NOKTH AmERUAX Dll'TKRA So 



:^>. Four, soinotinies live, subinar^inal cells. Hypkrai.onia 



Three submarginal cells 4 



4. Third joint of the anteiiiiiv elonfjate-coiiieal T) 



Third joint of the antennie slyprt, onion-shaped, with a very \nng 

 style, not bisected l)_v a sutVre. fi 



•j The conical third joint bears a more or less lonf- style, separated 



by a distinct suture Exoprosopa 



The conical third joint does not Iwr an elongate style at the end; 

 second vein strongly contortefK in the shape of a recuni- 

 bents. 'DiPALTA^^ ^--A>»v 



a. Proboscis long, projecting far beyond the oral margin. (^ Stonyx / - ■• - '^ '^*^ 

 Proboscis withdrawn within the oral cavity ; rudimentary pul- 



villi ^SOPENT^ES 



7. The Style of the third antennal joint distinctly bisected by a 



suture, and bearing a pencil of hairs at tin- tip. 



Ai!i;yi!amu;ba 



The antennal style not bisected, and with a microscopic bristle, 



but no pencil of hairs, at the tip 8 



8. Eyes of the male contiguous on the vertex; anal cell closed. 



O ASTROPHANES 



Eyes of the male not contiguous on vertex ; anal cell open. 9 



9. The contact of the discal cell with the third posterior not much 



longer than its contact with the fourth posterior cell ; probos- 

 cis long, projecting far beyond the oral margin; sides of the 

 abdomen with a fringe of scales, and not of hairs only. 



Lepidantiikax 



The contact of the discal cell with the third posterior at least 



twice as long as its contact with the fourth posterior cell, 



the latter contact often merely punctiform. Anthrax 



10. Body Anthrax-like; frontal triangle in the male large; frontal 



space in the female of a corre8i)onding size. . 11 



Body not A n t h r a x-like ; frontal triangle in the male small. IH 



11. Antennae apjjroximate at the base; tliird antennal joint gradu- 



ally attenuate OrODOCERA 



Anteniiie remote at hasc. . 12 



12. I'ld villi distinct Aimkkbantcs 



I'ulvilli none Kpacmus 



