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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]
Oncopeltus fasciatus, known as the large milkweed bug, is a medium-sized hemipteran (true bug) of the family Lygaeidae. [2] It is distributed throughout North America, from Central America through Mexico and the Caribbean to southern areas in Canada. [2]
Endangered (EN) species are considered to be facing a very high risk of extinction inside. In July 2017, the International Union for Conservation of Nature (IUCN) listed 343 endangered insect species. [1] Of all evaluated insect species, 5.7% are listed as endangered. The IUCN also lists 21 insect subspecies as endangered.
The Western population of the monarch butterfly hit a near-record low with fewer than 10,000 found living in California ... to list the butterfly as an endangered species. ... that milkweed leaves ...
California milkweed: Native to central and southern California: Asclepias cordifolia: Heart-leaf milkweed: Native to the Sierra Nevada and Cascade Range up to 2,000 m (6,600 ft). Asclepias cryptoceras: Pallid milkweed: Native to the western United States. Asclepias curassavica: Scarlet milkweed, tropical milkweed, bloodflower, bastard ipecacuanha
Asclepias californica is native to California and northern Baja California. It is a flowering perennial with thick, white, woolly stems which bend or run along the ground. The plentiful, hanging flowers are rounded structures with reflexed corollas and starlike arrays of bulbous anther
A monarch butterfly feeding on milkweed. (Shutterstock) The U.S. Fish and Wildlife Service is pushing for added protections for the monarch butterfly after seeing a population decline of about 80%.
Lygaeus kalmii kalmii Stal, 1874 – western small milkweed bug. Range includes Arizona (where it is very common in almost every sandy-grassy patch) and California, though California milkweed bugs are somewhat rare. The western subspecies has white spots and are seen with milkweed in bushy dry areas, but only for feeding, and in wet areas to ...