The Zoologist; A Popular Miscellany of Natural History Volume 8

The Zoologist; A Popular Miscellany of Natural History Volume 8

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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. 1850 edition. Excerpt: ...after the impregnation of the female. On the 27th of April, 1849, I captured a female of Andrena Trimmerana. I observed the bee struggling and turning over and over on a gravel pathway, and picked it up: in doing so I observed a small insect take its flight, evidently from the bee: this I have no doubt was a male Stylops, its flight and white appearance exactly agreeing with Mr. Dale's description: unfortunately I could not succeed in capturing it. On examining the bee, I found a cocoon remaining between the abdominal segments, the cap of which was pushed off: this I recognised as being the cocoon of a male Stylops: the bee was also infested by two females. In fourteen days from the time of capture the little hexapods began to appear, at which time the bee died: these minute larvae I found had the power of existing without food from six to eight days in confinement, and would probably have lived even longer in their natural position. These parasites do not appear to infest any of the very pubescent species of bees, but there is one remarkable peculiarity worthy of observation: when the bee attacked is one of a species which undergoes its metamorphosis and arrives at the perfect state in autumn of the same year, passing the winter in a dormant state, the parasite undergoes its changes simultaneously with the bee; and in the case of such species as pass the winter in the larva state, the development of the Stylops is also retarded until the final change of the bee takes place, both arriving at maturity at the same period. Of the genus Halictus, I have met with infested individuals both in spring and autumn; so that of the genus Halictophagus there must be two broods in one season. The first stages of development in Stylops will probably ever more

Product details

  • Paperback | 204 pages
  • 189 x 246 x 11mm | 372g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236681231
  • 9781236681232