. Dandelions, hawkweeds, ginseng, canker worms. 122 MAINE AGRICULTURAL EXPERIMENT STATION. near the outer margin of the front wings, and three darker, irregular bands, across the same wings, together with the slightly lighter color and absence of markings on the hind wings, are characteristic features. The inconspicuous female moths are wingless and, because of this fact, the spread of the species is very slow, occurring mainly by the transportation of nursery stock infested with eggs. The moths usually emerge from the ground early m the spring—about April, or farther south, in March—and the f
. Dandelions, hawkweeds, ginseng, canker worms. 122 MAINE AGRICULTURAL EXPERIMENT STATION. near the outer margin of the front wings, and three darker, irregular bands, across the same wings, together with the slightly lighter color and absence of markings on the hind wings, are characteristic features. The inconspicuous female moths are wingless and, because of this fact, the spread of the species is very slow, occurring mainly by the transportation of nursery stock infested with eggs. The moths usually emerge from the ground early m the spring—about April, or farther south, in March—and the females climb up the trunks of trees to deposit eggs. The eggs, which are shaped something like hens eggs and are about the size of "fly specks," are deposited in irregular masses, usually partially concealed by loose pieces of bark. The}^ hatch about the time the leaves unfold ; the time varying with the locality and the season. The young larvae are voracious feeders and they grow rapidly, usually attaining full size in from three to four weeks from the time of hatching. Upon reaching full size they drop to the ground, burrowing beneath the surface to a depth of two to five in#ies. Here each one forms a cell, lined with silk which it spins, and soon transforms to the chrysalis stage, where it remains until the following- spring, when the adult moth emerges as before. THE FALL CANKER-WORM.—(AlsopJiHa povictavia.) 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. ..gjpj the female moth (see figure 39 '''') is wingless, but in this. species she lacks the hair- iness which characterizes the other. The male Figure 39-Fall canker worm; a. male moth; b. ^-.^.i-l-, /fio-m-*^ ic\ n\ lioc female moth; rf. egg cluster. mOtn (UgUrC 39 a) nas two light bands across the front wings
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherorono, bookyear1903
