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Chrysolina quadrigemina/hyperici
2222_2463 Photo added 2013-02-09

Chrysolina quadrigemina/hyperici (Coleoptera: Chrysomelidae)
Angelo Coast Range Reserve, Mendocino County, California
June 17, 2012

Chrysolina quadrigemina and Chrysolina hyperici are species introduced from Europe to control St.John's-wort. One needs male genitalia to separate the species with certainty.

all photos and text © Joyce Gross