The larva feeds on hawthorn, apple, and other trees. The perfect insect flies in July and August. _Depressaria nervosa_ The next family--_Gelechiidae_--is represented by the species Nervosa, which is common in many localities. [Illustration: FIG. 237.--NERVOSA--TWICE NATURAL SIZE.] Its fore wings are reddish brown, and are marked by a number of short longitudinal streaks of a darker colour. The hind wings are light grey. The caterpillar is black, marked with black spots in white rings, and having yellow side stripes. It feeds on the flowers of the hemlock water dropwort (_[OE]nanthe crocata_) during June and July. The moth flies in August and September. _Harpella Geoffrella_ The same extensive family contains the moth Geoffrella, represented in the accompanying cut. This is an exceedingly pretty insect. The basal portion of its fore wings is yellow, with two longitudinal dark streaks, the outer one of which is bent towards the inner margin near the middle of the wing. The remaining portion of the wings is brown, with two yellowish triangular spots, one on the costal and one on the inner margin. On the middle of the costa is a short dark streak. [Illustration: FIG. 238.--GEOFFRELLA.] This moth appears in May and June, and is rather local, but very abundant in some parts. _Coleophora ibipennella_ The family _Coleophoridae_ contains about seventy small moths, characterised by their very narrow and pointed wings, with long fringes, and also, generally, by a little tuft of hair on the first joint of the antennae. [Illustration: FIG. 239.--IBIPENNELLA--ENLARGED.] The larvae live in little cases which they construct, and feed on various leaves and seeds. They spend the winter within their cases, and change to the chrysalis state in spring or early summer. One of these moths--_Ibipennella_--is shown in fig. 239. Its fore wings are white, with a satiny gloss, and brownish towards the tips. The 'nervures' are generally of a yellowish tinge. The hind wings are dark grey. The larva feeds on the birch (_Betula alba_), and may be seen walking on the surface of the leaves, carrying, or rather dragging after it, the pistol-shaped case in which it lives, nothing protruding save its head and front legs. It is full fed in May, and the moth flies in July. _Tischeria complanella_