. Insect pests of farm, garden and orchard . oil to a depth of 2 to 5 inches,where they hollow out earthen cells, which they line with a littlesilk and in them change to pupic, in which stage the summer andwinter is passed. The pupa is nearly one-third inch long, lightbrown in color, somewhat pitted, and the male pupa bears asimple spine at the tip of the alxlomen. The Fall Canker Worm * The Fall Canker Worm seems to be the more common form inNew England according to Dr. Britton and is a more northernspecies according to Coquillet, occurriiig through the North- * Alsophila pometuria Harris. Fa
. Insect pests of farm, garden and orchard . oil to a depth of 2 to 5 inches,where they hollow out earthen cells, which they line with a littlesilk and in them change to pupic, in which stage the summer andwinter is passed. The pupa is nearly one-third inch long, lightbrown in color, somewhat pitted, and the male pupa bears asimple spine at the tip of the alxlomen. The Fall Canker Worm * The Fall Canker Worm seems to be the more common form inNew England according to Dr. Britton and is a more northernspecies according to Coquillet, occurriiig through the North- * Alsophila pometuria Harris. Family Geomctridce. SOME INSECTS INJURIOUS TO ORCHARD FRUITS 573 Central States and in Colorado and northern California. As itsname indicates, it differs in life history in that the moths emergein November and Decendjer, often occiii-rin<i- in great numberson foggy days during a thaw after the ground has been are most numerous about tht middle of November in Connec-ticut, although Dr. Brittdn states that when the ground freezes. Fic. 427.—The fall canker worm {Ahophila pometaria): a, male moth;b, female—natural size; c, joints of female antenna; d, joint of femaleabdomen—enlarged. (From Riley.) in early fall and does not thaw, many- of the adults do not emergeuntil March, when the life history would be identical with thelast species. The eggs are laid in clusters of about 100, arrangedin rows, each egg fastened on end, and are laid on the bark of thesmaller branches or on the trunk. The egg is brownish-gray,rather darker than that of the spring species, and is shaped like
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