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Sawfly Larva? - Neurotoma edwardi

Sawfly Larva? - Neurotoma edwardi
Canton, Norfolk County, Massachusetts, USA
August 31, 2005
There were a few of these nest of larva in a small cherry sapling. Are these sawfly larva, and if they are, any guess on genus?

The leaves look more like poplar
to us than cherry, so we were wondering if these might be related to the poplar tentmaker, Clostera inclusa, but can't find any images or descriptions of the early instars. Wagner does mention C. strigosus which he says lacks the middorsal knobs and he says there are five species of Clostera occuring in eastern Canada. Will try to find out more. Maybe Tony Thomas will know more.

These larvae look
too shiny to be a Clostera sp. My guess would be a Webspinning Sawfly, Family Pamphiliidae

It looks a bit like this Pamphiliidae larva, just a different color. It also looks a lot like Troy's pictures on this page.

Oops, that's poplar alright. I was finding these quite a few times, in nests just like this. A tentmaker caterpillar would make sense.

I don't know what they are
but my gut says not sawfly?

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