. Entomology for medical officers. Insect pests; Insects as carriers of disease. 160 ENTOMOLOGY FOR MEDICAL OFFICERS symmetrically-arranged, dark, round spots on the dorsum of the abdomen. It generally deposits its eggs in horse-dung, but also, according to Newstead, whose account of its develop- ment is here summarised, in musty grass-mowings. A female lays from 50 to 70 eggs, which are white, and are shaped somedeal like a banana with a broad groove along the shorter and straighter curvature: in warm weather they hatch in two or three days. The larva and pupa are not remarkably different fro
. Entomology for medical officers. Insect pests; Insects as carriers of disease. 160 ENTOMOLOGY FOR MEDICAL OFFICERS symmetrically-arranged, dark, round spots on the dorsum of the abdomen. It generally deposits its eggs in horse-dung, but also, according to Newstead, whose account of its develop- ment is here summarised, in musty grass-mowings. A female lays from 50 to 70 eggs, which are white, and are shaped somedeal like a banana with a broad groove along the shorter and straighter curvature: in warm weather they hatch in two or three days. The larva and pupa are not remarkably different from those of other Muscidce [cf. Figs. 53> 54) j the larva becomes full grown, if the pabulum be warm and moist and protected from light, in fourteen to twenty-one days; the pupal stage in Newstead's observations lasted nine to thirteen days. In unfavourable conditions, such as cold, drought, and exposure to bright light, the developmental stages are said by Newstead to be prolonged. //"i^wa^i^^/rt, Robineau-Desvoidy (a?/xa = blood ; /3/o? = way of life). In distribution, habits, and general appearance similar to Stomoxys, from which it is distinguished (Fig. 60). maxp epiph hypophl Fia. CO.—Head of Hcematohia. by the smaller head, by the shorter and rather coarser pro- boscis, by the long spatulate maxillary palps, and by the presence of a few hairs on the lower border of the antennal bristle. As in Siomoxys there are a few bristles at the proximal end of the 3rd longitudinal vein. Lyperosia, Rondani (Fig. 61) (Av7rv/oo'y = troublesome). In distribution and habits similar to Stovioxys, but not much. 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 Alcock, A. (Alfred), 1859-1933. London, Gurney & Jackson
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