tim54's picture

Elm Sawfly Larvae

Observed: 27th September 2008 By: tim54

First time I've seen one, found in my garden last year, still hasn't hatched yet, but still alive in the cocoon.

    Likely ID
    a sawfly (Cimbex connatus)
    Confidence: It's likely to be this, but I can't be certain.
Species interactions

No interactions present.

Species with which a sawfly (Cimbex connatus) interacts


the naturalist man's picture


Hello Tim and welcome to iSpot.

Could you tell me where in the world you live? The only reason I ask is that Elm sawfly (Cimbex americanus) is an American species. If you are in Britain it is more likely to be the similar Birch sawfly (Cimbex femoratus).

Graham Banwell

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tim54's picture


I live in Milton Keynes, I found it on Italian Elder. The Birch sawfly larvae seems smaller in comparison to the Elm sawfly larvae.

charlieb's picture


What is that it's sitting on?

Martin Harvey's picture


I wonder if you mean Italian Alder (rather than elder), in which case this fits well for another related species, Cimbex connatus, which is the only one of the genus that is listed as feeding on alder. The markings, especially the additional row of black spots halfway up the side of the body, are also more like C. connatus than C. femoratus.

There is a great set of photos of sawfly larvae on the Sawfly egroup:

(but I think you'll need to register with Yahoo and apply to join the egroup before you can see them)

Entomologist and biological recorder