Leaf beetle? - Cerotoma trifurcata

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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) » Luperini » Diabroticina » Section Cerotomites » Cerotoma » Bean Leaf Beetle (Cerotoma trifurcata)

Photo#104051

Copyright © 2007 Steve Scott

Leaf beetle? - Cerotoma trifurcata

Fairfield, Wayne County, Illinois, USA
April 17, 2007
Size: < 1 cm

Caught this one in passing. Looks like he/she just emerged and hasn't fed enough to be colored yet. Thought maybe the spots on the elytra would ring a bell though nothing catches my attention scanning our pages.

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Contributed by Steve Scott on 19 April, 2007 - 11:45am
Last updated 23 October, 2015 - 11:49am

Cerotoma

well it sure is a leafbeetle (in the subfamily Galerucinae). From the antenna I suspect it is Cerotoma. Cerotoma trifurcata is the common species and is variable in colouration. It is however normally red with black spots; nothing like this one.

… Rob Westerduijn, 19 April, 2007 - 12:26pm

you got it

Cerotoma trifurcata - see color forms here and here

now BugGuide has them too! :)

… Tim Moyer, 20 April, 2007 - 10:09am

Hey, Tim

Thanks! That brings our uncertainty to a resounding, whomping end. :)

… Steve Scott, 20 April, 2007 - 10:22am

Thanks

for the thoughts. I raised some Chrysomela last year that came out looking pale and colorless like this so I thought maybe they all do that until they feed.

… Steve Scott, 19 April, 2007 - 4:15pm

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