have cockroaches, but you might be on the correct path with Prionus californicus. It is a longhorned beetle of the family Cerambycidae. It is a native beetle and not harmful to us. Its larvae feed on firs that may be weakened or sick. Sometimes, insects can get attracted by lights and that is how you find them close to your house or sometimes they make it inside, but they are harmless.
Thank you, Helmuth Rogg

Helmuth Rogg
July 28, 2020, 12:43 p.m.

Dear Delia, definitely Prionus. Looks like a male with serrated antenna.
Cheers, Helmuth

Helmuth Rogg
July 28, 2020, 3:30 p.m.