Insects injurious to fruits . SECTS INJURIOUS TO THE APPLE. bands should be tied tightly in the middle. Each caterpillaris furnished with four pairs of fleshy prolegs, which arefringed with small horny hooks, and on its trying to passover the cotton these hooks get so entangled in the fibresthat further progress becomes very difficult, and is seldompersisted in. A shower of rain will pack the fibres of thecotton somewhat, but where the string fastening it is tiedaround the middle, the upper half washes down and makesa sort of roof overhanging the lower portion, which in greatmeasure protects i
Insects injurious to fruits . SECTS INJURIOUS TO THE APPLE. bands should be tied tightly in the middle. Each caterpillaris furnished with four pairs of fleshy prolegs, which arefringed with small horny hooks, and on its trying to passover the cotton these hooks get so entangled in the fibresthat further progress becomes very difficult, and is seldompersisted in. A shower of rain will pack the fibres of thecotton somewhat, but where the string fastening it is tiedaround the middle, the upper half washes down and makesa sort of roof overhanging the lower portion, which in greatmeasure protects it from the weather. These larvse are seldom abun-dant for many years in succession,for in times of great plenty theirnatural enemies multiply withamazing rapidity. Several par-asites destroy them. Two speciesof Ichneumon flies prey on them,also a two-winged Tachina fly,closely resembling the Red-tailedTachina fly, Nemorsea leucanise (Kirkp.) (Fig. 46), whichattacks the army-worm, but this fly is without the red tail. Fig. Fig. 47.
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
