A REVISION OF NORTH AMERICAN CHRYSOBOTHRIN1 25 



71. Antennal segments 4-11 in part distinctly yellowish 72 



Antennal segments 4-11 not distinctly yellowish, but sometimes 



more or less pale piceous 74 



72. Prosternum with a distinct median lobe. (61) exesa LeConte, p. 143. 

 Presternum without a distinct median lobe 73 



73. Anterior tibia of male with a large emarginated dilation at apex; 



dorsal surface of body frequently greenish 



(60) verdigripennis Frost, p. 141. 

 Anterior tibia of male with a small, slightly emarginated dilation at 

 apex; dorsal surface of body never greenish 



(62) dentipes (Germar), p. 146. 



74. Pronotum longitudinally (sometimes vaguely) sulcate at middle 75 



Pronotum transversely rugose at middle, not longitudinally sulcate, 



but with an arcuate or two irregular depressions on each side of 

 middle (63) dolata Horn, p. 148. 



75. Outer segments of antenna nearly twice as wide as long in both 



sexes (64) ludificata Horn, p. 150. 



Outer segments of antenna not much wider than long in both sexes__ 76 



76. Prosternum with a median lobe > 77 



Prosternum without a median lobe 90 



77. Clypeus shallowly emarginate in front 78 



Clypeus deeply emarginate in front 83 



78. Pronotum deeply, longitudinally sulcate at middle 



(65) quadrilineata LeConte, p. 153. 

 Pronotum indistinctly, at most only slightly, longitudinally sulcate 



at middle 79 



79. Pronotum with distinct, irregular, smooth, elevated callosities; large 



species, 17 mm (66) grandis Chamberlin, p. 155. 



Pronotum without distinct, smooth, elevated callosities; small 



species, 6-14 mm 80 



80. Elytra subopaque, uniformly punctate, without distinct foveae or 



elevated smooth spaces (67) nixa Horn, p. 156. 



Elytra rather strongly shining, irregularly punctate, with distinct, 



elevated, smooth spaces, or indistinct discal foveae 81 



81. Abdominal sternites with smooth lateral callosities; prosternum 



usually smooth at middle — (31) texana LeConte, p. 90. 



Abdominal sternites without smooth lateral callosities; prosternum 



densely punctured at middle 82 



82. 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 emar- 

 ginate at apex (38) pusilla Castelnau and Gory, p. 103. 



83. Pronotum with distinct, irregular, elevated, smooth callosities 84 



Pronotum without distinct, irregular, elevated, smooth callosities 87 



84. Anterior femur with a long, acute tooth; eighth abdominal tergite of 



female longitudinally carinate__ (61) exesa LeConte, p. 143. 

 Anterior femur with a short, obtuse tooth; eighth abdominal tergite 



of female not longitudinally carinate 85 



85. Dilation on anterior tibia of male narrowed before apex (fig. 66, A), 



and genitalia slender, with sides slightly expanded at middle 

 (fig. 120, F); last visible abdominal sternite of female not arcu- 

 ately emarginate at apex, if so, transversely truncate at middle 



of emargination 86 



Dilation on anterior tibia of male not narrowed before the apex (fig. 



65, A) , and the genitalia broad, with the sides strongly expanded 

 at middle (fig. 120, E) ; last visible abdominal sternite of female 

 broadly, arcuately emarginate at apex. (68) monticola Fall, p. 158. 



86. Dilation on anterior tibia of male abruptly narrowed at apex (fig. 



66, A) ; last visible abdominal sternite of female with the emar- 

 gination at apex limited at bottom by a thin, slightly projecting 

 and deflexed plate (fig. 66, D) (69) caurina Horn, p. 161. 



Dilation on anterior tibia of male not abruptly narrowed at apex 

 (fig. 67, A); last visible abdominal sternite of female deeply, 

 narrowly notched at apex(fig. 67, D) _ (70) blanchardi Horn, p. 163. 



