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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 ...
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]
Last shows beetles internals through transparent exoskeleton. Finally the mature larvae move to the soil to pupate. After a few weeks, adults emerge to start the next generation eating the same host plants as the larvae. An adult may displace a monarch larvae to feed at the same site. [3] Milkweed leaf beetle adult on milkweed
Adults are active between April and August. [3]A study has shown that this species exhibits maternal care of larvae; they were observed guarding larvae whilst feeding on Witheringia heteroclita in Costa Rica [1] This was a response to predatory threats, as worker ants of Paraponera clavata were observed carrying larvae to their nest.
The Lygaeidae are a family in the Hemiptera (true bugs), with more than 110 genera in four subfamilies. 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.
The beetle is 9 to 12 mm (0.35 to 0.47 in) long and is yellow to bright red with black spots. It is one of the largest leaf beetles native to North America. The name Argus comes from the mythical Greek giant Argus Panoptes , who was sometimes depicted with 100 eyes, because the beetle is able to stretch out its red head beyond its pronotum , as ...
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 ]
All species of Chryochus feed on plants in the Apocynaceae (dogbane) and Asclepiadaceae (milkweed) families. A small mutation has allowed the two North American species, C. auratus and C. cobaltinus , in particular to feed on the plant species containing cardenolides , while all other species of the genus feed on plant species without cardenolides.