16 BULLETIN 145, UNITED STATES NATIONAL MUSEUM 



111. Pronotum finely, transversely rugose on disk, and the sides parallel or 



obliquely narrowed from apical angles to behind middle; epistoma 



deeply, arcuately emarginate in front (97) acaciae Fisher. 



Pronotum coarsely, transversely rugose on disk, and the sides arcuately 

 rounded to behind the middle; epistoma feebly, arcuately emarginate in 

 front (98) abductus Horn. 



112. Pubescent spots on elytra distinct, and the median one rounded ; pronotum 



with distinct median depressions; female with the front of head 

 mahogany red ; male genitalia with the sides nearly parallel to each 



other (99) pseudofallax Frost. 



Pubescent spots on elytra usually not distinct, and the median one elon- 

 gate ; pronotum with feeble median depressions ; female with front of 

 head bronzy green ; male genitalia with the sides strongly expanded neat 

 apex (100) egeniformis Champlain and Knull. 



113. Tips of elytra emarginate (101) dolli Schaeffer. 



Tips of elytra not emarginate 114. 



114. Prosternal lobe broadly rounded in front 115. 



Prosternal lobe deeply, arcuately emarginate in front 116. 



115. Sides of prosternal process parallel to behind the coxal cavities. 



(93) quercus Schaeffer. 

 Sides of prosternal process expanded behind the coxal cavities. 



(98) abductus Horn. 



116. Male with claws on anterior feet dissimilar, one claw cleft near tip and 



the teeth nearly equal in length, the opposite claw cleft near middle, with 

 the inner tooth broader and distinctly shorter than outer one. 



(102) lecontei Saunders. 

 Male with claws on anterior feet similar, both claws cleft near tip. and 

 the two teeth about equal in length. 



(102a) lecontei subspecies celticola Fisher. 



117. Pronotum slightly gibbose ; each elytron with a longitudinal pubescent vitta 



along the sutural margin (77) gibbicollis Fall. 



Pronotum not gibbose 118. 



118. Sides of prosternal process expanded behind the coxal cavities; each 



elytron with three obsolete pubescent spots 119. 



Sides of prosternal process parallel to behind the coxal cavities 120. 



119. Pronotum strongly convex, with only an obsolete depression on disk; color 



above brownish black; large species (6-7 millimeters). 



(103) abjectus Horn. 

 Pronotum moderately convex, with a distinct, elongate, median depression ; 

 color above brownish or reddish cupreous; small species (4.75 milli- 

 meters) (91) cupreonitens Fisher. 



120. Pronotum strongly convex, without a median depression ; each elytron with 



a longitudinal pubescent vitta and basal spot (104) blandus Horn. 



Pronotum moderately convex, with distinct median depressions ; elytra 

 with distinct pubescent designs (105) subcinctus Gory. 



121. Elytra with a longitudinal carina between the humeri and lateral mar- 



gins " 122. 



Elytra without a longitudinal carina between the humeri and lateral mar- 

 gins; color plumbeus (106) muticus LeConte. 



122. Pronotum with prehumeral carinae 123. 



Pronotum without prehumeral carinae 133. 



123. Hind coxae with the posterior margin distinctly sinuate or arcuately 



emarginate. and with the outer posterior angle more or loss acute and 

 somewhat prolonged 124. 



