Life History.

The perfect insect is only about a line-the twelfth of an inch,-in length. It is of a blackish or darkish brown colour, with long wings having long thick cilia or fringes. The antennæ are also fringed. The males are wingless. It is believed by Taschenberg that they pass the winter in decayed roots and in stubble, in the perfect state, emerging thence in early spring, and laying eggs on grasses and on corn plants, and producing many generations in the course of the summer. The larvæ are of a bright orange yellow colour, and may be distinguished from the larvae of the Cecidomyia tritici by being of a rather brighter colour and not quite so large, and by the end of the abdomen being dark coloured; as well as by both the larvae and pupæ being furnished with three pairs of claw feet.