Leaf-Hoppers and Their Natural Enemies

Leaf-Hoppers and Their Natural Enemies

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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. 1905 edition. Excerpt: ...Queensland; a single example bred from the same batch of eggs that produced the pair of Fulgoridicida afichroma. Echthrogonatopus gen. nov. Head shaped much as in Echthroa'ryi7nus, the face inflexed, the eyes large, the space, where least, between them, much less _than the width of one of these; face between the eyes with very minute surface sculpture, the lateral ocelli near the eye margins, the eyes themselves sparsely hairy, the hairs not very easily seen. Antennae inserted far below the middle of face, scrobes elongate, scape simple, elongate, and funicle six-jointed, the funicle joints wide and short, the club large and about as long as the funicle, the pedicel about as long as the three basal funiclar joints. Mandibles distinctly tridentate, the maxillary palpi moderately long, 4-jointed, the apical joint the longest, the labial palpi with three short joints, which together are about half as long as the maxillary. Mesonotum with short white decumbent hairs or setae; the axillae touching, or nearly touching, inwardly. The scutellum has a very dense sculpture and is extremely dull for the most part, and contrasts strongly with the metallic and finely punctured mesonotum. The wings have an obliquely transverse, hairless line (sometimes incomplete or interrupted) extending from the stigmal vein, which is short and clavate, the post marginal vein also very short, the marginal always longer than the stigmal, sometimes two or three times as long, marginal fringe short. Male differs in its much smaller eyes so that the front between these is consequently wide, wider than one of the eyes. The face is metallic like the mesonotum, the antennae are much more elongate than those of the female, the pedicel subequal to the first of the six funicle...show more

Product details

  • Paperback | 152 pages
  • 189 x 246 x 8mm | 286g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236757033
  • 9781236757036