Sawfly larvae on birch

Walwyn · #1 (**permalink**) 22-06-2010, 09:16 PM

Looking through the yahoo sawfly group the nearest I can find is Croesus latipes. Does anyone have experience of this one before?

poschiavanus · #2 (**permalink**) 23-06-2010, 12:58 PM

It fits the Lorenz and Kraus description: head all black, only near the stigma, prolegs and underside of the thoracic and last 3 abdominal segments pale. They also seem to regard C. latipes as pretty distinctive.

Walwyn · #3 (**permalink**) 23-06-2010, 06:24 PM

Thanks. Lorenz and Kraus is that still available?

poschiavanus · #4 (**permalink**) 23-06-2010, 08:36 PM

Paper copies can still usually be obtained from places like Pemberley Books, but will be expensive.

An electronic version (PDF) was made as part of a symposium volume a few years ago. If you PM me I can suggest how it might be possible to get hold of a copy.

BUT it's very technical and in german and about 400 pages long. I find the top-level and genus keys most useful, plus, of course, the species descriptions : the sub-family keys are really rather involved.

I should really go and collect some Solomon's Seal sawfly larvae from the garden and run them down through the keys.