See text Hoplocampa is a genus of hymenopteran sawfly in the family Tenthredinidae.

The larva is a "false-caterpillar" which feed on the young fruit.

The yellow prune tree sawfly (Hoplocampa flava) is very common.

[3] At the start of vegetation (10 to 15 days before flowering), install white glued bands on the trees at a height of about 0.70 to 1 meter.

Idem for the cherry sawfly but with yellow bands.