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For Insects, Spiders & Their Kin
For the United States & Canada

Species Cysteodemus armatus - Inflated Beetle

Cysteodemus armatus Cysteodemus armatus Cysteodemus armatus Ant Like - Cysteodemus armatus Black and white beetle looking 3/8/2017 - Cysteodemus armatus Cysteodemus armatus? - Cysteodemus armatus Cysteodemus armatus Inflated Blister Beetle - Cysteodemus armatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Tenebrionoidea (Fungus, Bark, Darkling and Blister Beetles)
Family Meloidae (Blister Beetles)
Subfamily Meloinae
Tribe Eupomphini
Genus Cysteodemus (Desert Spider Beetles)
Species armatus (Inflated Beetle)
Explanation of Names
Cysteodemus armatus LeConte 1851
white to yellow-brown incrustation:
Colorado and Mojave Deserts(1)
Feb-Jun (earlier in Colorado Desert than in n. Mojave Desert)(1)
Recorded food plants of adults: most commonly Larrea tridentata, but also a number of other plants (Acamptopappus sphaerocephalus, Chaenactis, Geraea canescens, Palafoxia arida, Gilia, Loeseliastrum matthewsii, Tiquilia). While creosote leaves are dependable even in the driest of years, other plants are likely preferred when available.(1)
Life Cycle
Larvae in subterranean nests of solitary bees(2)
See Also
C. wizlizeni: dorsum shining, deep metallic blue/green/violet, lacking incrustation. Chihuahuan Desert.
Print References
LeConte, J.L. (1851). Descriptions of new species of Coleoptera, from California. Annals of the Lyceum of Natural History of New York, 5: 125–184. (Brief original description, in Latin, on pg. 158)
La Rivers, Ira (1938). Notes onCysteodemus in southern Nevada. Pan-Pacific Entomologist, 14(3):124-128. (Full Text)
Leppla N.C. (1976) Habits of the hypertrophic blister beetle, Cysteodemus armatus. The Southwestern Naturalist 21: 49-54 (Full Text)
Pinto, J.D. 1984. A taxonomic review of Cysteodemus LeConte, Phodaga LeConte and Pleuropasta Wellman (Coleoptera: Meloidae: Eupomphina) with a new generic synonymy. Proceedings of the Entomological Society of Washington, 86: 127-143. (Full Text
Internet References
Type - MCZ, Harvard
Works Cited
1.A taxonomic review of Cysteodemus, Phodaga, and Pleuropasta with a new generic synonymy
Pinto J.D. 1984. Proc. Entomol. Soc. Wash. 86: 127-143.
2.Field Guide to Beetles of California
Arthur V. Evans and James N. Hogue. 2006. University of California Press.