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Photo#20933
Klamath Weed Beetle - Chrysolina quadrigemina

Klamath Weed Beetle - Chrysolina quadrigemina
Harvard, Worcester County, Massachusetts, USA
June 17, 2005
Size: 6mm
These beetles are all over one of the weed plants(ragweed?), devouring all it's leaves.

Compare:
I think it's the Klamath Weed Beetle, Chrysolina quadrigemina, doing what it was imported to do, eat and control St. Johnswort, aka Klamath Weed, which bears small yellow flowers.

 
Klamath Weed Beetle
It had a nice green sheen just like yours, but the color didn't come through in the picture like yours did. Thanks Jim.

 
My green-boosting lens :-)
Question though: Was the leaf it's sitting on for this photo from the plant upon which it was feeding? That's not a St. Johnswort leaf.

 
Posed
No I posed it on a different lest to try and get a better shot.

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