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Species Tetraopes tetrophthalmus - Red Milkweed Beetle

Milkweed borer - Tetraopes tetrophthalmus Red and black-spotted Beetle - Tetraopes tetrophthalmus Red Milkweed Beetle - Tetraopes tetrophthalmus - male - female Red Milkweed Beetle - Tetraopes tetrophthalmus Red Milkweed Beetle - Tetraopes tetrophthalmus Tetraopes tetrophthalmus - male - female Cerambycidae: Tetraopes tetrophthalmus - Tetraopes tetrophthalmus Red Milkweek Beetle (Tetrapoes tetrophthalmus)  - Tetraopes tetrophthalmus
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 Chrysomeloidea (Long-horned and Leaf Beetles)
Family Cerambycidae (Long-horned Beetles)
Subfamily Lamiinae (Flat-Faced Longhorns)
Tribe Tetraopini
Genus Tetraopes (Milkweed Longhorns)
Species tetrophthalmus (Red Milkweed Beetle)
Synonyms and other taxonomic changes
tetraophthalmus (spelling)
Explanation of Names
Tetraopes tetrophthalmus (Forster 1771)
tetrophthalmus = 'four-eyed' (each compound eye is completely divided)
8-15 mm(1)
combination of broad, disk-shaped hump (callus) on pronotum, strong elytral spots, especially the broad subhumeral spot, and unringed antennae are distinctive for this species(1)
e. NA (QC-MB-ND to GA-TX-CO)(2)(3)
very common where host plant present
Host: milkweed (Asclepias spp., esp. A. syriaca) and dogbane (Apocynum)(1); other sources maintain that T. tetrophthalmus is associated solely with A. syriaca(4)
Life Cycle
Eggs laid on stems near ground or just below surface; larvae bore into stems, overwinter in roots, and pupate in spring; adults emerge in early summer(5)
Print References
Rasmann S., Agrawal A.A. (2011) Evolution of specialization: a phylogenetic study of host range in the red milkweed beetle (Tetraopes tetrophthalmus). Am Nat. 177: 728-737 (Full text)
Works Cited
1.Field Guide to Northeastern Longhorned Beetles (Coleoptera: Cerambycidae)
Douglas Yanega. 1996. Illinois Natural History Survey.
2.Beetles of Eastern North America
Arthur V. Evans. 2014. Princeton University Press.
3.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.
4.The timing of insect/plant diversification: might Tetraopes (Col.: Cerambycidae) and Asclepias (Asclepiadaceae) have co-evolved?
Farrell B.D., Mitter C. 1998. Biol. J. Linn. Soc. 63: 553–577.
5.National Audubon Society Field Guide to Insects and Spiders
Lorus and Margery Milne. 1980. Knopf.