. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 276 ORDER DIPTERA adults appear much like the house flies or the stable fly but have usually numerous prominent bristles and spines, the bristles (arista) of the antennae lack the fine hairs which are characteristic of most of the Muscidae. These insects show some very striking adaptations in their parasitic life, some of the species depositing their eggs directly upon the bodies of the caterpillars which are to be the hosts of the larvse. The larv« on hatching bore at once
. Agricultural entomology for students, farmers, fruit-growers and gardeners. Insects; Beneficial insects; Insect pests. 276 ORDER DIPTERA adults appear much like the house flies or the stable fly but have usually numerous prominent bristles and spines, the bristles (arista) of the antennae lack the fine hairs which are characteristic of most of the Muscidae. These insects show some very striking adaptations in their parasitic life, some of the species depositing their eggs directly upon the bodies of the caterpillars which are to be the hosts of the larvse. The larv« on hatching bore at once into the caterpillar and develo]) within its tissues. In cer-. FiG. 221.—Euphorocera claripennis, a parasite of the alfalfa caterpillar: adult and enlarged antenna of same; puparium—enlarged. (From Howard, Bur. U. S. Dept. Ag.) tain species the eggs are laid upon the leaves and depend for their entrance to a host insect upon the leaf being eaten by some herbivorous form and in this case it would se^m as if there would be some chance of the eggs being crushed or the lar\pe being destroyed in the process of swallowing. In one rather remarkable form the eggs are evidently deposited within the burrows of wasps which are stored with spiders. The TachinidcB follow the wasps as they drag their victims to the burrow and when the wasp enters they no doubt. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Osborn, Herbert, 1856-1954. Philadelphia ; New York : Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectb, booksubjectinsects
