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Chrysochus cobaltinus, the cobalt milkweed beetle or blue milkweed beetle, is a member of the diverse family of leaf beetles, Chrysomelidae. It is named after its cobalt-blue exoskeleton, which makes it easy to spot and distinguish, and its tendency to feed off milkweed plants. It occurs in the Western United States and British Columbia. [3]
Mating milkweed beetles on common milkweed. The beetle vibrates when it is making a warning noise. A red milkweed beetle cutting milkweed vein to reduce/stop latex pressure before feeding beyond the cut. When startled, the beetles make a shrill noise, while they make a 'purring' noise when interacting with another beetle. [6]
Dogbane beetle Chrysochus brevefasciatus: Pic, 1934 [7] Shanghai, China: Chrysochus chinensis: Baly, 1859 [8] Central, North and Northeast China, Japan, Mongolia and the Russian Far East Chrysochus cobaltinus: LeConte, 1857 Western United States and British Columbia Blue milkweed beetle Chrysochus globicollis: Lefèvre, 1888
The milkweed leaf beetle (Labidomera clivicollis) is a species of leaf beetle from the family Chrysomelidae. [2] It is round bodied, 8–11 mm in length with a black head and pronotum and bright orange to yellow elytra with variable mottled black patches.
The dogbane beetle (Chrysochus auratus), for instance, is very attractive—iridescent blue-green with a coppery tinge, it measures 8–10 mm, and is found on dogbane and milkweed. Some, such as members of the genus Macrocoma , are unusually setaceous and with unusually prominent mandibles for members of the family Chrysomelidae.
dog bane beetle (Chrysochus auratus) Chrysochus auratus, more commonly known as the dogbane beetle, is a leaf beetle primarily found in the eastern United States. The beetle is approximately 8 to 11 mm in length, and possesses an oblong and convex shape. This beetle has two pairs of wings, one of which is a pair of copper colored elytra.
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The family is commonly referred to as seed bugs, and less commonly, milkweed bugs, or ground bugs. [1] Many species feed on seeds, some on sap or seed pods, others are omnivores and a few, such as the wekiu bug, are insectivores. [2] [3] Insects in this family are distributed across the world. [4]