100 MISC. PUBLICATION 174, U.S. DEPT. OF AGRICULTURE 



front, and weakly concave behind ; temples receding from the eye margins, 

 narrow and poorly defined ; ocelli in a low triangle ; postocellar line longer 

 than ocellocular, the latter equal to about twice the greatest diameter of an 

 ocellus; head viewed from in front broader than high (29:24), narrowing 

 slightly toward the mouth ; malar space nearly equal to the eye height ; antennal 

 scrobe very shallow ; eyes short, oval, bare ; clypeal area and lower part of 

 face with fine converging striae, anterior margin of clypeus straight ; vertex 



Figure 22. 



-Merisus morel ellistenae Crawford: A, Adult female; B, antenna of female 

 C, antenna of male. A, X 26. 



very weakly sculptured, nearly smooth ; rest of head distinctly, strongly reticu- 

 late-punctate, the whole head sparsely clothed with conspicuous white hairs ; 

 left mandible distinctly tridentate, right mandible distinctly quadridentate ; 

 maxillary palpi 4-jointed. Antennae inserted on a line with the lower extremi- 

 ties of the eyes, 11-jointed, not especially slender, weakly clavate ; scape cylin- 

 drical, reaching to the front ocellus; pedicel one and one half times as long as 

 broad at apex ; first ring joint minute, second about twice as broad as long 

 and narrower than the first funicle joint ; funicle 6-jointed, the first joint a 

 little longer than broad, about equal to pedicel plus ring joints; second to 

 fifth funicle joints also usually a little longer than broad, the sixth subquadrate 



