. Manual of fruit insects. ig. 82). Bothsexes of the moths have on top of eachof the first seven abdominal segmentstwo transverse rows of sharp reddishspines projecting backward ; as there areno spines on the moths of the fall canker-worm it is easy to distinguish the two species of canker-worms in the moth stage. A single female moth of the spring canker-worm may lay over 400 eggs, which she tucks away in small, irregular pits or clusters in the crevices under bark scales and moss on the trunk and larger limbs of the trees. The delicate, slightly ridged, oval eggs are about -^-i^ of an inch l
. Manual of fruit insects. ig. 82). Bothsexes of the moths have on top of eachof the first seven abdominal segmentstwo transverse rows of sharp reddishspines projecting backward ; as there areno spines on the moths of the fall canker-worm it is easy to distinguish the two species of canker-worms in the moth stage. A single female moth of the spring canker-worm may lay over 400 eggs, which she tucks away in small, irregular pits or clusters in the crevices under bark scales and moss on the trunk and larger limbs of the trees. The delicate, slightly ridged, oval eggs are about -^-i^ of an inch long and of a dark iridescent metallic buff or purplish color (Fig. 83). The eggs hatch early in May, and the caterpillars feed for about a month on the pulpy portions of the leaves, thus skeletonizing them. The full-grown caterpillars are about an inch long, slender, and have but two pairs of pro-legs, thus being readily distinguished from the fall canker-worms, with their short third pair of pro-legs (Fig. 84). The spring. Fig. 83. — Eggs of the springcanker-worm. Enlarged. APPLE INSECTS — BUDS AND FOLIAGE 81
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
