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Species of beetle From Wikipedia, the free encyclopedia
The red milkweed beetle (Tetraopes tetrophthalmus) is a beetle in the family Cerambycidae.
Red milkweed beetle | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Coleoptera |
Family: | Cerambycidae |
Genus: | Tetraopes |
Species: | T. tetrophthalmus |
Binomial name | |
Tetraopes tetrophthalmus (Forster, 1771) | |
Synonyms | |
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The binomial genus and species names are both derived from the Ancient Greek for "four eyes." As in many longhorn beetles, the antennae are situated very near the eye–in the red milkweed beetle, this adaptation has been carried to an extreme: the antennal base actually bisects the eye (See Fig. 1).
The milkweed beetle, a herbivore, is given this name because it is host-specific to common milkweed (Asclepias syriaca).[1] It has been reported on horsetail milkweed (Asclepias verticillata) in a disturbed site in Illinois.[1]: 81 [2]
Adults feed on the foliage and flowers of the plant, and the larvae feed on the roots.[3][4] Therefore, much like the monarch butterfly, it is thought that the beetles derive some protection from predators by incorporating toxins from the plant into their bodies, thereby becoming distasteful.[5]
These beetles feed by opening veins in the milkweed plant, decreasing the beetles' exposure to latex-like sap.[6]
When startled, the beetles make a shrill noise, while they make a 'purring' noise when interacting with another beetle.[6] The red and black coloring are aposematic, advertising the beetles' inedibility. Red milkweed beetles lay egg-clutches in mid-summer inside the stem base of the milkweed plant.[7]
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