. Manual of fruit insects. e. The Negro-bug Corimelcena pulicaria Germar Blackberries, raspberries and strawberriesoften acquire an unpleasant flavor fromhaving served as the feeding ground of asmall black sucking bug. The adult isshiny black and has a white stripe on eachside of the body; it is about an eighthof an inch in length. The female depositsher orange-yellow, elongate, oval eggs singlyon the leaves of the plant. They hatchin about sixteen days. The nymphs punc-ture the tender foliage as well as the fruit,sometimes causing a slight injury to theleaves. On berries, however, they aremos
. Manual of fruit insects. e. The Negro-bug Corimelcena pulicaria Germar Blackberries, raspberries and strawberriesoften acquire an unpleasant flavor fromhaving served as the feeding ground of asmall black sucking bug. The adult isshiny black and has a white stripe on eachside of the body; it is about an eighthof an inch in length. The female depositsher orange-yellow, elongate, oval eggs singlyon the leaves of the plant. They hatchin about sixteen days. The nymphs punc-ture the tender foliage as well as the fruit,sometimes causing a slight injury to theleaves. On berries, however, they aremost troublesome because of the disgust-ing odor which they impart to the insect is sometimes a serious celerypest. RASPBERRY, BLACKBERRY AND DEWBERRY INSECTS 325 No satisfactory method of controlling negro bugs on berrieshas yet been devised. The TREfc-CRICKET (Ecanthus nigricornis Walker Several species of tree-crickets occur abundantly in theeastern United States and Canada. These dehcate, greenish- <:Mm^i^^W. Fig. 279. — Tree-cricket egg-scars in raspberry canes, one cane split open to show the eggs. white, long-horned crickets become mature in late summerand the females deposit their eggs in punctures in the tissue ofvarious plants. Injury to blackberry and raspberry canes iscaused principally by the female of nigricornis. The eggs ofthis species are about | inch in length, cyhndrical, sUghtlycurved and chrome yellow in color, with the egg-cap cream- 326 FRUIT INSECTS colored. They are inserted (Fig. 278) in a row of puncturesoften two inches in length, each row on the average containingabout 30 eggs and may have as many as 80 in a row (Figs. 279and 280). The eggs hatch in May and June and the young treecrickets feed principally on aphids and other soft-bodiedinsects. The rows of punctures either kill the upper part of the caneor so weaken it as to prevent the development of the very abundant, as is sometimes the case, the loss maybe large. In the p
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
