. Amis et ennemis de la ferme agricole : un texte-livre de science agricole . Les ravageurs agricoles ; les insectes bénéfiques ; insectes nuisibles. i68 LES AMIS ET ENNEMIS DE LA FERME AGRICOLE Il est particulièrement susceptible de se trouver dans les fleurs jaunes, d'attente pour capter les visiteurs papillon sans méfiance. La roue est un bug d'insectes prédateurs dans les états du Sud. Il est de bonne taille, d'être plus qu'un pouce de long, avec un bec et une crête curieux sur le thorax qui lui donne son nom commun. Il se nourrit en grande partie de chenilles, et appartient à la famille d'Assassin Bugs (Reduviidae). Deux Mouches à ailes du grand nombre de famil

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. Farm friends and farm foes : a text-book of agricultural science . Agricultural pests; Beneficial insects; Insect pests. i68 FARM FRIENDS AND FARM FOES It is especially likely to be found in yellow flowers, waiting to capture unsuspecting butterfly visitors. The Wheel Bug is a common predaceous insect in the Southern states. It is of good size, being more than an inch long, with a sharp beak and a curious crest on the thorax that gives it its common name. It feeds largely upon caterpillars, and belongs to the family of Assassin Bugs (Reduviidae). Two-winged Flies Of the great number of families of two-winged flies com- paratively few are predaceous. The most distinctive of these are the Robber Flies (Asilidse), a group of hawklike creatures, some of which may often be seen in open fields. Nearly a thousand distinct species are found in North America. The more familiar forms have powerful wings and long legs and abdomen. They commonly rest on low shrubs or plants whence they can readily pounce upon any flying insect that passes near. Honeybees are so often killed by them that in some Robber Fly regions these flies are called bee killers. Such victims are caught by the powerful legs, and quickly sucked dry by the voracious robbers. A few species bear a striking resemblance to bumblebees and wasps, from which they are at once distin- guished by having but one pair of wings. So far as their earlier stages have been described, the larvas of these flies seem to be largely predaceous also. They live in damp soil and rotting wood, apparently feeding upon the other insects found in such situations.. 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 work.. Weed, Clarence Moores, 1864-1947. Boston ; New York : D. C. Heath & Co.

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