Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . d egg (Fig. 107, .4) upon theleaf, and by the end of summer one may find the greatgreen worm in the same place. The body is round, fat,and smooth; there are twelve segments behind the the top of the segment next to the head is projected, * According to Dr. Koyston-Piggott, the foot-stalk or pedicel of ascale consists of two membranes united to form a tube which gathersup and distributes the nourishing fluid among the striations or ribs ofthe scale. The scale has been resolved into a series o
Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . d egg (Fig. 107, .4) upon theleaf, and by the end of summer one may find the greatgreen worm in the same place. The body is round, fat,and smooth; there are twelve segments behind the the top of the segment next to the head is projected, * According to Dr. Koyston-Piggott, the foot-stalk or pedicel of ascale consists of two membranes united to form a tube which gathersup and distributes the nourishing fluid among the striations or ribs ofthe scale. The scale has been resolved into a series of latticed ribs,connected by irregular cross bars; each rib displaying double blackmargins, and the cross bars often beaded. The scales of Lepidopteramake admirable tests for the highest powers of the microscope. In the scales of MorpJio cypris the cross-bar structure, like all theseazure blues, is most delicate, and produces glorious color. Papiliotroilus is worth close investigation for reticulated bars. (Micro-scopical Advances, xxvii.; English Mechanic, Nov. 11, 1887.) 144 FIG. 173.—a, egg of Pieris ole~racea; b, Colias philodice; c,Vanessa atalanta. — AfterScudder. when the caterpillar is disturbed, a singular V-shaped yellow organ, which sends out adisagreeable smell, and is thoughtto be repugnant to birds, ichneu-mon insects, etc. On each sideof the third segment is a largeeye-like spot, peculiar to thisspecies. There are along thebody nine pairs of spiracles, one on ^ie segment nex^ to the head,and eight pairs on the fourthto eleventh segments, or whatcorrespond to the first eight abdominal segments of thebutterfly, the latter having, however, but seven pairs ofspiracles on the hind body. The caterpillars eyes are minute, simple eyelets, three orfour on each side of the head, and only useful, probably, indistinguishing day from night. This is useful information,considered from a caterpillars standpoint, as most of themhide by day and feed by night. That
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
