Pyralis
(Hypena) ROSTRALIS (Hop Snout Moth). This insect is common in the southern districts of England, where the larvae feed on the leaves of the Hop, frequently doing a great deal of harm to them. The moths, when at rest, have the wings folded horizontally, and assume the form of the Greek letter delta. They have long palpi, projecting forwards, and the group may be recognised by this peculiarity, whence they are called Snout Moths. The front wings are greyish-brown, darker towards the base, paler along the front margin and across the terminal half of the wing, and a dark line runs from the tip, diverging from the rear margin. The hind wings are uniform brownish. The spread of wings is a little over 1in. The larvae are rather slender, tapering in front, pale green, with narrow, white lines lengthwise; they have six true legs and eight prolegs or claspers. When full-fed, they spin slight cocoons in leaves drawn a little together, and there become pupae. Remedies. Hand-picking the larvae, and the leaves inclosing pupae, and burning all surface rubbish with the pupae in it, is the most effectual remedy. Beating the Hops (taking care not to injure the plants) and jarring the Hop-stakes, so as to cause the larvae to fall on to sheets, is efficacious; the larvae being afterwards burnt. Syringing the plants with any of the usual insecticides, by means of a garden engine, is also of use.