. A manual of dangerous insects likely to be introduced in the United States through importations. ck Dutch, and Lees Prolific. GOOSEBERRY AND CURRANT INSECTS. 119 Injury: Seriously injurious; can be introduced in nursery stock. Description and biology: Microscopic. Adult about 230 microns long by 40 micronswide. Male smaller; color whitish or pale green, semitransparent and shiny. Sub-cylindrical in shape; 60-70 transverse rings furnished with regular series of short pro-jections, best seen on sides. Infests the buds which may contain thousands of mites,causing them to swell, producing so-cal
. A manual of dangerous insects likely to be introduced in the United States through importations. ck Dutch, and Lees Prolific. GOOSEBERRY AND CURRANT INSECTS. 119 Injury: Seriously injurious; can be introduced in nursery stock. Description and biology: Microscopic. Adult about 230 microns long by 40 micronswide. Male smaller; color whitish or pale green, semitransparent and shiny. Sub-cylindrical in shape; 60-70 transverse rings furnished with regular series of short pro-jections, best seen on sides. Infests the buds which may contain thousands of mites,causing them to swell, producing so-called big buds. Such buds, if they open,usually fail to produce fruit of value. (See text fig. 62.) Distribution: Middle Europe; England. Theobald, F. V. Insect Pests of Fruit, 1909, p. 230. SoRAUER, P. Handbuch der Pflanzenkrankheiten, 3d. ed., 1913, vol. 3, pp. 121-123, figs. 96, 97. Bryobia rlbis Thomas. (Red Gooseberry Mite. Tetranychidae; Acarina.) Hosts: Gooseberries and currants. Injury: Very serious injury caused by sucking the juices of the plant,introduce on nursery stock. \ery easy to. Fig. 62.—Currant gall mite (Eriophyes ribis): Mite and galls. (Sorauer.) Description and biology: This is one of the minute red spiders, having eight legs,which breed on the foliage of plants, causing a rusty appearance. The eggs are sphericaland microscopic in size. Distribution: Germany, England. Sorauer, P. Handbuch der Pflanzenkrankheiten, 3d ed., 1913, vol. 3, pp. 89-9J, figs. 67, 68. Abraxas grossularlata Linnscus. (Magpie or Currant Moth. Geometridse; Lepidoptera.) Host: Currant, gooseberry, and fruit trees. Injury: Defoliation; seldom seriously injurious. Description and biology: .4c?ui^ wing 37 mm. (variable); color creamy white,spotted with black, with orange yellow between black spots at base of forewings;hind wings like front, but with no yellow; thorax and abdomen yellow and wing in July and August (England). Pupa black, with three golden yellowrings to t
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