. A manual for the study of insects. Insects. DIPTERA. 465 earth, fungi, and decaying wood. They feed on decaying animal and vegetable matter and are said to be predaceous also. The pupae are V112+1X Fig. 565.—Wing of Thereva. The family is a comparatively small one, including but few genera and species. Family SCENOPINID^ (Scen-o-pin'i-dae). The Window-flies, The window-flies are so-called because the best-known species are found almost exclusively on windows ; but the conclusion that these are the most common flies found on windows should not be drawn from this name; for such is not t
. A manual for the study of insects. Insects. DIPTERA. 465 earth, fungi, and decaying wood. They feed on decaying animal and vegetable matter and are said to be predaceous also. The pupae are V112+1X Fig. 565.—Wing of Thereva. The family is a comparatively small one, including but few genera and species. Family SCENOPINID^ (Scen-o-pin'i-dae). The Window-flies, The window-flies are so-called because the best-known species are found almost exclusively on windows ; but the conclusion that these are the most common flies found on windows should not be drawn from this name; for such is not the case. These flies are of medium size, our most common species measuring one-fourth inch in length. They are usually black, and are not clothed with bristles. The thorax is prominent, and the abdomen is flattened and somewhat bent down, so ^^g^u that the body when viewed from the side ^p% presents a humpbacked appearance (Fig. 566). When at rest, the wings lie parallel, one over the other, on the abdomen ; when in this position they are very inconspicuous. There are three ocelli. The antennae are three-jointed ; the first and second segments are short, the third is long and bears neither a style nor a bristle (Fig. 567). Fig. 566. Fig. 567. 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
