Identifier: canesugartextboo00deer (find matches)
Title: Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products
Year: 1921 (1920s)
Authors: Deerr, Noël, 1874-
Subjects: Sugar
Publisher: London, N. Rodger
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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a andTrinidad.22 Of minor pests that have been recorded may be mentioned variouscoccids, such as Trcchocorys (dactylopius) calceolaricp,^^ the mealy bug,of very wide distribution; certain aphids, such as the black and yellow blast in the West Indies, Aphis setarice and Sipha flava ;^^ the white andthe green louse of Java, Oregma (Ceratovacuna) lanigera, a.nd A phis sacchari.^^This last species is illustrated in Plate XVI, No. 10, and shows the enormousnumber of these insects that may occur in a limited area. Orthopterous Pests.—The orthoptera do not include any major pests ofthe cane. The one of most interest is the mole cricket, Scapteriscusdidactylus, of the West Indies.^^ While a general feeder, this insect onlyattacks the cane incidentally. During the day it feeds on roots underground ♦The two insects discussed above were formerly known as Sphenophorus obscurus and S. sericeus, and it isunder these names that they are described in ail but the more recent literature. Plate XVI.
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THE PESTS AND DISEASES OF THE CANE 145 and emerges at night to attack the crop above ground. It onl)- becomes,dangerous when for some reason the natural balance has been disturbed. Another widel)^ distributed cricket, Gryllotalpa africana, in addition tafeeding on the cane, does damage to irrigation ditches in the HawaiianIslands by means of its tunnels. WTiite ants, Termes tnprobanes, have been recorded in India by Hadi^as attacking seed cane and the young shoots after germination, and areto be regarded as a major pest of that country. In Java the thrips or bladder feet, sometimes included in the orthoptera, have been observedas a minor pest. Acarid Pests.—Mites are a form of life frequently found on cane, but thedamage done is usuallj trifling. A serious amount of harm was done inQueensland in 1876 by a mite, Tarsonymns baticroftii.^^ The disease wasthen known as cane rust. These mites are also present in Java and inBarbados. To a certain extent they are to be considered beneficia

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