1 > Leaf-
and stem-miner: Mine predominantly in the leaves. The beginning of the mine is a
full depth corridor lying on the leaf margin, with or without large,
black frass grains. The larva goes through the stem, mines leaf
after leaf, hollowing these out (Hering, 1957). The
larva mines a number of leaves, and bores in the stem segments inbetween.
Frass, as far as visible, in large black lumps. Pupation outside
the mine. |