. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. THE ACAEINA OR MITES. 109 waitei Banks attacks the grovring terminal twigs of peach trees and turns them into elongate, blackened, and distorted galls with many small lateral twigs and leaves growing from them. But few remedies have been proposed for these mites. A mix- ture of powdered sulphur in soap and water has been suggested for one on sugar cane. Picking infested parts has also been recommended. The genus Tarsolarhus Thor is very similar to Tarsonemus, but has a pulvillus between the tarsal claws
. The Acarina or mites. A review of the group for the use of economic entomologists. Mites. THE ACAEINA OR MITES. 109 waitei Banks attacks the grovring terminal twigs of peach trees and turns them into elongate, blackened, and distorted galls with many small lateral twigs and leaves growing from them. But few remedies have been proposed for these mites. A mix- ture of powdered sulphur in soap and water has been suggested for one on sugar cane. Picking infested parts has also been recommended. The genus Tarsolarhus Thor is very similar to Tarsonemus, but has a pulvillus between the tarsal claws, and the body is slender and clothed with bristles; it occurs in moss in northern Europe. The curious genus Scutacarus (fig. 225) has a migratorial nymphal stage much like the hypopus of the Tyroglyphidae. This stage has been found on bees and ants. The adult occurs on plants and among dead leaves. Amer- ican species have been taken from bees of the genus Apis, Halictus, and Nomia Berlese describes several species from ants. He has divided the genus into three genera, as follows: 1. Leg I without claw Diversipes. Leg I with a claw 2 2. Leg IV without terminal caroncle. Scutacarus. Leg IV with terminal Imparipes. Most of the few known species remain in Scutacarus. This genus was first described by Gros in 1845, and renamed Disparipes by Michael, who did not know of Gros's paper. The species of Imparipes (fig. 226) have Jf 4,. / ^ little resemblance to ordinary mites. Family TYROGLYPHID^. The T>Toglyphid8e ("Sarcoptides detri- /^a//"Vp /:.->??/ coles" of Megnin) is not a large family of mites, but many of them are of considerable economic importance, since several affect stored foods and the roots and bulbs of living plants. They have been known to natural- / / 11 \\ ists from the time of Linnaeus. In the adult / | j \ \ condition they are usually free, but during one stage of their life, known as the hypopial. Fig. 227.—Tyroglyphus sp. (From Ma
Size: 1292px × 1935px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1915
