The New Nature Library Volume 2

The New Nature Library Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... case, as a considerable series of specimens in my possession showed. The incident reveals that in classification hard and fast lines, based upon the character of a single organ, can not be always adhered to. There is scarcely any generalization in reference to organic structures which students have made which has not been found with the increase of knowledge to have its limitations. While all this is true, it is nevertheless also true that, so far as the lepidoptera of the United States and the countries of British North America are concerned, the old distinction between the two suborders, based upon the form of the antennae, holds good, with the sole exception of the insects belonging to the genus Megathymus, which are by many authors classified with the Castniidw, and by others with the Hesperfidw. ln the "Butterfly Book" I have left these insects with the Hesperiidaz. Leaving them out of sight, we may say that all lepidoptera found in the region with which this book deals, and which do not possess clubbed antennae, are moths. The easiest way for the beginner who lives in the United States, or Canada, to ascertain whether the insect before him is a moth, is to first familiarize himself with the structure of the antennae of butterflies, and then by comparison to refer the specimens before him to their proper suborder. Moths undergo metamorphoses analogous to those through which butterflies pass. They exist first in the embryonic form as eggs. When the eggs hatch the insects appear as larvze, or caterpillars. They are then, after undergoing a series of molts, transformed into pupa, or chrysalids, which may be naked, or may be provided with an outer covering, known as the cocoon, which is more or less composed of silk. more

Product details

  • Paperback | 288 pages
  • 189 x 246 x 15mm | 517g
  • United States
  • English
  • black & white illustrations
  • 1236845633
  • 9781236845634