Michael Jackson's picture


Observed: 13th September 2012 By: Michael Jackson

One of several caterpillars, 3-4cm long, feeding on the leaves of a young Birch, Betula pendula, 2m high in full sun in a clearing. When first seen, some 10 days earlier, there were about 15 of them, little more than 1cm long, all feeding round the edge of the same leaf. When aware of my presence they lifted their tails, making a fringe all round the leaf. Later, as they grew, they spread out into the crown of the tree, eating quite a lot of the leaves. The tree, which I had planted, was growing well, and had already made good buds for next year, so I let Nature take its course.

Species interactions

No interactions present.

Species with which Sawfly larva (Symphyta) interacts