. Insect pests of farm, garden and orchard . Fig. 474.—The cigar case-bearer (Coleopfwra fictcherella Fernald): a, adultfemale; b, side view of pupa and upper view of cremaster of same;c, larva; d, egg; e, venation of wings—much enlarged. (After Hammar,U. S. Dept. Agr.) and have been most interestingly described in detail by theauthors cited. The young caterpillars hibernate in their littlecases, which are attached to the twigs usually near or upon thebuds. Those of the pistol case-bearer are about one-eighth inch longand resemble the bark in color. A short time befort^ the leaf-luids burst in
. Insect pests of farm, garden and orchard . Fig. 474.—The cigar case-bearer (Coleopfwra fictcherella Fernald): a, adultfemale; b, side view of pupa and upper view of cremaster of same;c, larva; d, egg; e, venation of wings—much enlarged. (After Hammar,U. S. Dept. Agr.) and have been most interestingly described in detail by theauthors cited. The young caterpillars hibernate in their littlecases, which are attached to the twigs usually near or upon thebuds. Those of the pistol case-bearer are about one-eighth inch longand resemble the bark in color. A short time befort^ the leaf-luids burst in the spring, the larvie become active^ and attackthe growing buds, gnawing through the outer cover to feed onthe tender tissues beneath. Later they feed on the youngleaves, making small holes through the surface and feeding onthe soft tissue within in much the same manner as a true leaf- 620 INSECT PESTS OF FARM, GARDEN AND ORCHARD. miner. In feeding they do not leave the case, but reachout as far as possible from it. As they grow they enlargetheir cases, which finally assume the shape characteristic ofthe species. Those of the cigar case-bearer are straight and resemblea miniature cigar, being of a brown color and composed ofbits of leaf bound together with silk. The cases of the pistolcase-bearer resemble an old-fashioned pistol in shape, the butt being at the upper end, andare blackish, being composedof excrement and silk. Asthe caterpillars become largerthe} devour the entire leaf,except the midrib and largeveins, and also attack theflower buds, flowers and larvcC of the cigar case-bearer become full g r o w nabout the middle of June .nNew York, when they mi-grate to the twigs, where theyattach their cases firmly tothe bark and, turning aroundso that their heads are out-ward, transform to pupal stage lasts ten ortwelve dayti, most of the moths emerging in early July. Thepistol case-bearers
Size: 1960px × 1275px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
