TACHINID/C. Swift Flics. These flies are parasitic on other insects, particiihirly on caterpillars, on 

 wliich thev lav their e^^s. Their larva- live and transform within tlie bodies of tiic caterpillars and thereby 



destrov the latter. 



TRICHOPODA. Hycbrovi' Fly. 



T. formosa. js i" : ^'lest black with white stripes : body red : wing black with white stripes. 



T. laiiipcs iV i'l- ; l'l"'-"k with white lines on chest ; wing black, hind edge clear. 



T. pciiiiipcs. ':t in. : chest gold with l)lack stripes ; body rust yellow : hind legs feathered. 



'/'. cilipcs. \i ill-: blackish brown : body reddish : wings lined ; hind legs feathered. 



/". hirtipcs. 'fin.: black; first rings of body reddish ; wing clear edged. 



T. plumipcs. Yi, in. : black : hind edge of wing white : hind legs feathered. 



bod\' lii'lit red with 



TACHINA. Snift Fly. 



1. 7'. {y/iri>/ia) //r.v/r/v. 'j in.; blue black: body dark chestnut; head with yellow- 



hair ; wing light brown : scales brownish. 



2. 7'. (Jiirii/ia) a/o-ens. % in. : chest greenish l)lue black ; l>otly deep black : eyes red 



brown : liead and shoulder brassy yellow ; scales white. 



3. 'f. (//ys/r/c/a) viv/ifa. '2 i"- ; chest gray with black stripes; 



black spots and hair ; legs light red. 



4. 7". abriipta. jj,; in. ; chest gray with dark stripes ; body orange, 



with a blackish dotted stripe ; legs black. 

 V T. dis'iiiHcta. --sin.: chest gray with black lines : body lilaek 

 and white banticd. 



6. T. (.Se>io»!ctop/a) iiiilitaris or .\cmoi\ca htca?it\c. Tlieir 



larv;e feed on the army worm ami destroy it. 



7. /'. (Lvdclla) ilorvplior.c. Their larva' feed on the potato 



beetle. 



(51) 



