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Unidentified sawfly larvae on pine

Here's another note based on sorting unidentified sawfly larvae in the BG gallery by host plant, this time pine (Pinus). Several species of pine and several several species of sawfly were in this collection of photos from Newfoundland/Labrador, Maine, Delaware, North Carolina, South Carolina, Florida, and Washington. In some cases, the pine species was not identified, but in the case of Lodgepole Pine, I determined the ID from the photo. In the cases of the photos featuring Palafox, Serenoa, and Equisetum as the apparent host plant (5th and 6th rows), I took the liberty of speculating that the larva may have strayed from its "true" host. In cases where it was provided by the submitter, the pine ID was given as the common name, to which I added the scientific name. For cases in which commenters offered an ID for the sawfly larvae with a brief explanation or weblink, I listed it next to the photo and pine ID.

White Pine (P. strobus), commenter suggested Diprion similis.

Loblolly Pine (P. taeda), commenter suggested Neodiprion, specifically N. abietis.

Unspecified Pine, commenter suggested Neodiprion, specifically N. abietis.

Unspecified Pine, commenter suggested Neodiprion.

Unknown Pine(?), commenters suggested Neodiprion lecontei; occurrences on palafox herb and saw palmetto possibly incidental

Lodgepole Pine (P. contorta); I speculate that the specimen in the second photo strayed from a tree near the horsetail plant.

Red Pine (P. resinosa); these two photos at same locality/same date by same submitter.

Unspecified Pine

As with my previous notes for grass, yellow loosestrife, rose, and raspberry, I am providing these sorted images in hopes that Dr. Dave Smith or other experts will find them useful, possibly leading to identifications.

on Pitch Pine in Massachusetts

These pages will be most helpful if they are easy to find. I've added links to them here--please add new links as you continue to add new pages.

Also, for this one

you may well be right that it fell from a nearby pine, but there are very many sawfly larvae that feed on ferns, and I believe there are some on horsetails as well. I remember reading that sawflies evolved earlier than Lepidoptera, so there are more of them that feed on "primitive" plants such as these.

Ha, ha, ha
You beat me to it. I started doing the same thing to find out that I got there too late. Great minds think alike : )

Horsetails, sawflies, and links
Thanks for that caution about sawflies and horsetails, Charley. To follow up, I just conducted a Google Search for "Equisetum sawfly" which produced these three results:

BugGuide posting for Dolerus tejoniensis

BioImages Virtual Field Guide (UK)
This source lists several species of Equisetum-feeding sawflies in the genera Dolerus and Loderus in England.

The Entomologist, Volume 14, 1881
Displayed on Google Books, this is a note by Edward Fitch concerning Dolerus palustris and Equisetum in England.

Thanks also for the prompt to add links to the taxon page.

And don't forget...
Catalog of Hymenoptera in America North of Mexico
By Karl V. Krombein, Paul D. Hurd, Jr., David R. Smith, and B. D. Burks
Available online here.

It has a wealth of host plant information throughout

Volume 3
All the sawfly information is in Volume 1, but Volume 3 has a host plant index, which is extremely helpful.

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