Giant beetle

Asked July 18, 2020, 9:24 AM EDT

Good morning,

I found this giant beetle resting on the sidewalk near my backdoor. See photo.

I gently nudged it with the side of the glass and it made a loud hissing noise! It is still under the glass.

What is it? What should I do with it?

Denver County Colorado

1 Response

That is a Tenlined June Beetle (Polyphyla decemlineata), the largest scarab beetle found in Colorado and notorious for hissing when handled. Read more about it here: