WebThe leaf beetles Chrysochus cobaltinus and C. auratus are sister species that have a 75 km wide zone of secondary contact in the Yakima River Valley, and are easily distinguishable by their differing elytral color and antennal morphology (Peterson et al., 2001, in press). They co-occur on patches of dogbane {Apocynum cannabinum) their WebAug 21, 2006 · Females of the leaf beetle, Chrysochus cobaltinus, are extremely polyandrous, providing an opportunity to examine the factors influencing the evolution of such behaviors. We compared the fecundity and longevity of singly mated females, females that mated multiple times with the same male, and females that mated multiple times …
Chrysochus - Wikipedia
WebOur sequence-based phylogeny estimate allows us to reconstruct historical diet evolution in Chrysochus. Starting from an original association with Asclepiadaceae, the common ancestor of C. auratus and C. cobaltinus included Apocynaceae in its diet. There are at least eight described species in Chrysochus. Six are found in the Palearctic realm, and only two are found in North America. • Chrysochus asclepiadeus (Pallas, 1773) – widespread across Europe, also found in Kazakhstan and Turkey • Chrysochus auratus (Fabricius, 1775) – Dogbane beetle; found in eastern North America portishead mot garages
Steranie E. Locke Semantic Scholar
Chrysochus cobaltinus, the cobalt milkweed beetle or blue milkweed beetle, is a member of the diverse family leaf beetles (Chrysomelidae). It occurs in the Western United States and British Columbia. See more C. cobaltinus has an iridescent cobalt-blue exoskeleton. Both sexes range from 6–9 millimetres (0.24–0.35 in) in length, with clubbed antenna. The elytra usually have more or less evident epipleura, changing within the varying … See more C. cobaltinus is similar to click beetles in being able to launch themselves a couple times the length of their body. Both adults and … See more C. cobaltinus ranges in High Plains from British Columbia south through Washington, Idaho, Montana, Oregon, California, Nevada, Utah, and Colorado to Arizona and New Mexico. … See more Adults emerge in early summer and persist on milkweed plants in patches for approximately six weeks. Females are highly polyandrous; males engage in extended periods of … See more Webcobalt milkweed beetle, (Chrysochus cobaltinus), also called blue milkweed beetle, member of the insect subfamily Eumolpinae of the leaf beetle … WebFor example, in the cobalt milkweed beetle (Chrysochus cobaltinus), the male rides on the back of the female for several hours. By engaging in this behaviour, the male sacrifices time he could use to locate a new mate in favour of preventing her from copulating with other males before she can lay her eggs. portishead music to f to