Caterpillar Id

pugslovesun

Please could anyone tell me what this caterpillar will become, thanks, spotted in garden.

Alan Clark2 in Liverpool

It looks like Croesus septentrionalis – Hazel or Birch Sawfly.

pugslovesun

Sawfly -that doesn't sound good?

Alan Clark2 in Liverpool

If that is the correct ID then there could be many more nearby as they are gregarious, although they shouldn't do any serious damage to whatever they are feeding on.

Yours looks like the third photo here:

https://www.ispotnature.org/species-dictionaries/uksi/Craesus%20septentrionalis 

Last edited: 03 September 2016 23:48:00

pugslovesun

Yes that does look like it. will keep a look out for more. Thanks Alan