A gall provides the developing gall wasp with a safe refuge for the most vulnerable stage of its life cycle , but many other wasps have found a way to penetrate this defence and parasitise the larva ( e ) within .
A gall provides the developing wasp with a safe refuge for this most vulnerable stage of its life cycle . However , other wasps have found a way to penetrate this defence and parasitise the larva ( e ) within .