. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 266 Hominoxious Arthropods hh. Mandibles in the male chelate (fig. 158 j), in the female long, styliform. Parasitic on birds Dennanyssus Dug. Two species of importance may be noted, D. hirundinus and D. gallinae. The latter (fig. 51) is a serious pest of poultry, sometimes attacking man, causing itching and soreness, ee. Anal plate absent. In lungs and air passages of some mammals. Halarachnin^. dd. Free or attached to insects, rarely on vertebrates. e. First pair of legs inserted within the s
. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. 266 Hominoxious Arthropods hh. Mandibles in the male chelate (fig. 158 j), in the female long, styliform. Parasitic on birds Dennanyssus Dug. Two species of importance may be noted, D. hirundinus and D. gallinae. The latter (fig. 51) is a serious pest of poultry, sometimes attacking man, causing itching and soreness, ee. Anal plate absent. In lungs and air passages of some mammals. Halarachnin^. dd. Free or attached to insects, rarely on vertebrates. e. First pair of legs inserted within the same body opening as the oral tube; genital apertures surrounded by the stermmi. On in- sects Uropodid/e. Oe^ru'iaJ- 154. Rhicephalus sanguineus, male. After Nuttall and Warbur- ton. ee. First pair of legs inserted at one side of the mouth opening; male genital aperture usually on the anterior margin of the sternal plate Gamasidae. This family contains a number of genera, some of which are found upon mammals, though the majority affect only other artho- pods. One species, Laelaps stabularis, frequents the bedding in stables, and in one instance at least, has occasioned irri- tation and itching, in man. bb. No distinct spiracle in the stigmal plate on each side of the body. c. Body usually coriaceous, with few hairs, with a specialized seta arising from a pore near each posterior comer of the cephalothorax; no eyes; mouth parts and palpi very small; ventral openings of the abdomen large; tarsi without sucker. Not parasitic ORIBATOIDEA. cc. Body softer; without such specialized seta. d. Aquatic species HYDRACHNOIDEA. dd. Not Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Riley, William A. (William Albert), b. 1876; Johanssen, Oskar Augustus, 1870-. Ithaca, N. Y. , The Comstock Publishing Co
Size: 1279px × 1954px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
