. An account of British flies (Diptera). Diptera -- Great Britain. 202 AN ACCOUNT OF BRITISH FLIES. brown; in the ? the antennas are brown, with yellow base and yellow bands; first eight joints oval, next six elliptical and long. Wings slightly yellowish towards costa in the ? . Legs tawny, dark at the tips of the femora, tibiae, and tarsi; anterior femora armed with seventeen spines, middle with four, posterior with three; a thick bristle on side of hind plantse. Length, i to 2 lin. Common and generally distributed; often in large clouds over stagnant water. C. niorio, F. /-. /• , T? ] C. lit
. An account of British flies (Diptera). Diptera -- Great Britain. 202 AN ACCOUNT OF BRITISH FLIES. brown; in the ? the antennas are brown, with yellow base and yellow bands; first eight joints oval, next six elliptical and long. Wings slightly yellowish towards costa in the ? . Legs tawny, dark at the tips of the femora, tibiae, and tarsi; anterior femora armed with seventeen spines, middle with four, posterior with three; a thick bristle on side of hind plantse. Length, i to 2 lin. Common and generally distributed; often in large clouds over stagnant water. C. niorio, F. /-. /• , T? ] C. liter. Mg. C femorafus, F. = -; ' & C. rufitarsis, Mg. \C. ar>iiafiis, Mg. Shining black. Antennce in S ^vith plumes glistening white towards their tips. Wings slightly milky, with brownish tinge; veins pale brown. Legs tawny; tarsi pale; joints, as usual, darker near their apex; hind femora thickly spinose beneath, slightly spinose above; long and incrassate; in the ^ the claws are slender, and of equal length on all the tarsi; in the ? those of the anterior tarsi are equal; on the hind tarsi one claw is four times the length of the other. Length, i to li lin. A common species, and met with in most places; subject to great variation, twelve distinct varieties being described by Winnertz. Additional Notes on Chiroiwnuis larvce. Some notes have been kindly placed at my disposal by Mr. Swainson, , those concerning the supposed annelid Compontia cruciformis (of Johnston), which is now shown to be a Chironomus larva, and which, from the figure sent, is evidently the same as the. Fig. 43. — Compontia cruciformis. Probably the larva of T. Fraucnfeldi. larvae found by me in Guernsey (p. 171), being particularly interest- ing. I append the more important parts of Mr. Swainson's notes : "In October last, on our Golf Links at St. Anne's-on-Sea, I found several larva: of Chironomus, fully grown, in its splendid blood-red colour. These I kept during the winter, and watch
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherlondo, bookyear1892
