. Insects, injurious and beneficial, their natural history and classification, for the use of fruit growers, vine growers, farmers, gardeners and schools . The greater number of larvae have nine spiracles, or breath-ing pores (Fig. 48, H,) on each side of the body, one on each sideof the first segment, and one on each side of the segments fromfour to eleven, inclusive. When there is a line of any color extending along the spir-acles, it is termed the stigmatal line. The back of a larva istermed the dorsum, and when there is a line in the middle,extending lengthwise~with the body, it is termed
. Insects, injurious and beneficial, their natural history and classification, for the use of fruit growers, vine growers, farmers, gardeners and schools . The greater number of larvae have nine spiracles, or breath-ing pores (Fig. 48, H,) on each side of the body, one on each sideof the first segment, and one on each side of the segments fromfour to eleven, inclusive. When there is a line of any color extending along the spir-acles, it is termed the stigmatal line. The back of a larva istermed the dorsum, and when there is a line in the middle,extending lengthwise~with the body, it is termed the dorsal line. A line midway between the dorsal and stigmatal lines istermed the sub-dorsal line. The under part of the body istermed the venter. Some larva? are perfectly smooth-skinned, as the caterpillarof the Turnus Butterfly (Fig. 49); others are more or lesscovered with tubercles, such as the caterpillar Fig. 49. of the Cecropia Moth(Fig. 50); some are cov-ered with warts, from/*^which grow clusters ofhair, as the caterpillar of the Tussock Moth (Fig. 51); still others are covered withsmall polished spots, termed piliferous spots, such as th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1883
