ASIUD.E. 203 



Very large, robust, thickly hairy species; first posterior cell nar- 

 row throughout; hind femora of nearly equal thickness through- 

 out {Hyperechia) 24 Dasylechia. 



10. Densely pilose , large species, the abdomen short and broad, usu- 



ally broader beyond the middle (25) . . . . Dasyllis. 



More elongate, less hairy or nearly bare species, the abdomen not 



distinctly broader beyond the middle. . . . .11 



11. Body nearly bare; hind femora usually with spinous tubercles be- 



low; species of rather moderate size (45) . . . Lampria. 

 Body more or less hairy, from rather small to large size; first pos- 

 terior cell often narrowed or closed (Nusa) ; hind femora not 

 with spinous tubercles below (26, 46). . . Laphria. 



asilin^;. 



Marginal cell cloned; antenna, always with a long terminal arista. (32.) 



1. Bristle of antennae pectinate below (27). . . Ommatius. 

 Bristle of antennae bare. ........ 2 



2. The veins closing the discal and fourth posterior cell in the same 



straight line or parallel. • Atractia. 



The veins closing the discal and fourth posterior cells not parallel. 3 



3. The posterior branch of the third vein curves forward to meet the 



costa at or before the tip of the wing; or the anterior branch of 



the third vein angulated near its origin, with stump, or both. 4 



The posterior branch of third vein terminates beyond the tip of the 



wing; the anterior branch without stump. .... 6 



4. Ovipositor cylindrical, with a terminal circlet of spines. . 5 

 Ovipositor laterally compressed, without terminal circlet of spines 



(fig. 74) Erax. 



5. Abdomen shorter than the wings (28) . . . . Eccritosia. 

 Abdomen longer than the wings (28) . . . Proctacanthus. 



6. Two submarginal cells. ....... Asilus.* 



Three submarginal cells. ........ 7 



7. Abdomen shorter than the wings; body thickly pilose; claws obtuse 



(29) Mallophora. 



Abdomen longer than the wings; body thinly pilose; claws more 

 pointed ( 30, 31, 32). Promachus. 



* In general the subdivisions of the old genus Asilusaxe very vague 



