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Photo#168798
Web-spinning Sawfly - Onycholyda luteicornis

Web-spinning Sawfly - Onycholyda luteicornis
Athol, Worcester County, Massachusetts, USA
June 11, 2006

Identified by Andreas Taeger
on my pbase site. Neartica lists luteicornis under Onycholyda and not for Pamphilus, so I'm going with Onycholyda for the genus.
Moved from Pamphilius.

Thanks Richard
It looks like this genus is well represented up here. The UNH website lists 10 species of Pamphilius.

Pamphilius sp. (Pamphilidae)
Seemingly a female.
More complex forewing venation and many-segmented antennae distinguish these "web-spinning Sawflies" from otherwise similar Tenthredininae. Gaster is also much more flattened, with typically sharp edges.
If not certain of the gender, I'm quite sure of the genus (no page yet "defined" on BG), because several Palaearctic species are wirtually identical tho this one insect.

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