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Photo#18548
Prionus californicus - male

Prionus californicus - Male
Folsom, Sacramento County, California, USA
May 27, 2005
Size: about 42 mm as adult
During a March visit to California, this beetle was taken as a grub that popped out of an up-rooted stump at the Folsom City Zoo, Folsom California. My sister is the zookeeper there and gave me the grub, which I brought back on the plane to New Hampshire in a pill vial in my shirtpocket. I reared the grub on a bed of pulverized rotten wood, feeding it dry puppy food, and recorded its development into an adult beetle. See linked pix.

ID by Michael Caterino, Curator of Entomology, Santa Barbara Museum of Natural History.

Images of this individual: tag all
Prionus californicus - male Prionus californica - Prionus californicus - male Prionus californica - Prionus californicus - male Prionus californica - Prionus californicus - male Prionus californica - Prionus californicus Prionus californica - Prionus californicus Prionus californica - Prionus californicus Prionus californica - Prionus californicus Prionus californica - Prionus californicus

This beetle
I found one of these in Western North Carolina. Are they a pest to trees? Should I report it.

Thanks,
Brian

 
Not this species.
Two points:

This species lives on the West Coast. What you found in North Carolina is no doubt an East Coast member of the same genus.

These beetles infest wood that's already dead, perhaps killed by other beetle species. They therefore pose little problem.

Excellent series, Jim
It's really great having verifiable larval photos for all these species you've been rearing. Just cheering you on. Keep up the good work.

 
Plateback larvae due soon
Another larva-to-imago series will be available soon -- the tan, non-flanged, non-hooked platebacks that several contributors have found. See post of pupae.

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