Monographs of the Diptera of North America Volume 4

Monographs of the Diptera of North America Volume 4

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1869 edition. Excerpt: ...Sc. Phil. 1861, p. 290. Brownish-gray; vertex brownish in the middle, with a dark line extended over the front; the latter yellowish on the sides, along the orbits of the eyes; antennoe and palpi blackish-brown; the space occupied by the usual stripes on the mesonotum is brownish, with three dark brown lines; the intermediate one is especially distinct; the lateral ones are curved anteriorly and extended beyond the suture posteriorly; the humeral region is yellowish; pleurae hoary below, with a brown stripe between the collare and the root of the halteres; metathorax brownish, with a hoary bloom; halteres yellowish, sometimes infuscated; feet brownish, tip of the femora broadly, tip of the tibiae only a little infuscated; abdomen brown, the lateral margins, as well as those of the single segments, paler; forceps of the male reddish. Wings slightly tinged with brownish; cross-veins with hardly perceptible brownish clouds. Hab. Washington, D. C.; New Rochelle, N. Y.; Newport, II. I.; in June, also in August and Scptember; always near water. Gen. XIX. CHIONEA. Xo wings. Antenna; 6-jointed, structure abnormal; feet stout, hairy: abdomen short; last segment very large, subglobnlar, inclosing the basis of the forceps; the latter comparatively large and strong, with strong claw-shaped appendages; ovipositor pointed; the upper and lower valves divaricated at the basis. Head rounded, front convex; rostrum short; palpi with four short joints; first joint of the antennae cylindrical, elongated; the second of equal length, club-shaped at the tip; the third short conical; the remainder of the antenna slender, filiform, with three joints;' joints of the scapus pubescent, those of the flagellum with rather long verticils. Thorax comparatively small; the...show more

Product details

  • Paperback | 130 pages
  • 189 x 246 x 7mm | 245g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236607538
  • 9781236607539