. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. lf>7 I'lU'c iiut very hrntid fur a fciiiiilc. snmcwlint clcvntt'd, ii|inii its larirtT upper purl willi an improsctl nrHldlc lint-; the >iiiallir, cdii- vcx liiwcr part is srparali'il IVmiii the upper part liy a transver>« swelliuf?, iuniiiiplelc in its niitldle ; the dense, almost silvery-wliilo dust, enneeals a jrreat deal of tlie ^ruund-eolor of the f'aee, An- tenuiu Idaek. The third joiut with a short, liut sharp lip; thu arista rather strong', with a very short lait dis
. Monographs of the Diptera of North America [microform]. Diptera; Insects; Diptères; Insectes. lf>7 I'lU'c iiut very hrntid fur a fciiiiilc. snmcwlint clcvntt'd, ii|inii its larirtT upper purl willi an improsctl nrHldlc lint-; the >iiiallir, cdii- vcx liiwcr part is srparali'il IVmiii the upper part liy a transver>« swelliuf?, iuniiiiplelc in its niitldle ; the dense, almost silvery-wliilo dust, enneeals a jrreat deal of tlie ^ruund-eolor of the f'aee, An- tenuiu Idaek. The third joiut with a short, liut sharp lip; thu arista rather strong', with a very short lait dislinet pulit seeuee. Front Itri^iht nielallie hlue-frreen. The cilia on the uppi'r orliit lilaek. on ihe entire lateral and lower orl)its white. 'I' n»e- tallie-^rreen, only on the lore and lateral luariiin with a litthi whitish dust, upon the niichllu with a not very sharply detined longitudinal stripe, which in some directions ap)»<'ars more l)laare. On the segments of the al)doineii the two lirst thirds have a dark, the last third a more ))ale color; the color of the former i)art shifts from black, throngli bronze- brown into a boatitifiil dark vi(det ; on the lust third the color is chielly metallic-green, nevertheless it changes on the anterior part into stccl-l)lue, and on the hind nnirgin of the segment into golden- green or almost, a co|)pery color ; on the lateral margin the last third of the segments is coveri'(| with winte dust. Coxa' Ijlack with a rather dusky-green lustre; the forenu)st with white dust, clothed with delicate white little hairs, and at the tip wiili a few black bristles. Feet black; femora, with green .K.^tre; knees brownish-yellow ; this coloring extends on the fore tibiii; as far as the middle, on the middle tibhe as far as the first third, while on the hind feet it is confined to the tip of the knee. The femora liave on the under side from the basis almost as far as the tip, erect, but short, whitish hairs ; otherwise their hair is b
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864
