File:Handbook of medical entomology (1915) (14594913780).jpg

Identifier: handbookofmedic00rile (find matches)
Title: Handbook of medical entomology
Year: 1915 (1910s)
Authors: Riley, William Albert, 1876- Johannsen, Oskar Augustus, 1870-1961 Metcalf Collection (North Carolina State University). NCRS
Subjects: Insect pests Insects as carriers of disease Medical parasitology
Publisher: Ithaca, N.Y., The Comstock publishing company
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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94. Dermatophilus penetrans, gravid female. After Moniez. pests may attack a single individual (fig. 95). Here they lie with theapex of the abdomen blocking the opening. According to Fiille- born (1908) they do notpenetrate beneath theepidermis. The eggs arenot laid in the flesh ofthe victim, as is some-times stated, but areexpelled through thisopening. The femalethen dies, withers andfalls away or is expelledby iilceration. Accord-ing to Brumpt, she firstquits the skin and then,falling to the ground,deposits her eggs. Thesubsequent develop-ment in so far as known,is Hke that of other fleas.The chigoe usuallyenters between the toes,the skin about the rootsof the iiails, or the soles
Text Appearing After Image:
95. Chiggers in the sole of foot of man. MansonsTropical Diseases. Permission of Cassell and Co. Siphonaptera, or Fleas 129 of the feet, although it may attack other parts of the body. Menserecords the occurrence in folds of the epidermis, as in the neighbor-hood of the anus. They give rise to irritationand unless promptly and aseptically removedthere often occurs pus formation and thedevelopment of a more or less serious abscess.Gangrene and even tetanus may ensue. Treatment consists in the careful removalof the insect, an operation more easily accom-plished a day or two after its entrance, thanat first, when it is unswollen. The ulceratedpoint should then be treated with weak car-bolic acid, or tincture of iodine, or dustedthoroughly with an antiseptic powder. Castellani and Chalmers recommend asprophylactic measures, keeping the house clean and keeping pigs,poultry, and cattle away therefrom. High boots should be used,and especial care should be taken not to go to a ground floor ba

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