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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 » Prionus pocularis
Photo#41636
Big Saw-Toothed Rack on this Prionid - Prionus pocularis
Copyright © 1989 Stephen Cresswell

Big Saw-Toothed Rack on this Prionid - Prionus pocularis
Chincoteague, Accomack County, Virginia, USA
August 1, 1989
What a lurid photo! A red beetle on a red picnic table. I love the antennae. I'm thinking maybe this is a younger adult beetle that later would darken?

I'm debating Prionus laticollis versus P. pocularis. Both seem to have this style of antennae, and this pattern of points on the sides of the pronotum. I wish the surface of the elytra showed better, as that is one distinguishing key (punctate versus wrinkled looking). Another key is the distance between the eyes, but I'm debating whether the distance in my photo is more like P. laticollis or P. pocularis. Help appreciated!
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Contributed by Stephen Cresswell on 26 January, 2006 - 4:18pm
Last updated 5 July, 2006 - 4:16am

looks like pocularis, male
from Virginia, about the only thing it can be
… Phillip Harpootlian, 2 July, 2006 - 5:00pm login or register to post comments

 
Range
Moving to the Prionus pocularis page.

Is P. laticollis not found in Virginia? If not, our BugGuide IDs may need some revision. Right now the Data tab map shows BugGuide entries for P. laticollis from Maryland, West Virginia, Virginia, and North Carolina. (Also New Jersey and points north.)

Alas I had to give my Downie & Arnett back to the interlibrary loan people!

Thanks for your help on this one, Phillip.
… Stephen Cresswell, 5 July, 2006 - 4:14am login or register to post comments

 
laticollis range
laticollis ranges over most of the eastern US, but evidently hasn't been seen in Florida for awhile - not uncommon in SC though. See updated 'info' page.
… Phillip Harpootlian, 5 July, 2006 - 7:00am login or register to post comments

Not laticollis
I think laticollis is Latin for "wide neck," meaning wide pronotum, and the pronotum is not proportionally wide enough on this beetle.

As for the color, it's my experience with rearing Ortho*soma brun*neum and Prionus califor*nicus that they don't do anything but hide out after emergence from pupa till their abdomen shrinks, by which time they are fully colored and hardened. I imagine the same is true for other prionids, so this one is probably at full color.
… Jim McClarin, 28 January, 2006 - 8:07am login or register to post comments

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