Quote:
Originally Posted by borderglider  Thanks Laurence,
I assure you that the leaf in question is a Birch - Betula Jacquemontii - Himalayan Birch - honest! Anyway, the photo was taken last summer - if they return again I will try and give them a home till they pupate - though what a sawfly looks like I have no idea.
Graham |
Thanks for the clarification- the leaf was obviously not Silver Birch. As Paul says they could be a
Croesus. I have reared
C. septentrionalis from similar-looking larvae found on Alder
Alnus glutinosa. These pupated soon after collecting and adults emerged within a month.