Bulletin . 5 concerning spraying.) THE HICKORY TIGER MOTH.* Thougli usually common upon hickory, walnut and butternut,for the past few seasons this caterpillar has been numerous inapple orchards. It also often attacks elm, ash, and linden, andwillow. Clusters of partly grown caterpillars were found feed-ing upon the under sides of the leaves early in August. Larvae.—The caterpillars become full grown during the latterhalf of September, when they are about l^/^ inches long. Theyoung caterpillars resemble the grown ones in coloration and arestriking insects with their tufts of white and black ha
Bulletin . 5 concerning spraying.) THE HICKORY TIGER MOTH.* Thougli usually common upon hickory, walnut and butternut,for the past few seasons this caterpillar has been numerous inapple orchards. It also often attacks elm, ash, and linden, andwillow. Clusters of partly grown caterpillars were found feed-ing upon the under sides of the leaves early in August. Larvae.—The caterpillars become full grown during the latterhalf of September, when they are about l^/^ inches long. Theyoung caterpillars resemble the grown ones in coloration and arestriking insects with their tufts of white and black hairs. Thecaterpillars are white with a row of eight black tufts along theback, two black, pencil-like tufts on the fourth and tenth seg-ments; four white tufts on the second and third, and two on theeleventh and twelfth. The head, forelegs, and the surface of thebody are covered with minute black tubercles and there is atransverse black line between each segment. (See figure 8.) * Halisidota earyae Fig. 8. Hickory Tiger Moth, a, larvae, back and side views ; b, moth enlarged ;c, young caterpillars —natural size. 220 N. H. AGR. EXPERIMEXT STATION. [Bulletin 139 The caterpillar spins an oval grayish cocoon under stones orrubbish, in the crevices of a wall or bark, and transforms to thepupa, in which stage the winter is passed. Moth.— (Figure 8, b.) The moths emerge about the middleof June (June 16, 1898; 21, 1900). The wings of the female ex-pand from 11/2 to 2 inches, the fore-wings being light brown, spot-ted with silvery white markings, and with the veins darkerbrown. The thorax is light brown, and the abdomen darkerbrown. The male is smaller and has the antemia^ more eggs are doubtless laid on the foliage about July 1st, l)utdo not seem to have been observed. REMEDIES. Spraying with paris green or arsenate of lead about the 1stof August, as advised for the above caterpillars, will usually con-trol this species ecpially well. therusty tussock moth.*
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