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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) » Leaf Beetles (Chrysomelidae) » Skeletonizing leaf beetles (Galerucinae) » Galerucini » Trirhabda » Trirhabda geminata

Species Trirhabda geminata

Classification · Size · Range · Habitat · Print References · Internet References · Works Cited
Encelia Leaf Beetle -- larva - Trirhabda geminata leaf beetle - Trirhabda geminata leaf beetle - Trirhabda geminata Blister Beetle? - Trirhabda geminata Blister Beetle? - Trirhabda geminata Leaf Beetle on Encelia - Trirhabda geminata Leaf Beetle on Encelia - Trirhabda geminata Trirhabda which? (I am only following instructions.) - Trirhabda geminata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Galerucinae (Skeletonizing leaf beetles)
Tribe Galerucini
Genus Trirhabda
Species geminata (Trirhabda geminata)
Size
5.5-7mm
Range
CA, AZ
Habitat
Dry chaparral, desert scrub, and coastal sage scrub, where Encelia farinosa (Brittlebush) occurs.
Print References
(1)
A photo of this species can be found in the cited field guide (Plate 272).

A paper on the special resistance of T. geminata to encecalin (a toxic substance in Encelia farinosa):
Kunze, A., Aregullin, M, Rodriguez, E., Proksch, P. Fate of the chromene encecalin in the interaction of Encelia farinosa and its specialized herbivore Trirhabda geminata. 1996. J. Chem. Ecol. 22:3, 491-498.
An abstract of this paper is available on the internet; see below.
Internet References
1
Works Cited
1.Field Guide to Beetles of California
By Arthur V. Evans and James N. Hogue
Contributed by Hartmut Wisch on 2 December, 2006 - 1:02am
Last updated 16 December, 2006 - 11:27am

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