This Spring, I had a horde of ladybug-like beetles chomping on my Coreopsis. I think they are Calligrapha californica coreopsivora -- AKA the Coreopsis beetle, but it would be useful to be able to find out more about their biology so I might be able to control them using integrated pest management techniques. However, I am unable find any good biological information of this insect. I eventually just started picking them out with tweezers, but their ability to reproduce or come in from unknown sources finally defeated me and they overwhelmed the two Coreopsis plants. Does anyone have any information on these or could they point me towards some literature that might discuss the biology of these pests?