Handbook of medical entomology . is of no value whatever. Chloride of lime, carbolic acid, orformalin may be used, but are more expensive. Other intestinaldiseases demand similar precautions. Stomoxys calcitrans, the stable-fly—It is a popular belief thathouse-flies bite more viciously just before a rain. As a matter of Stomoxys calcitrans, the Siable-fly i6i fact, the true house-flies never bite, for their mouth-parts are notfitted for piercing. The basis of the misconception is the fact that atrue biting fly, Stomoxys calcitrans (fig. no), closely resembling thehouse-fly, is frequently found
Handbook of medical entomology . is of no value whatever. Chloride of lime, carbolic acid, orformalin may be used, but are more expensive. Other intestinaldiseases demand similar precautions. Stomoxys calcitrans, the stable-fly—It is a popular belief thathouse-flies bite more viciously just before a rain. As a matter of Stomoxys calcitrans, the Siable-fly i6i fact, the true house-flies never bite, for their mouth-parts are notfitted for piercing. The basis of the misconception is the fact that atrue biting fly, Stomoxys calcitrans (fig. no), closely resembling thehouse-fly, is frequently found in houses and may be driven in ingreater numbers by muggy weather. From its usual habitat thisfly is known as the stable-flv or, sometimes as the biting house-fly. Stomoxys calcitrans may be separated from the house-fly by the useof the key on p. 145. It may be more fully characterized as follows: The eyes of the male are separated by a distance equal to one-fourth of the diameter of the head, in the female by one-third. The. 110. stomoxys calcitrans; adult, larva, puparium and details, (xs). After Howard. frontal stripe is black, the cheeks and margins of the orbits silvery-white. The antennae are black, the arista feathered on the upperside only. The proboscis is black, slender, fitted for piercing andprojects forward in front of the head. The thorax is grayish, markedby four conspicuous, more or less complete black longitudinal stripes;the scutellum is paler; the macrochaetas are black. The abdomen isgray, dorsally with three brown spots on the second and third seg-ments and a median spot on the fourth. These spots are morepronounced in the The legs are black, the pulvilli wings are hyaline, the vein M1 + 2 less sharply curved than inthe house-fly, the apical cell being thus more widely open (cf. ). Length 7 mm. This fly is widely distributed, being found the world over. It wasprobably introduced into the United States, but has spread to all i6
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
