Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . a, larva ; b, pupa; c, adult. reckoned of some benefit, did they inhabit places frequented byinjurious insects ; but at best they are harmless,—unlike theirparents in this as in all other respects. Horses driven through districts badly infested by these insectsshould be furnished with a netting, and, if it is necessary to keepthe animals for any time exposed to attack, the fish oil and car-bolic acid mixture already recommended can be used to repelthe flies. It need be
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . a, larva ; b, pupa; c, adult. reckoned of some benefit, did they inhabit places frequented byinjurious insects ; but at best they are harmless,—unlike theirparents in this as in all other respects. Horses driven through districts badly infested by these insectsshould be furnished with a netting, and, if it is necessary to keepthe animals for any time exposed to attack, the fish oil and car-bolic acid mixture already recommended can be used to repelthe flies. It need be applied only in such places as the animalcannot conveniently reach with its tail, or which is not shelteredby a netting. Somewhat resembling horse-flies in appearance are themembers of the family Stratiomyiidce, or soldier-flies, so calledbecause of their often bright bandings of green and have the same general shape but rather longer antennae,with broader, much more flattened, abdomen. They are in any stage, and are referred to simply because of 344 AN ECONOMIC ENTOMOLOGY. Fig. Asilid fly.—Erax bastardi,larva, pupa, and adult. their resemblance to, and to distinguish them from, the horse-flies. Another series of large species we find among the robber-flies belonging to the family AsilidcE, and these are quitedifferent in appearance from any heretofore treated. The head isprominent, very hairy, with rather short, several-jointed antennae, and with a short, stout proboscis,which is formed for piercing. Thebody is robust, also covered with hair,and the abdomen is long, slender, andcylindrical, tapering very gradually tothe tip. The wings are long and nar-row, the legs moderately long and verypowerful, densely clothed with spines,while the tips of the tarsi are suppliedwith unusually long and stout insects are called robber-fliesfrom their habit of pouncing upon,piercing, and sucking the juices ofother insects in mid-air, while hold
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
