. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE INSECTS. 203 The Native Currant Worm (Gymnonychus appendiculatus) is now rarely seen on cultivated currants or gooseberries; hence need not be discussed here. The Currant Spanworm {Eufitchia ribearid) (Fig. 271), is occasionally destructive to currants and gooseberries in cer- tain localities. It is a bright yellow looping caterpillar with black spots, that hatches in the spring from eggs laid on the twigs in the fall by a pale yellowish m
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE INSECTS. 203 The Native Currant Worm (Gymnonychus appendiculatus) is now rarely seen on cultivated currants or gooseberries; hence need not be discussed here. The Currant Spanworm {Eufitchia ribearid) (Fig. 271), is occasionally destructive to currants and gooseberries in cer- tain localities. It is a bright yellow looping caterpillar with black spots, that hatches in the spring from eggs laid on the twigs in the fall by a pale yellowish moth with several dusky spots on its wings. Hellebore or Paris green, used as recommended for the green currant worm, will destroy these span- worms. Th e Raspberry - cane Borer {Oberea bimacu- lata) is sometimes a se- rious pest in raspberry and blackberry planta- tions. The adult insect is a slender dark-colored beetle, about one-half an inch long, and with a j^ellow thorax. The beetles appear in June, and the female with her mandibles makes two rows of punctures, about an inch apart, around the growing cane near the tip. She then deposits an egg in the cane midway be- tween the punctures which serve to girdle the cane and cause it to droop and wither. The little white grub soon hatches from the egg, and proceeds to tunnel its way down the pith of the cane. Recent observations indicate that the grub lives in the cane for two seasons, often extending its tunnel down to the ground, where it transforms through the pupa stage to the â beetle. This borer is easily controlled by cutting off when first no- ticed all canes with drooping tips several inches below where they are girdled; this will destroy the young grubs. Later, when harvesting the fruit, the infested canes can often be detected by their sickly appearance or the drying of the. Fig. 270.âImported Currant Worm.â Please note that these images are extracted from scanned page images that may have been digitally en
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