Contributions from the Department of Zoology and Entomology Volume 10-13

Contributions from the Department of Zoology and Entomology Volume 10-13

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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. 1903 edition. Excerpt: ...and continuing onto the fourth, and fifth segments; the last three abdominal segments are often blackish' obscuring all stripes in that region. Male: Second basal cell of wing brown on its basal two-thirds and the fifth posterior more brown than in the female; last three segments of" the abdomen black, first four with a middorsal yellow stripe, on each side of which is a wider black one; and outside of the latter on segments three and four is an additional narrow black stripe. The three specimensof this sex I have present no variations. It looks much like the female and is easily associated with it. Habitat: A common species in June in all parts of the state. The males have been taken on various flowers. Chrysops Vittatus Wiedemann. Length 8-9 mm. Face, palpi and base of antennae yellow; thorax, dorsally with four bright yellow longitudinal stripes with brown intervals? separating them; scutellum yellow; hyaline triangle of the wing rather small occupying the apical part of the first three posterior cells and extending into the first and second submarginal in the region of the branching of the third vein; a hyaline streak in the second submarginal cell usually follows the posterior branch of the third vein toward the margin of the wing but does not reach this margin. Female: Frontal callosity yellow; first basal cell of wing brown, second slightly infuscated at base, otherwise hyaline, cross band very nearly attains the posterior margin; the fourth posterior cell except narrow apex, fifth posterior except at base and narrow apex and anal at apex brown, abdomen dorsally with four longitudinal black stripes; the two inner are pale on the first segment and the two outer on the first and second segments; ventrally yellow, darkened at apex, more

Product details

  • Paperback | 40 pages
  • 189 x 246 x 2mm | 91g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236517997
  • 9781236517999