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Photo#107713
Phyllotreta sp. - Phyllotreta striolata

Phyllotreta sp. - Phyllotreta striolata
near Dover Plains; 41.44°N, 73.63°W, Dutchess County, New York, USA
June 12, 2005
Size: 2mm
Found on radish (Raphanus). I got this beetle as far as Phyllotreta. Any idea what species it might be?

Images of this individual: tag all
Phyllotreta sp. - Phyllotreta striolata Phyllotreta sp. - Phyllotreta striolata

Moved
Moved from Phyllotreta.

Phyllotreta food habits
Most species have specialized upon plants from tha cabbage family (Brassicaceae), without being very tasty within it. So, as a rule, you may expect most Phyllotreta on a variety of these plants.

Phyllotreta zimmermani
In the key here:
http://www.ag.auburn.edu/aaes/communications/beetles/phyllotreta.htm
I end up with P. zimmermani which is also known from Radish (Raphanus sativus). Seems like a good fit

 
not sure
thanks for the key! But I worry that it describes zimmermani as being 2.5-2.8mm and striolata as being 2.0-2.5mm, which seems closer to this specimen (although there's probably a 0.5mm margin of error in my measurement).

 
you´re right - I went wrong in the key; found pictures now
I seem to have misinterpreted the term ¨straight baso-medially¨ and saw my misidentification confirmed in the hostplant.
It seems the originally european P. striolata is now found on Radish too.
compare: http://www.biol.uni.wroc.pl/cassidae/European%20Chrysomelidae/Iconography/Phyllotreta%20striolata.jpg
which also shows the sexual variation in size (thanks Boris for trying to back me up, but it seems I was wrong anyway...)

 
please compare male sexual ch
please compare male sexual characters described in the linked page - may reduce incertainty.

 
??
Boris, what linked page?

 
ahh, sorry
not really linked! compare below, and copy, then browse . . .

 
Phillip posted
this link earlier.

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