Handbook of medical entomology . pore near each posterior corner 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 aquatic. Acarina 267 Palpi small, three segmented, adhering for some distance to the lip;ventral suckers at genital opening or near anal opening usuallypresent; no eyes; tarsi often end in suckers; beneath the skin onthe venter are seen rod-like epimcra that support the legs; body often entire


Handbook of medical entomology . pore near each posterior corner 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 aquatic. Acarina 267 Palpi small, three segmented, adhering for some distance to the lip;ventral suckers at genital opening or near anal opening usuallypresent; no eyes; tarsi often end in suckers; beneath the skin onthe venter are seen rod-like epimcra that support the legs; body often entire. Adults frequently parasitic SARCOPTOIDEA. f. With trachea?; no ventral suckers; legs ending in claws; bodydivided into cephalothorax and abdomen; the female with aclavate hair between legs I and II. Usually not parasitic on birds and mammals TarsonemiDjE g. Hind legs of female ending in claw and sucker as in the other pairs PEDICULOIDINiE To this sub-family belongs the genus PediculoidesP. ventricosus is described on page 155. Margaropus winthemi, male. AfterNuttall and Warburton. Margaropus and Nuttall and War-burton. gg. Hind legs of the female end in long hairs Tarsonemin.*; Tarsonemus intectus Karpelles, normally found upon grain,is said to attack man in Hungar\ and Russia. Otherspecies of the genus affect various plants ( fig. 150, g).ff. Without tracheae; no such clavate hair. g. Genital suckers usually present; integument usually withoutfine parallel lines,h. Legs short, without clavate hair on tarsi I and II. On insects Canestrinid^. hh. Legs longer, with a clavate hair on tarsi I and II, Not normally parasitic except on bees i Dorsal integument more or less granulate; claws ver>^ weak,almost invisible; some hairs of the bod}^ plainly feathered; ventral apertures large Glyciphagus Her. This genus occurs in the United States. In Europe themites have been found feeding on all sorts of are known as


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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915