Annual report of the Maine Agricultural Experiment Station . TATION. 23 is bluish gray. A well defined row or band of light markingsnear the outer margin of the front wings, and three darker,irregular bands, across the same wings, together with theslightly lighter color and absence of markings on the hindwings, are characteristic features. The inconspicuous femalemoths are wingless and, because of this fact, the spread of thespecies is very slow, occurring mainly by the transportation ofnursery stock infested with eggs. The moths usually emerge from the ground early in thespring—about April, o
Annual report of the Maine Agricultural Experiment Station . TATION. 23 is bluish gray. A well defined row or band of light markingsnear the outer margin of the front wings, and three darker,irregular bands, across the same wings, together with theslightly lighter color and absence of markings on the hindwings, are characteristic features. The inconspicuous femalemoths are wingless and, because of this fact, the spread of thespecies is very slow, occurring mainly by the transportation ofnursery stock infested with eggs. The moths usually emerge from the ground early in thespring—about April, or farther south in March—and thefemales climb up the trunks of trees to deposit eggs. The eggs,which are shaped something like hens eggs and are about thesize of fly specks, are deposited in irregular masses, usuallypartially concealed by loose pieces of bark. They hatch aboutthe time the leaves unfold; the time varying with the localityand the season. The larvae are measuring worms with 2pairs of legs at the hind end of body (fig. 5). The young larvae. Fig. 5. a, larva, showing the two pairs of pos-terior legs; b, single egg, much enlarged. (Af- ter Riley) are voracious feeders and they grow rapidly, usually attainingfull size in from three to four weeks from the time of reaching full size they drop to the ground, burrowingbeneath the surface to a depth of two to five inches. Here eachone forms a cell, lined with silk which it spins, and soon trans-forms to the chrysalis stage, where it remains until the followingspring, when the adult moth emerges as before. II. FALL CANKER-WORM. (Alsophila pometaria.) The fall canker-worm so closely resembles the other speciesas to be frequently mistaken for it. For all practical purposesthey may be considered together, but the fall canker-worm ismore distinctively a northern insect. As in the other species,the female moth is wingless, but in this species she lacks thehairiness which characterizes the other. The male moth h
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear
