Insecutor Inscitiae Menstruus 



Vol, V. OCTOBER-DECEMBER, 1917 Nos. 10-12 



NEW GENERA OF AMOBIIN^ 



(Dipt era) 



By CHARLES H. T. TOWNSEND 



The Sarcophagidse proper include the two subfamilies 

 Sarcophaginse and Amobiinse, each separable into two tribes, 

 respectively : Sarcophagini, Brachicomini ; and Amobiini, 

 Tephromyiini. To these may probably best be added the Milto- 

 gramma and Metopia types as subfamilies, since these forms 

 are more closely related to the Sarcophaga type than to any 

 other. Constituted thus, the family Sarcophagidse may be . 

 quite easily distinguished from the four muscoid families with 

 which it is most nearly allied. 



The Muscidse differ on general metallic coloration, combined 

 with weaker abdominal macrochsetse, usually no wrinkle at 

 bend of fourth vein, absence of incubating uterus, and slight 

 development of dorsopharyngeal sclerite I (first-stage maggot). 



The Stomoxydidas differ on same characters as preceding 

 with exception of the first. The uterovagina functions in 

 Viviparomnsca to incubate one egg at a time. 



The Calirrhoidse differ on generally narrowed or strongly 

 carinate facial plate, stronger macrochsetse, elongate legs, 

 tubular to gutlike incubating uterus, and much reduced cephalo- 

 pharyngeal skeleton I. 



The Dexiidse differ on the cut-off and scarcely prominent 

 epistoma, stronger macrochaetae, long legs, tubular to ribbonlike 

 uterus, and reduced cephalopharyngeal skeleton I. 



Aside from the Miltogramma and Metopia types, which 

 differ on usually narrower facial plate, V-like uterus, weakly 

 developed or vestigial dorsopharyngeal sclerite, and a variety 



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