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Photo#150152
Leaf Beetle - Trirhabda adela

Leaf Beetle - Trirhabda adela
Wachusett Mountain, Worcester County, Massachusetts, USA
July 31, 2007
Host plant is Boneset (Eupatorium sp.).

Images of this individual: tag all
Leaf Beetle - Trirhabda adela Leaf Beetle - Trirhabda adela

Moved
Moved from Trirhabda.

head shot
not the most easy angle; a head shot would be better. Probably it is Trirhbda adela

 
No head shot
I added a slightly different angle (and slightly blurry):


Next summer I'll be more willing to wade into undergrowth in search of better bug pictures.

 
Trirhbda adela
thanks for the extra photo. The spot on the head better visible on this one and seems to confirm Trirhada adela. Compare here

 
Why not T. canadensis?
How you can tell it is T. adela and not the similar-looking T. canadensis? Location? Plant?

There is currently no T adela page here. If you get one created I'll move the photo. Otherwise I guess it lives under the genus.

 
not canadensis
the difference is in the spot on the head. T. canadensis has only a small square spot, while the spot of adela is bigger and less squared. T. borealis is also similar but has the spot even more elongated. The best way to compare these three is the North Dakota site I linked to above.
Allthough I have identified several T. adela and T. borealis in the guide there have no pages been made by any editor for them yet.

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