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Species Chrysolina quadrigemina - Klamath Weed Beetle

Klammath Weed Beetle - Chrysolina quadrigemina Klamath Weed Beetle - Chrysolina quadrigemina Flea beetles? - Chrysolina quadrigemina Klamath Weed Beetle - Chrysolina quadrigemina - male Is this a ladybug? - Chrysolina quadrigemina Is this a ladybug? - Chrysolina quadrigemina Phalacridae? - Chrysolina quadrigemina Phalacridae? - Chrysolina quadrigemina
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Longhorn and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Chrysomelinae
Tribe Chrysomelini
Subtribe Doryphorina
Genus Chrysolina
No Taxon (subgenus Hypericia)
Species quadrigemina (Klamath Weed Beetle)
Explanation of Names
Chrysolina quadrigemina (Suffrian 1851)
Range
intoduced in n. US and Can. - Map (1)(2), native to Europe
Food
host: St. John's wort (Hypericum perforatum), and other Hypericum species.
Life Cycle
Adults emerge from pupal cell in soil in the spring. One generation a year.
Remarks
Introduced from Australia in 1944 to combat Klamath weed (it could not be obtained from Europe because of war).
Print References
Harris, P., Peschken, D., and Milroy, J. 1969. The status of biological control of the weed Hypericum perforatum in British Columbia. Can. Entomologist, 101: 1-15.
Holloway, J. K., and Huffaker, C. B. 1951. The role of Chrysolina quadrigemina in the biological control of Klamath weed. J. Econ. Ent. 44: 244-7.
Hoebeke, E.R. 1993. Establishment of Urophora quadrifasciata (Diptera: Tephritidae) and Chrysolina quadrigemina (Coleoptera: Chrysomelidae) in portions of eastern United States, Ent. News, 104: 143-152.
Internet References