sawfly

sawfly

Observation - sawfly. Description: Sawfly larvae on what might be an apple sapling growing in mature woods.The last photo was taken on 28th April on the same tree.It shows young sawfly larva most of which have black heads very few with yellow.All the larva today had yellow heads.Does the c

Sawfly larvae on what might be an apple sapling growing in mature woods.The last photo was taken on 28th April on the same tree.It shows young sawfly larva most of which have black heads very few with yellow.All the larva today had yellow heads.Does the colour ever change when they moult ?