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Species Chrysolina quadrigemina - Klamath Weed Beetle

Klamath Weed Beetle - Chrysolina quadrigemina Flea beetles? - Chrysolina quadrigemina Klamath Weed Beetle - Chrysolina quadrigemina - male Klamath Weed Beetle - Chrysolina quadrigemina - male Beetle - Chrysolina quadrigemina - female Is this a ladybug? - Chrysolina quadrigemina Beetle - 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
native to Europe(1), intoduced in NA
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).
Internet References