Show V Dont Don't Swat the Outdoor Fly I He May Be Your Friend WASHINGTON Aug 7 NE NEA E I Service Service Fly Fly swatting is strictly an indoor sport At least it should be for tor most of the species that buzz about the great open spaces are beneficial to mankind W. W v. v R. R Walton n of the department of agricultures agriculture's bureau of entomology entomology ogy declares that the worthy kinds of flies tIles are in the majority over the harmful ones The government government government govern govern- ment has even Imported certain species to serve agriculture Such flies tIles deserve protection not swat swat- ting The beneficent flies mes get in their good work by preying upon all sorts of caterpillars miscellaneous bee beeS ties and other bugs which would eat so much vegetation that they would put mankind out of business In a few years If It the th-e flies tIles didn't destroy countless millions of ot them each year AN IDEA FOR JONAH The female flies tIles attend to this business of constructive destruction destruction destruction tion by injecting their eggs into the hapless victims' victims bodies When the eggs hatch the young flies tIles proceed to devour the caterpillars and beetles beetles bee bee- ties from within Some other flies actually Jab their young into the bu bugs s after the young already are ha hatched Other flies are re natural beasts of prey They go foraging and kill their food outright Just how many species of fly L there are In the world Walton Valton hesitates to say except that there are thousands Ui In this country and other thousands In the tropics Some of the beneficent flies look so much like the common house variety that only an expert can tell them apart On the other hand there are ale some species that look so little like the ordinary fly that only an expert can recognIze them as flies lies at all FRESH AIR LOVERS But all of ot the ones which are friends of man have this common characteristic they characteristic they are healthy loving liberty-loving outdoor insects They TIrey cant can't stand confinement and they dont don't muss around in the dirt like their relatives horse and house So whenever a fly Is discovered indoors it always is a safe bet that he 13 Is there for no good purpose since he is a bad actor and has filthy habits But although all indo indoor r files flies are are bad that is no sign that all outdoor outdoor outdoor out out- door ones are ale good Theres There's the tsetse fly for instance which goes about heavily laden with germs of sleeping sickness Fortunately he cant can't live In this climate Then there is the Hessian fly one of the Four Horsemen on the wheat belt and the fruit fly which pesters horticulturists hor hor- The aim of the entomologist when he has a certain pest to deal with is to find some other insect to destroy destroy de tie- stroy it Now he seeks seeks' something to destroy the harmful flies files |