ENTOMOLOGY

CHAPTER IXCommon ~lies and How to 'l'ell Them Apart 1C. T. GreeneOnly a few of the very 'common flies have been included in this chapter;the flies that are likely to appear near any house or in any camp.All of them may be attracted by the odors of fresh and cooking foods.In the following pages are presented two tables, one to separate the differentspecies of the adult flies, and the other to separate the differentlarvre or maggots of the flies. All the terms for the different parts ofthe flies and maggots have been made as plain as possible so that theSucforia/ Type./V1ourH f'ARr.s.FIG. IO.-Mouth parts of fiies: (1" Suctorial type; b, biting type. (Greene.)tables can be used by a non-entomologist. In the {irst table for the adultflies is given the style of the mouth-parts (see fig. 10), that is, whetherthey are adapted for biting or are simply suctorial, then the commonname is given, and then the scientific name. In the second table the larvreor maggots can be separated into different species. Under the name ofeach species, the larva or maggot is described in further detail and heremention is made as to where the species will breed.1 This lecture was presented September 9, and issued September 11. 1918. It .hasbeen somewhat modified.138