Berberis Sawfly - Arge berberidis


The adult fly is black.


To be found on berberis and mahonia plants.

When to see it

June to August

Life History

Berberis sawfly larvae cause severe defoliation on some berberis and mahonia spp. in Britain. They have a black head on a greyish-white body with yellow blotches and small black dots.

UK Status

First British record was in Essex in 2002, since when it has been recorded in most southern counties, and has reportedly now reached Yorkshire.

VC55 Status

Previously uncommon in Leicestershire and Rutland, its numbers now seem to be increasing.

Leicestershire & Rutland Map

UK Map