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Sawfly - Dolerus unicolor - female

Sawfly - Dolerus unicolor - Female
Kunkletown, Monroe County, Pennsylvania, USA
April 11, 2010

thanks a lot, Dave
the color dimorphism means that the male photos are doomed to sit namelessly on the genus page while their carefully segregated mates adorn the species page

Moved from ID Request.

This is Dolerus unicolor - a very pretty species. The color pattern is right, and it is the only N. Amer. Dolerus with metallic reflections. Dolerus unicolor was described from a male in 1805 by Palisot de Beauvois. The male is all black (or slightly metallic like the black parts of the female); thus, the name "unicolor" fits perfectly well. Actually Beauvois had a female but thought it was a different species and called it "thoracinus", a name, of course, now a junior synonym of unicolor.

Looks a bit like Dolerus unicolor

Might at least be a close relative. Let's see what the experts have to say.

beautiful sawfly, and well shot, too! Ken, as always, nailed it
pretty sure the two pix show conspecific individuals, but the onle already IDed as D. unicolor (nothing unicolorous about it!) must be expert-checked before we can apply the name to another image; Dolerus are easy to recognize but very hard to ID past genus from images (fine details of ovipositor serration are used to separate most spp.)

Yeah, I wondered about that name, too...
but all of the individuals on that page share pretty much the same (two-colored) pattern. Go figure.

they may well be IDed correctly
one of those cases where the specif. epithet is badly misleading; such examples abound

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