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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Longhorn and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Skeletonizing Leaf Beetles and Flea Beetles (Galerucinae) » Galerucini » Section Coelomerites » Trirhabda » Trirhabda schwarzi
Photo#152558
mystery beetle - Trirhabda schwarzi
Copyright © 2007 Bob Beatson

mystery beetle - Trirhabda schwarzi
Yetman Trail, Tucson Mts., Pima County, Arizona, USA
August 29, 2007
Size: 3 or 4mm
Looks like a little Chrysomelid (Diabrotica) - or possibly Meloidae (Nemognatha)??? Can anyone ID or point me in the right direction?

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mystery beetle - Trirhabda schwarzi mystery beetle - Trirhabda schwarzi
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Contributed by Bob Beatson on 18 October, 2007 - 4:14pm
Last updated 7 July, 2008 - 12:57pm

Do you recall the plant?
The leaf here doesn't look too far off from the host plant Brickelia californica of T. schwarzi. That would reinforce the identification here.
… Aaron Schusteff, 27 December, 2011 - 11:01pm login or register to post comments

Moved
Moved from Trirhabda.
… john and jane balaban, 7 July, 2008 - 12:57pm login or register to post comments

A chrysomelid certainly
Possibly the genus Trirhabda.
… Michael C. Thomas, 13 November, 2007 - 7:39pm login or register to post comments

 
Looks like Trirhabda,
but isn't 3 or 4 mm a little small for them?
… john and jane balaban, 22 March, 2008 - 3:47pm login or register to post comments

 
My estimate
of 3-4mm was just that, an estimate made in the field several hours earlier. It could well have been in the range 4-6mm. I carry a compass with length units along its side. Guess I should start employing it!
… Bob Beatson, 7 July, 2008 - 12:30pm login or register to post comments

 
If this is Trirhabda it keys
If this is Trirhabda it keys out to Trirhabda schwarzi which is 5-7mm long.
… John Randall Watts, 7 July, 2008 - 8:22am login or register to post comments

Definitely Chrysomelidae but not that genus.
Rob will no doubt be much more informative.
… Jim McClarin, 18 October, 2007 - 4:53pm login or register to post comments

 
Thanks Jim,
these little guys confuse me, but good.
… Bob Beatson, 18 October, 2007 - 4:59pm login or register to post comments

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