Insects injurious to fruits . ous direc-tions, eating its way here and there to the surface. If ex-amined in the spring, most of the cavities will be found tocontain a moderate-sized, soft, silky case, nearly full of cast-ings, which doubtless has served as a place of retreat forthe larva during the winter. Early in June, when mature, the caterpillar changes to a small,reddish-brown chrysalis, either within one of the cavities ex-cavated in the crown, or among decayed leaves or rubbishabout the surface, from which the moth escapes early in July. The moth (see Fig. 333) is very small, of a dark
Insects injurious to fruits . ous direc-tions, eating its way here and there to the surface. If ex-amined in the spring, most of the cavities will be found tocontain a moderate-sized, soft, silky case, nearly full of cast-ings, which doubtless has served as a place of retreat forthe larva during the winter. Early in June, when mature, the caterpillar changes to a small,reddish-brown chrysalis, either within one of the cavities ex-cavated in the crown, or among decayed leaves or rubbishabout the surface, from which the moth escapes early in July. The moth (see Fig. 333) is very small, of a dark-gray color,with a few blackish-brown spots and streaks on the fore fringes bordering the wings are gray tinged with moth lays an egg on the crown of the plant late in Julyor early in August, which soon hatches; the small cater-pillar burrows into the heart of the plant, and remains in oneof the chambers during the winter, occupying one of the silky 21 321 322 INSECTS INJURIOUS TO THE STRAWBERRY. Fm. cases referred to. The channels formed by this larva throughthe crown and larger roots of the plant soon cause it to witherand die; or, if it survives, to send up weakened and almostbarren shoots. This insect does not limit its depredations to the strawberry;the larva is also found boring into the tender twigs of thepeach-tree and killing the terminal Fig. 333 we have a representation oftlie larva and moth, both of the naturalsize and magnified, also of an injuredpeach-twig. The insect is known to at-tack the peach-tree in Europe, whence ithas probably been imported to this —Dusting the plants withair-slaked lime or with soot has beenrecommended, but there seems to be noway thoroughly to destroy this pest except by digging upthe strawberry plants, burning them, and planting larvse are subject to the attacks of parasites, which doubt-less materially limit their increase. No. 191.—The Strawberry Crown-horer. Tyloderma
Size: 1476px × 1692px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
