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. 1908 Excerpt: ...the so-called style is thickened, forming one or two anteunal joints. Proboscis never markedly elongate; firm and horny, adapted for piercing, directed downward, or downward and forward; labella never fleshy; palpi composed of one or two joints. Abdomen composed of eight segments, the hypopygium and ovipositor usually ...
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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. 1908 Excerpt: ...the so-called style is thickened, forming one or two anteunal joints. Proboscis never markedly elongate; firm and horny, adapted for piercing, directed downward, or downward and forward; labella never fleshy; palpi composed of one or two joints. Abdomen composed of eight segments, the hypopygium and ovipositor usually prominent. Legs strong, bristly, of moderate length, rarely elongate and slender; tarsi strong; empodium bristlelike (31) or wanting, the pulvilli rarely vestigial. Squamae small. Wings when at rest lying parallel over the abdomen; basal cells long; two or three submarginal and five posterior (four in Townsendia and Leptopteromyia, 35) cells present; first and fourth posterior and the anal cells closed or open. (Figs. 73 and 74.) The family Asilidae, or Robber-flies is one of the largest and best known among diptera, including about three thousand species, distributed in more than one hundred and fifty genera. Many of the species are conspicuous for their large size, the largest measuring nearly two inches in length, while the smallest known species is over four millimeters. They are, perhaps, the most predaceous of all flies in their habits. The greater part of them rest upon the ground in wait for their prey, arising with a quick buzzing sound when disturbed, to alight a usually other flies and hymenoptera, but flying beetles, especially the Cicindelae, are often caught, and they are known to capture and destroy large dragonflies. In one instance that the writer observed, a female seized a pair of her own species, and thrusting her proboscis into the Fig. 76. Asilidae. 1, Leptogaster, wing; 2, Leptogaster, antenna; 3, Leptogaster, end of tarsus (claw mostly cut away); 4, Damalis occidentalis, antenna; 5, Dicranus jaliscoensis, claw; 6, Steno...
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Add this copy of Manual of North American Diptera to cart. $22.29, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
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