HOUSEHOt.D AND CAMP INSECTS 



23 



The closely allied bottle fly, Lu cilia sericata Meign., 

 winters as larvae and pupae and flies in early spring before Chry- 

 somyia. It breeds in decaying animal matter, the preoviposition 

 period in summer being 5 to 9 days. The tgg stage lasts less than 

 24 hours, pupae being formed in 3 to 9 days after hatching. The 

 period from egg to adult is 9 to 21 days.°^ 



These blow flies, bottle flies or flesh flies, as they are variously 

 called, breed in a considerable variety of animal matter, and their 

 presence in any numbers would be presumptive evidence of a 

 moderately near breeding place. Burning carcasses or burying 

 them to a depth of at least 2 feet is advised. A few inches of soil 

 packed well over a carcass will prevent infestation, though not 

 emergence of flies from infested carcasses. Wounds should be 

 protected from flies, the best larval destroyer being chloroform and 

 the best protective pine tar."^*^ 



Fruit Flies" 



These light brown flies, only about one-eighth of an inch long, are 

 most commonly found about the pomace of cider mills and on 

 overripe or partly decaying fruit. They are attracted by fermented 

 liquids, such as wine, cider, vinegar and beer, aad may frequently 

 be observed on the sides of jars containing preserved fruits. There 

 are two species which appear to be most abundant. It is very diffl- 

 cult to keep these insects out of houses on account of their small 



Fig. 4 Fruit fly: a, adult fly; b, antenna; c, base of tibia and first tarsal joint; 



d, puparium, side view; e, same dorsal view; /, larva; g, anal segment of same; a, d, 



e, f, much enlarged; h, c, g, still more enlarged. (After Howard, U. S. Dep't Agr. 

 Div. Ent. Bui. 4. n. s. 1896) 



55 Bishopp. Jour. Econ. Ent., 8:326. 1915. 

 5fi Bishopp. Jour. Econ. Ent., 8:328-29. 1915. 

 5'^Drosophila ampelophila Loew and D. a m o e n a 



Loew. 



