. Report of observations of injurious insects and common farm pests, during the year ... : with methods of prevention and remedy . elight parts are of a bright green. (In my own specimens the greentint was not present.) The head round, flattened, with two knife- * Histoiie des Insectes, par M. de Reaumur, torn. vi. pi. 48, tig. 12, mem. MDccxLii. 1899] PtRouse fly. 61 shaped organs projecting from the mouth; antennfe very short, ciliated;eyes large ; ocelli three, on the top of the head. Upper side of thoraxdepressed ; suture noticeable ; scutellum commonly with hairs only atthe hind
. Report of observations of injurious insects and common farm pests, during the year ... : with methods of prevention and remedy . elight parts are of a bright green. (In my own specimens the greentint was not present.) The head round, flattened, with two knife- * Histoiie des Insectes, par M. de Reaumur, torn. vi. pi. 48, tig. 12, mem. MDccxLii. 1899] PtRouse fly. 61 shaped organs projecting from the mouth; antennfe very short, ciliated;eyes large ; ocelli three, on the top of the head. Upper side of thoraxdepressed ; suture noticeable ; scutellum commonly with hairs only atthe hinder edge. Abdomen obconical, hairy, more or less longer than the abdomen, of a brownish yellow tint (for neura-tion, see figure, p. 59). Legs hairy, each foot furnished with twoclaws, and each claw tripartite. By this formation of foot, the Orni-thomyia is easily distinguishable from the more commonly observedHippobosca equina, in which (see plate) each of the two claws withwhich each foot is furnished is only two-parted. One of these divisionsbeing (as figured below) large, strong, curved, and pointed at the. Foot of Hippobosca equina, showing double claws, central process, and longprickly bristle; also portion of side of claw of H. maciilata, showing parallel groovesand saw-edge—all much magnified. extremity; the other thicker, and much shorter and rounded at theextremity, forming a kind of thumb-like appendage to the chief divisionof the claws. In Ornithomyia (see plate) each foot is similarly furnished with twoclaws, but each of the claws (see also figure, p. 59) is three-parted. Ofthe two larger divisions, one is long, narrow, and tapering gradually tothe pointed extremity ; another of the divisions is almost as long, butis thicker and almost of the same width throughout to its bluntlyrounded tip. The third division, which originates at the enlarged baseof the main divisions, may be described as being formed for about halfits length of a narrow stem, and
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Keywords: ., bookauthorormerode, bookcentury1800, bookdecade1880, bookyear1884
