Sawfly larva

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    Showy sawfly larva; unidentified -- white with black squares, 15 mm long. I believe the host plant is Wingstem (shot below) -- it has a four-winged stem. Closest ID I have found is possibly subfamily Allantinae, based on bugguide.net/node/view/196436.

    1. Salamanderdance 82 months ago | reply

      Beautiful shot!

      I love the detail on this . . . we found a ton of these in a goldenrod field last week.

    2. junesbugs 82 months ago | reply

      I have found this one on crownbeard (which has a winged stem).

      www.flickr.com/photos/junesbugs/160315009

      Please let me know if you get an ID for the sawfly. Thanks!

    3. Anita363 82 months ago | reply

      Hostplant is supposed to be very important for sawfly larva ID, so thank you both! June, yep, your guy looks just like mine. The only Verbesina sp we are supposed to have here in NJ is V. alternifolia (Wingstem). Maybe that's what this is, instead of goldenrod? I'm still leaning towards the goldenrod, but I can't be sure. Here's a view; maybe you (or someone else) can help (I left it public so you can click through to the original size):

      Rough-leaved Goldenrod?

    4. Anita363 55 months ago | reply

      I posted this one to BugGuide & indeed got an immediate vote for Wingstem. Stem definitely looks like a better match (I was able to find a pic of the goldenrod stem to compare this time). Habitat is right on too: "Low open and rich woods, alluvial woods near streams": this was on an island in the Delaware River. Wingstem isn't at all widespread in NJ, but PLANTS does list it as present in a couple of counties down by the Delaware there -- and now we know why!

      Now let's hope we can get an ID on our critters ...

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