Blueberry problem

Was so excited as my two bushes have quite a lot of berries this year, so went to pick them today and found that some kind of moth (I think) has laid its eggs on the clusters of berries and the caterpillars have kindly hatched just when the berries are ripe, and guess what, they have sucked them dry! 

Can't find any reference to this kind of problem for blueberries, and idea what they may be and what I can do to stop it happening again?

Thanks