Entomological News, and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia Volume 7

Entomological News, and Proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia Volume 7

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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. 1896 edition. Excerpt: ...posterior cross-vein distant about one and one-half times its own length from the posterior margin, forming a right angle with the third longitudinal vein; apical segment of the fourth vein perfectly parallel with the third and terminating in the tip of the wing; tegula? white, with pale cilia; halteres lemon-yellow. Female.--Length 2 mm.; length of wings 2 mm. Face considerably broader and less brilliantly metallic than in the male, with a thicker layer of pale dust; first and second antennal joints like those of the male; third joint hardly longer than broad, with the same kind of glistening gray hairs as in the male; the apically inserted arista strongly pubescent, much longer than that of the male, being nearly two-thirds the breadth of the head in length and exhibiting the same S-shaped curvature as the elongated third joint of the male antenna. The white beard of cilia on the inferior orbit nearly as conspicuous as in tne male; the black stripe on the fore femora less distinct; all the tarsi black from the tip of the first joint. Wing not narrowed at the base; anal angle prominent; posterior crossvein somewhat further removed from the margin than in the male. Described from seven males and one female taken in sweepings in the following localities: Milwaukee, Wis., June 26: Chicago, lli., June 6; Whiting, Ind., July 13. Thinophilus pectlnifer n. sp. Mate.--Length 5.5 mm.; length of wing 5 mm. Proboscis greatly swollen, dark colored, covered with a thick layer of gray dust; palpi very large, flat, of a clear yellow color, with a very delicate layer of silvery dust, and with several prominent black hairs scattered over their surfaces. Face short and broad, its lower border far above the lower edge of the eyes; widening somewhat below; with two...show more

Product details

  • Paperback | 130 pages
  • 189 x 246 x 7mm | 245g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236557956
  • 9781236557957