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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 » Prionini » Prionus
Photo#30563
Tile-Horned? 2 - Prionus
Copyright © 2005 CyndiA8

Tile-Horned? 2 - Prionus
Prescott, Yavapai County, Arizona, USA
September 4, 2005
Size: over 3 inches
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Contributed by CyndiA8 on 5 September, 2005 - 1:21pm
Last updated 9 June, 2006 - 6:13pm

Prionus in AZ
There are many spp., see updated 'info' page for genus
… Phillip Harpootlian, 5 July, 2006 - 2:02pm login or register to post comments

Cerambycidae
its a cerambycid, subfamily Prioninae, genus Prionus Im guessing and with the narrow antennae more than likely a female. picture is a bit rough on my screen
… Guy A. Hanley, 6 September, 2005 - 10:57pm login or register to post comments

 
Consider Derobrachus
The picture is a bit fuzzy but if it really is over three inches then wouldn't it have to be Derobrachus geminatus. I don't think any of our Prionus sp. are quite so large.
… Frank Guarnieri, 27 October, 2005 - 9:36pm login or register to post comments

 
On second thought...
Is this the same beetle as in image 30562? I didn't notice that they might be the same. That silhouette does look more like Prionus than Derobrachus. Do the western Prionus get that big? Our biggest in the east are around 1 1/2 to 1 3/4 inch although I've heard "fish stories" of 2 inch specimens.
… Frank Guarnieri, 29 October, 2005 - 4:32pm login or register to post comments

 
Prionus californicus?
I found an image on forestryimages.com by Donald Owen of a Prionus californicus next to ruler that really is 3+ inches long (incredible!) so I guess it is possible that this is a California Root Borer.
… Frank Guarnieri, 4 November, 2005 - 8:02am login or register to post comments

 
Female then
Males have thicker, spurred antennal segments. See guide.
… Jim McClarin, 4 November, 2005 - 5:30pm login or register to post comments

Nope.
Those are not tile-horned antennae.
… Jim McClarin, 6 September, 2005 - 5:54am login or register to post comments

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