Sawfly Larvae

This is the larva of the gooseberry sawfly, and it's on our gooseberries.  It's the same every year, as soon as the fruit begin to form, a lady sawfly comes flying by and lays some eggs.  Once they're on the bush, one can try to control the infestation by picking off the larvae - even shaking the bush dislodges many of them - but that method won't get all of them, so we resort to spraying the bushes.