REVISION OF GENUS EUCERCERIS CRESSON 



21 



Thorax black except for a solid band on the prothorax, the pos- 

 terior lobe of the pronotum, two spots laterally on the scutum, a 

 band on the scutellum, the metanotum, two oval spots on the en- 

 closure, large patches on the propodeum, a large area on the pleuron, 

 most of the sternum, the tegulae, all of which are creamy white; 

 tegulae low and smooth, enclosure smooth except for a medial groove 

 and light rugae in the lateral angles; mesosternal tubercles absent; 

 legs largely creamy white except for elongate black areas on the 

 dorsal surfaces of all segments except the tarsi; aU tarsi become 

 more or less ferruginous apically; wings subhyaline but lightly clouded 

 along the anterior area, second submarginal cell notpetiolate (fig. 65e). 



Figure 7. Western U.S. E. barri, new 

 species 



Abdomen black except for broad bands on terga 1, 2, 3, 4, 5, and 

 6, those on 3, 4, and 5 confined medially to the apical part of the 

 tergum, bands on sterna 2, 3, and 4, and evanescent lateral spots 

 on sternum 5, all of which are creamy white; prominent rows of 

 bristles on the apical margins of sterna 3 and 4, an almost indis- 

 tinguishable pair of bristle clusters on sternum 5; pygidium average 

 in form. 



In some females the band on the metanotum is broken into two 

 lateral patches. Some specimens of each sex have the markings 

 somewhat yellow. In some females the 2nd submarginal cell is fully 

 petiolate. On the males the light markings above the antennae may 

 or may not be fused. This species is very close to E. similis Cresson 



