This caterpillar, Fig. 21, is generally found on grapevines early in June, but also feeds on apple, plum, raspberry, maple, poplar, etc. It is about an inch and a half in length, with the body tapering toward the head; of a whitish green color, darker on the sides; with a longitudinal white stripe on the back, broader on the last segments. Low down on each side is a bright yellow stripe, between this and the one on the back is another less distinct, and the under surface of the body is pale green.

The Pyramidal Grapevine Caterpillar Pyrophila Pyra 803 3 fig21

The caterpillar is fully grown about the middle or last of June, when it descends to the ground, draws together some of the fallen leaves, and makes a cocoon, in which it soon changes to a mahogany brown pupa.

The Pyramidal Grapevine Caterpillar Pyrophila Pyra 803 3 fig22

In the latter part of July the perfect moth, Fig. 22, emerges, measuring, when its wings are expanded, about one and three-fourths inches; the fore wings are dark brown shaded with lighter, with dots and wavy lines of dull white. The hind wings are reddish, or of a bright copper color, shading to brown on the outer angle of the front edge of the wing, and paler toward the hinder and inner angle.

The under surface of the wings is lighter than the upper, and the body is dark brown, with its posterior portion banded with lines of a paler hue.

This pest may be destroyed by hand picking, or by jarring the trees or vines on which they are feeding, when they will fall to the ground and may be crushed or burned.