Brown Prionid

Long, sedentary beetle in NJ
July 4, 2010
I trolled BugGuide with no success. This critter, with a length of about 3 or 4cm, stayed stationary all evening. It was about 70F with moderate humidity on a clear night.
Thanks, and happy 4th!
Greg in NJ
Central NJ

Brown Prionid

Good Morning Greg,
Your beetle is the Brown Prionid,
Orthosoma brunneum, and it can be recognized, according to BugGuide, by “Light brown, sides of elytra parallel. 11-segmented antennae, rounded, never flattened.

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BugMan aka Daniel Marlos has been identifying bugs since 1999. is his passion project and it has helped millions of readers identify the bug that has been bugging them for over two decades. You can reach out to him through our Contact Page.

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