Unidentified caterpillar help

Bogwoppit

Found these guys on one of my hazel saplings this evening, looks a bit like the box moth caterpillar but I don’t think it’s it, any ideas?

Alun

I think they're sawfly larvae, not butterfly or moth caterpillars. There's one that specifically targets hazel called, rather predictably!, the hazel sawfly ...

https://melickblog.wordpress.com/2017/08/02/hazel-sawfly/

If there are enough of them, you may not have any hazel saplings left before long

axe2grind

Larvae of a Sawfly, don't know which species. I have seen similar looking on Birch, but I think they may be foodplant specific, so may not be same species.

Bogwoppit

That’s it, well done! Thanks very much

axe2grind

Alun wrote: »

I think they're sawfly larvae, not butterfly or moth caterpillars. There's one that specifically targets hazel called, rather predictably!, the hazel sawfly ...

https://melickblog.wordpress.com/2017/08/02/hazel-sawfly/

If there are enough of them, you may not have any hazel saplings left before long

That link mentions birch as a foodplant as well.

Bogwoppit

They’ve made a good meal of that sapling but looks like the damage is only temporary from what I’ve read, I’ll leave them alone.