. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. TAniYTttEcms, 111 JA//c. Fnc(! very loiisr mid narrow, more hroad helow, nliiiost frol(k'ii-y('ll(»w, lint without any lustr<\ I'alpi small, Ithickisli. AntenuiL', in conscciufnce of the ru(linintary condition of the second joint, apparently two-jointed, aj< in the nial<' of the fronns JldHrn'rmi.'^: the first joint elonjrated and somewhat swollen, of a brijrht dark-yeljow, hare on the under side, on tiie up|)or side covered witii hiack hairs; the rndinnMital second joint of the same color;


. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. TAniYTttEcms, 111 JA//c. Fnc(! very loiisr mid narrow, more hroad helow, nliiiost frol(k'ii-y('ll(»w, lint without any lustr<\ I'alpi small, Ithickisli. AntenuiL', in conscciufnce of the ru(linintary condition of the second joint, apparently two-jointed, aj< in the nial<' of the fronns JldHrn'rmi.'^: the first joint elonjrated and somewhat swollen, of a brijrht dark-yeljow, hare on the under side, on tiie up|)or side covered witii hiack hairs; the rndinnMital second joint of the same color; the third joint also extremely snndl, rounded or somewhat kidney-shaped, hrownish-black and only at the root yellow. The arista very slender, bare, half as lonjr as the tiiorax and abdomen taken to<retlier; it is black, oidy at the extreme tip white, and ends in a small, deep-black, rather rounded lamella, which is white at its extreme, somewhat attenuated, basis. Front nu'tallic- green, rather without lustre, covered with brown-jrray dust, which is oidy visible when viewed fmm the side. Cilia of the ]»osterior orbit black al)ove, yellowisli below. Tlun-ax metallic-prccii, usually with a more bronze or coj)per-colored or even violet mid- dle line ; it is rather shininir, covered, however, with a distinct browiMsh-yellow dust. Scutellum ai'd abdomen have the same color and dusted covering. ]Iypo]» pedunculated, black, ni)on the lower side more black-green, and covered with yellow dust ; the yellow, rather rounded ianielhe with not very long Idack hairs. Pleune with a covering of thick dark-yellow dust upon bronze-green ground. Fore cox:e bright yellow with almost gol- den-yellow dust, without any lustre anii the fore tibise. Hind femora liefore the ti]» with a single Itristle. Cilia of the teguhe black. "Wings tinged with gray. Tlie tip nf the fourth longitudinal vein is nciii" the tip of the third. Fcninle. It differs renmrkalily IVnni the male in color


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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864