Elementary textbook of economic zoology and entomology . elementarytextbo00kell Year: [c1915] 2i4 ECONOMIC ZOOLOGY AND ENTOMOLOGY that cause the disgusting disease known as itch are seldom found except on unclean people. These mites live normally in the skin, often burrowing deep and causing intense itching. Sulphur ointments and other washes are used as remedies, but on account of their burrowing habits these mites are hard to kill. Cleanliness will prevent infection. Closely related to the itch-mite of man are several kinds attacking domestic animals, causing mange, scab, etc. The variety i
Elementary textbook of economic zoology and entomology . elementarytextbo00kell Year: [c1915] 2i4 ECONOMIC ZOOLOGY AND ENTOMOLOGY that cause the disgusting disease known as itch are seldom found except on unclean people. These mites live normally in the skin, often burrowing deep and causing intense itching. Sulphur ointments and other washes are used as remedies, but on account of their burrowing habits these mites are hard to kill. Cleanliness will prevent infection. Closely related to the itch-mite of man are several kinds attacking domestic animals, causing mange, scab, etc. The variety infesting horses burrows in the skin and produces sores and scabs, and is a source of very great annoyance. These mites may also migrate to man. Tobacco water and sulphur ointments are used as remedies. Horses and cattle and other do- mestic animals are also infested by mites of the species Psoroptes com- munis, which cause the common mange. These do not burrow into the skin, but live on its surface in FIG. 98 —Itch-mite, Sar- coionies, feeding on the skin and copies scabiei, female, dor- . . sal aspect. (Greatly mag- causing crusts or scabs. The m- nified; after Fiirstenberg.) flammation causes the animal to scratch and rub constantly, and often results in the loss of much of the hair. Single animals may be treated with sulphur ointments or with lime-sulphur mixtures; where several are to be treated, dipping vats should be used. The mites, Psoroptes communis var. ovis, that cause scab in sheep, are among the worst pests that sheep owners have to contend with. Once introduced into the herd they spread rapidly so that the whole flock may soon become infested. The fleece of scabby sheep becomes rough and felted and is easily rubbed or pulled off, often leaving the sheep very ragged and sore. The most satisfactory treatment for scabby sheep is to hand dip them or drive them through vats containing lime and sulphur or tobacco mixtures.
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