. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. 340 AGRICULTURE OI' MAINK- II. FALL CANKER-WORM. (Alsophila pometaria.) The fall canker-worm so closely resembles the other species as to be frequently mistaken for it. For all practical purposes they may be considered together, but the fall canker-worm is more distinctively a northern insect. As in the other species, the female moth is wingless, but in this species she lacks the hairiness which characterizes the other. The male moth has two light bands across the front wi
. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. 340 AGRICULTURE OI' MAINK- II. FALL CANKER-WORM. (Alsophila pometaria.) The fall canker-worm so closely resembles the other species as to be frequently mistaken for it. For all practical purposes they may be considered together, but the fall canker-worm is more distinctively a northern insect. As in the other species, the female moth is wingless, but in this species she lacks the hairiness which characterizes the other. The male moth has two light bands across the front wings instead of the single one of the preceding, and the rear wings are slightly shaded. The larvae of this species also, besides having three pairs of legs under the hind end of the body, as shown in figure 6, have a broad, dark stripe along the back, as opposed to the narrow markings of the other species. The eggs, which are slightly larger than in the previous species, somewhat resemble small flower pots and are attached to the bark, in exposed situations, in masses of from 60 to 200, placed side by side as seen in figure 6, e. The eggs highly magnified, are shown in figure 6 a. Fig. 6. a, single egg, much en- larged ; e, egg mass; f, larva showing the three pairs of pos- terior legs. (After Riley). The eggs are deposited in fall or early winter (sometimes in mild winters as late as March). They hatch about the same time as those of the other species and the larvae act in a similar manner, entering the ground about the same time. Instead of forming a cell lined with silk, however, this species spins a tough cocoon, and the moths come forth and begin laying eggs in October and November. HOW TO FIGHT CANKER-WORMS. One of the surest preventive measures is to place a band of tarred paper about the tree in March and smear it wnth tree tanglefoot, thus preventing the ascent of the female moths and the deposit of eggs. In case the bark is very rough, it should. Please note that thes
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