ORDER Dll'! 



131 



Family Sarcophagidae. 



tie <>f the antennae plui 



willi tbi 



i !1 only slightly 



tout 



■in., the 

 flesh-fly - black, 



with the thorax Btreaked 

 with gray, and the abdomen 

 checkered with whitish; it 

 is vi-. 



batched before thej are laid. 

 Tact nia Rili 

 Family Tachinidae — Bristle 

 of the antennae bare, or with 

 si very abort pubescence; thorax Bhort; Aral posterior cell < 

 or only slightly opened; legs short. Larva- parasitic in caterpillars 



n 'W^i 



Fia. 154. Sarcophaga a a rracenice. e, tly: <r. 



i: h. pup i ;/. head ; e, end <>f 



body; f. Bpiracle or larva; i, antenna; h, 

 foot of tlv. -After Riley. 



Km. 155.— Tachlna tly. un<l larva. 



and other insects, living <>n the fat and juices of tln-ir host; many 

 injurious caterpillars being destroy ed bj tb 



Family Dexidae rhe species differ from those of tin Tachinidffi 

 in having the bristle of tin- antennae either pubescent or plun 

 and from the Muscidae in having the abdomen b 

 ana' is Say. 



■lily (Estrida?. Antenna' inserted in round the middle 



part of the face exceedingly narrow ; the op< uing of the mouth verj 

 small; the month- parts rudimentary. Larva usually very tl 

 with a spiny skin. The ox bot-fly l // 



from June to September, the worms occurring dm '• in 



the summer in tumors on the backs of cattle, until in July th< j 

 to th<' ground; they remain in the pupa cas< . 

 gots oi the horse bot-fl 

 mouth-hooks to tin of thr horse's stomach. 



Family Piatypezidae. — Antennae with an apii 

 symmetrically turned under the abdomen; midd 

 empodium wanting /' ttLoew. 



Family Pipunculidse. — Small flies with the head alt 

 cupied by the ej very narrow. /'. . 



Family Conopidae. — Wasp-like, with a lorn: abd 

 separated; proboscis much prolonged; third joint of the antennae 



