Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . FIG. 230.— A, willow-leaves rolled by a caterpillar; B, willow-leaves rolled, seen in section. or four small rolls may be found on one leaf. The gall-makers are not the species of Cynips alone, butalso certain gnats and Aphides, including the Phylloxera,which inhabit shelters, due to the morbid growth and mul-tiplication of cells on the leaves and twigs, or roots, as the 182 ENTOMOLOGY. case may be, stung by the parent, whose instincts are exer-cised in selecting the proper plant, and portion of plant
Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . FIG. 230.— A, willow-leaves rolled by a caterpillar; B, willow-leaves rolled, seen in section. or four small rolls may be found on one leaf. The gall-makers are not the species of Cynips alone, butalso certain gnats and Aphides, including the Phylloxera,which inhabit shelters, due to the morbid growth and mul-tiplication of cells on the leaves and twigs, or roots, as the 182 ENTOMOLOGY. case may be, stung by the parent, whose instincts are exer-cised in selecting the proper plant, and portion of plant, tosting. Although the gall-flies are not the direct architectsof the galls, no collection of insect-products would be com-plete without a series of galls, of which there are so manykinds. Intermediate between leaf and wood miners, and case-worms, are certain Pyralid moths which not only crumpleand roll up the leaves of plants, but piece out their minesby tubular additions to the openings, which form cases inwhich the caterpillar securely hides. As examples areAcrobasis juglandis and P
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
