A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 23 



44. Clypeus deeply, semicircularly or angularly emarginate in front. 



Western part of the United States- _ (23) debilis LeConte, p. 72. 

 Clypeus broadly, arcuately, but not deeply emarginate in front. 



Eastern part of the United States 45 



45. Male with the head, and antenna in part, bright green; last visible 



abdominal sternite of female rather deeply arcuately emarginate 



at apex (37) neopusilla, new species, p. 102. 



Male with the head bronzy brown and the antenna piceous; last 

 visible abdominal sternite of female rounded or shallowly 

 emarginate at apex_ (38) pusilla Castelnau and Gory, p. 103. 



46. Pronotum with the sides and anterior part more or less reddish 



cupreous, the surface densely, coarsely punctate 47 



Pronotum with only the sides reddish cupreous, the surface sparsely, 

 finely punctate (39) lateralis Waterhouse, p. 106. 



47. Elytra with smooth, longitudinal costae apically; punctures on 



median part of pronotum more or less contiguous 



(40) carmelita Fall, p. 108. 

 Elytra without smooth, longitudinal costae apically, sometimes with 

 a vague sutural costa on each elytron, but the costa punctured 

 like rest of surface; punctures on median part of pronotum sub- 

 equal in width to the intervals (41) piuta Wickham, p. 110. 



48. Elytra with large reddish-cupreous humeral spots 49 



Elytra without reddish-cupreous humeral spots 50 



49. Pronotum unicolored, black to bronzy brown. (42) axillaris Horn, p. 112. 

 Pronotum bicolored, bronzy brown, with a reddish-cupreous, anterior 



median spot (43) acaciae Knull, p. 114. 



50. Surface above green (sometimes more or less bronzy green) to vio- 



laceous blue 51 



Surface above bronzy brown, with a more or less cupreous tinge 54 



51. Elytra with more or less distinct purplish-black vittae or spots 52 



Elytra uniformly light green to violaceous blue, without purplish- 

 black vittae or spots 53 



52. Clypeus semicircularly emarginate in front 



(44) purpureoplagiata Schaeffer, p. 115. 

 Clypeus broadJy, but not semicircularly, emarginate in front 



(45) purpureovittata Horn, p. 117. 



53. Anterior tibia of male with an acute tooth near apex, and the geni- 



talia broadly rounded at the sides; last visible abdominal sternite 

 of female slightly, broadly emarginate at apex. Western part 



of the United States (36) viridicyanea Horn, p. 100. 



Anterior tibia of male with a broadly rounded dilation near apex, 

 and the genitalia constricted at the sides; last visible abdominal 

 sternite of female narrowly notched at apex. Eastern part of 

 the United States (46) harrisi (Hentz), p. 119. 



54. Base of each elytron strongly angulated; anterior femur with a long, 



acute tooth; middle tibia of male unarmed near apex 55 



Base of each elytron not strongly angulated; anterior femur with a 

 short, obtuse tooth; middle tibia of male with a large, rounded 

 tooth near apex (47) chiricahuae Knull, p. 122. 



55. Pronotum moderately convex; anterior tibia of male with a small, 



rounded dilation at apex (48) micromorpha Fall, p. 123. 



Pronotum strongly flattened; anterior tibia of male with a triangular 

 tooth at apical third ►_ (49) kelloggi Knull, p. 125. 



56. Elytra with discal foveae (50) parapiuta Knull, p. 126. 



Elytra without discal foveae „ 57 



57. Body above uniformly bright bronzy green. _ (20) humilis Horn, p. 67. 

 Body above bluish to violaceous black, and each elytron with a large 



reddish-cupreous humeral spot 



(21) cupreohumeralis Van Dyke, p. 68. 



58. Clypeus transversely truncate, or at most only sinuate in front 



(51) floricola Gory, p. 128. 

 Clypeus emarginate, or with a median incision in front 59 



59. Anterior tibia of male armed with a number of small teeth on inner 



margin ; eighth abdominal tergite of female longitudinally carinate_ 60 

 Anterior tibia of male armed with a single tooth or dilation on inner 

 margin; eighth abdominal tergite of female not longitudinally 

 carinate (except in exesa) 63 



