| glass-crab | <zoology> The larval state (Phyllosoma) of the genus Palinurus and allied genera. It is remarkable for its strange outlines, thinness, and transparency. See Phyllosoma. Source: Websters Dictionary (01 Mar 1998) |
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| crab | 1. A crustacean, many varieties of which are edible. 2. An insect, the crab louse, Pthirus pubis. (05 Mar 2000) |
| crab hand | An infection caused by erysipelothrix rhusiopathiae that is almost wholly restricted to persons who in their occupation handle infected fish, shellfish, poultry, or meat. Three forms of this condition exist: a mild localised form manifested by local swelling and redness of the skin; a diffuse form that might present with fever; and a rare systemic form associated with endocarditis. (12 Dec 1998) |
| crab yaws | <dermatology> Yaws of the feet with keratoderma of the palms and soles and ulcer formation. Synonym: crab yaws, dumas, tubba, tubbae. (05 Mar 2000) |
| bark louse | <zoology> An insect of the family Coccidae, which infests the bark of trees and vines. The wingless females assume the shape of scales. The bark louse of vine is Pulvinaria innumerabilis; that of the pear is Lecanium pyri. See Orange scale. Source: Websters Dictionary (01 Mar 1998) |
| sea louse | <zoology> Any one of numerous species of isopod crustaceans of Cymothoa, Livoneca, and allied genera, mostly parasites on fishes. Source: Websters Dictionary (01 Mar 1998) |
| sea wood louse | <zoology> A sea slater. Source: Websters Dictionary (01 Mar 1998) |
| typhus, epidemic louse-borne | The classic form of typhus, caused by rickettsia prowazekii, which is transmitted from man to man by the louse pediculus humanus corporis. This disease is characterised by the sudden onset of intense headache, malaise, and generalised myalgia followed by the formation of a macular skin eruption and vascular and neurologic disturbances. (12 Dec 1998) |
| typhus, louse-borne | See Typhus, epidemic. (12 Dec 1998) |
| flea-louse | <zoology> A jumping plant louse of the family Psyllidae, of many species. That of the pear tree is Psylla pyri. Source: Websters Dictionary (01 Mar 1998) |
| louse | Origin: OE. Lous, AS. Ls, pl. Ls; akin to D. Luis, G. Laus, OHG. Ls, Icel. Ls, Sw. Lus, Dan. Luus; perh. So named because it is destructive, and akin to E. Lose, loose. <zoology> 1. Any one of numerous species of small, wingless, suctorial, parasitic insects belonging to a tribe (Pediculina), now usually regarded as degraded Hemiptera. To this group belong of the lice of man and other mammals; as, the head louse of man (Pediculus capitis), the body louse (P. Vestimenti), and the crab louse (Phthirius pubis), and many others. See Crab louse, Dog louse, Cattle louse, etc, under Crab, Dog, etc. 2. Any one of numerous small mandibulate insects, mostly parasitic on birds, and feeding on the feathers. They are known as Mallophaga, or bird lice, though some occur on the hair of mammals. They are usually regarded as degraded Pseudoneuroptera. See Mallophaga. 3. Any one of the numerous species of aphids, or plant lice. See Aphid. 4. Any small crustacean parasitic on fishes. See Branchiura, and Ichthvophthira. The term is also applied to various other parasites; as, the whale louse, beelouse, horse louse. <zoology> Louse fly, any one of numerous species of mites which infest mammals and birds, clinging to the hair and feathers like lice. They belong to Myobia, Dermaleichus, Mycoptes, and several other genera. Source: Websters Dictionary (01 Mar 1998) |
| louse-borne typhus | A severe acute disease with prolonged high fever up to 40 |
| louse flies | Pupiparous, dorsoventrally flattened dipterous ectoparasites of the family Hippoboscidae. See: Hippobosca, Melophagus. (05 Mar 2000) |