. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. LIMNOPIIILA 231 OIK' lino; the small cross-vein gently arcuated ; the end of tlie fifth vein strongly arcuated ; the long verticils of the antenna.', the coni|)aratively long feet, etc. 20. L. lenta O. S. % and 9 •—Ochracea, fronte canescente; antennre iiijirirt dense pubescentes; aliB iuiniaculat%; cellulis posterioribua quatiior. Ocliraceous, front grayish ; antennte of the male densely pubescent; wing3 immaculate; four posterior cells.
. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. LIMNOPIIILA 231 OIK' lino; the small cross-vein gently arcuated ; the end of tlie fifth vein strongly arcuated ; the long verticils of the antenna.', the coni|)aratively long feet, etc. 20. L. lenta O. S. % and 9 •—Ochracea, fronte canescente; antennre iiijirirt dense pubescentes; aliB iuiniaculat%; cellulis posterioribua quatiior. Ocliraceous, front grayish ; antennte of the male densely pubescent; wing3 immaculate; four posterior cells. Long. corp. — Syx. Liiimopliilu lenta 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1850, p. 241. Ocliraceous yellow ; palpi and antenna} (except the basal joints of the latter), brownish; the antenna) of the male, if extended ])ack\vards, would reach a little beyond the root of the wings ; the joints of the flagelluni are elongated-elliptical, and each of them i,< clothed on both sides with a dense pubescence; the verticils are but little longer than this pubescence ; !n the female there is no conspicuous pubescence, and for this reason the verticils, although short, are more distinct. The front and vertex are grayish, the former even with a slight silvery reflection. Thorax ocliraceous yellow, opaque above, without apparent stripes; liallores yellow; abdomen yellowish ; feet pale yellow; tips of th(^ tarsi, sometimes also the extreme tips of the tibiai, infuscated. Wings subhyaline, with a faint yellowish tinge ; veiri yellowish or yellowish-brown ; stigma pale, sometimes faintly iiifuscated at the cross-vein. Prtefurca comparatively short (not much longer tliaii the anterior branch of the second vein), strongly arcuated at its origin ; petiole of the first submarginal cell about the length of the great cross-vein; the marginal cross-vein is usually between the inner end of the first submarginal cell and the tip of the first longitudinal vein ; anterior branch of th
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectd, booksubjectinsects
