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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Scarab, Stag and Bess Beetles (Scarabaeoidea) » Scarab Beetles (Scarabaeidae) » May Beetles and June Bugs (Melolonthinae) » Melolonthini » Lined June Beetles (Polyphylla) » Ten-lined June Beetle (Polyphylla decemlineata)
Photo#198006
Striped June Bug? - Polyphylla decemlineata
Copyright © 2008 beancounter

Striped June Bug? - Polyphylla decemlineata
Kelowna, Okanagan, British Columbia, Canada
July 5, 2008
Size: Approx 1.25 inches long
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Contributed by beancounter on 6 July, 2008 - 12:13am
Last updated 7 July, 2008 - 3:57pm

Curious....
I just found one out on my porch tonight, but realized it was struggling and on closer inspection (and much hissing from the poor thing thinking I was harming it) I realized one antenna was completely gone and the other was only partially there from what I can see from the pictures I've found. It wasn't there when I went back out to look for it, but is this something that will kill the poor insect?
… Cartiff, 9 May, 2009 - 2:09am login or register to post comments

does it hiss???
We get these in north Seattle, my son loves them and will keep them in a container for a day or two at a time. It took me a while but I also came to the conclusion of striped june bug... The most interesting thing we have found is that if you pick them up, or try and move them the will hiss/squeek. very fun if you are 6 years old!
… Melmore138, 6 July, 2008 - 2:14am login or register to post comments

 
Yes to all.
This is indeed a "ten-lined June beetle," Polyphylla decimlineata, and a male (females have very tiny antennae compared to the males). The "hissing" and "squeaking" is produced when the beetle rubs the top of its abdomen against the inside surface of those striped wing covers. When an insect produces sound by rubbing one body part against another, it is called "stridulation."
… Eric R. Eaton, 6 July, 2008 - 6:14pm login or register to post comments

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