. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 246 FESTS or ORCHARli ASli SMALL FRUITS istic punctures and do not bend sharply at one place. The drooping is due to the presence of a maggot which burrows in the pith of the cane and more or less girdles it from'the inside. The adult is a twowinged fly. and emerges in the spring. The insect remain.^ as a pupa within the cane over winter. Cut and destroy im'ested canes as soon as the wilting of the tips is obser\"ed. The Currant Stem-girdler {Janus inttger 'Sort.) Currant shoots -n-ilt and bend over shar
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 246 FESTS or ORCHARli ASli SMALL FRUITS istic punctures and do not bend sharply at one place. The drooping is due to the presence of a maggot which burrows in the pith of the cane and more or less girdles it from'the inside. The adult is a twowinged fly. and emerges in the spring. The insect remain.^ as a pupa within the cane over winter. Cut and destroy im'ested canes as soon as the wilting of the tips is obser\"ed. The Currant Stem-girdler {Janus inttger 'Sort.) Currant shoots -n-ilt and bend over sharply, and usually the tip soon breaks off and falls to the ground, lea-^-ing a square-cut stub. Within the remaining stalk, a few inches below the cut. will be found a Ught yellow larva hah" an inch long, wider toward the head, and pro- â i'ided with a forked spine at the hind end. The parent insect is a sawfly. The girdling of the stem is done by the adtilt just after depositing its egg in the shoot and at a point just above the egg. The \arvsL hibernates in the main shoot. It seldom burrows more than six inches t«?low the stub. Im'ested shoots should be cut off eight or ten inches below the stub. The Grape-cane Gall-maker (Ampiloglypkr .?:..<f' Lee.) A tiny snout beetle, one eighth of an inch long, sometimes injures grape canes in the. Fig. 325. âWork of the Grape-cane Gall- maker. C' Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
