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Unidentified sawfly larvae on raspberry

Here's another installment in my series of notes sorting unidentified sawfly larvae in the BG gallery by host plant, this one for raspberry (Rubus). I am using the common name "raspberry" in a generic sense here because the genus Rubus actually contains raspberries, blackberries, and dewberries. Several of the photos show the white underside of a leaf, a trait possessed by at least two common species: Black Raspberry (R. occidentalis) and Red Raspberry (R. idaeus). There were a total of sixteen postings, which I have arranged in two pairs, a sextet, and six singletons below. The first pairing was suggested by commenters on those postings, but the next two groupings were created by me based on superficial resemblance, which should be be regarded as a very "soft" grouping (I am a mere botanist, not an entomologist).

A commenter suggested Monophadnoides geniculatus, citing this reference, but see this note.

I paired these, thinking that the specimen in the first photo had a white, waxy coating that was absent in the second.

Newfoundland..........New Brunswick.........New Hampshire........North Carolina..........Washington............Washington

As with my previous notes for other species (listing in "See Also" section), I am providing these sorted images in hopes that Dr. Dave Smith or other experts will find them useful, possibly leading to identifications.


On blackberry:

On "white-stemmed raspberry":

New Hampshire

wonder job!
can't say it enough, John.

Another one

plant is red raspberry
I have a gazillion photos of the leaves with various other insects on them from the same day, if you'd like to see more of the plant.

All these larvae had a dark brown spot on the top of the head, I'll poke around the other sawflies on raspberry and see if any of them are similarly marked.

Seven additions
Based on recent host plant IDs and inclusion of previously overlooked images, I have added seven images to the compilation:

I also revised the text to reflect these additions.

I added a new photo to the third row:

I also edited the text to reflect the new arrangement.

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