A Revision of the Ants of the Genus Formica (Linne) Mayr

A Revision of the Ants of the Genus Formica (Linne) Mayr

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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. 1913 edition. Excerpt: ...they form four longitudinal rows as far back as the ocelli, on the thoracic dorsum, coxae, border of the petiole, and surface of the gaster. On the last they are particularly conspicuous on account of their equidistant arrangement and contrasting color. They are easily rubbed off. A few hairs are occasionally present on the gula but usually entirely absent. Anterior border of scape with a row of delicate, suberect, tapering hairs. Tibiae covered with very short, stiff, suberect hairs. Eyes hairless. Head, thorax, and petiole deep yellowish red, mandibles and clypeus somewhat darker, ocellar region often fuscous. In small workers the front, vertex, thoracic dorsum, and petiole are spotted with black. Gaster black, with only the anal region yellowish. In the largest workers the legs are red throughout, in intermediates the femora and tibiae are brownish, in the smallest workers the infuscation extends also to the coxae. Antennae red, funiculi more or less infuscated toward the tip. FEMALE. Length 4-4.5 mm. Head resembling that of the worker. Thorax distinctly narrower than the head. Petiole narrow, thick at the base, both its anterior and posterior surfaces alike convex, its dorsal border sharper than in the worker; seen from behind variable, in some specimens evenly rounded, in others somewhat produced upward in the middle. Sculpture like that of the worker. Whole insect, including the antennae and legs, clothed with delicate white hairs, which are longer and more abundant than in the worker and not clavate though obtuse. These hairs are conspicuously long and suberect on the front, gula, thorax, petiolar border, gaster, antennal scapes, and legs. In addition to these hairs the body and appendages are invested with microscopic, white...show more

Product details

  • Paperback | 70 pages
  • 189 x 246 x 4mm | 141g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236924665
  • 9781236924667