Blennocampa phyllocolpa

Blennocampa phyllocolpa is a small black sawfly whose larvae gall the leaves of rose (Rosa) species causing both sides of the leaflet to roll downwards to the main vein, forming loose tubes, often spirally twisted. These may contain the green sawfly larvae.

Wherever the host species (Rosa) are found.

Whenever Rosa species are in leaf.

The leaf roll may be empty as the larvae often leave one tube to construct another.

Widespread and fairly frequent in Britain.

Status in Leicestershire and Rutland not known.