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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Long-horned and Leaf Beetles (Chrysomeloidea) » Longhorned Beetles (Cerambycidae) » Prioninae » Callipogonini » Ergates » Ponderosa Pine Borer (Ergates spiculatus)
Photo#151667
Large beetle - Ergates spiculatus
Copyright © 2007 braney

Large beetle - Ergates spiculatus
Aptos, Santa Cruz County, California, USA
September 1, 2007
Size: 3"
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Contributed by braney on 13 October, 2007 - 9:27am
Last updated 13 October, 2007 - 5:53pm

Ponderous borer.
I am so envious! I've never seen a live one. This is an adult "ponderous borer," Ergates spiculatus. The huge larvae bore in roots of trees. The action of the larval jaws inspired the invention of the chainsaw, by the way. Adults are sometimes attracted to lights at night.
… Eric R. Eaton, 13 October, 2007 - 2:58pm login or register to post comments

 
thanks
I've either seen two of them, or the same one
twice a few days apart. Both times I found it
between two closely spaced rounds of a 30-year old
Monterey Pine that I had to have cut down because
it had pitch canker.
… braney, 13 October, 2007 - 3:03pm login or register to post comments

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