BEETLE GENUS ONTHOPHAGUS — HOWDEN, CARTWRIGHT H 



10(9). Pronotum largely smooth between punctures; frontal carina of male 

 extending almost to eye; female frontal carina gradually elevated 

 from middle to rounded ends which drop sharply to head surface, 

 the ends nearer to eye than to middle; Kansas to Arizona. 



brevifrons Horn (p. 27) 

 Pronotum finely alutaceous; male frontal carina extending not more than 

 one-half distance from middle to eye; female frontal carina with 

 each side elevated to a sharp tubercle, the tip of each nearer to the 

 middle than to the eye ; Texas . . . subtropicus, new species (p. 30) 

 11(4). Disc of pronotum virtually impunctate, shiny black or brownish black; 

 males without horns or protuberances on head or pronotum, 5 to 7 



mm. in length; found in burrows of gopher tortoise 12 



Disc of pronotum distinctly punctate 13 



12(11). Elytral intervals with one or two rows of setigerous punctures, punc- 

 tures often with a tubercle at anterior margin; east coast of Florida, 



South Carolina polyphemi polyphemi Hubbard (p. 35) 



Elytral intervals 2 and 4 with only a few scattered setae, nearly im- 

 punctate; Florida west of Apalachicola River to Mississippi. 



polyphemi sparsisetosus, new subspecies (p. 38) 



13(11). Shining, black, brown, blue, green, or cupreous; more than 4 mm. in 



length; pronotum lacking numerous smaller secondary punctures . . 14 



Dull or feebly shining, alutaceous, brown or black, or if shining only 



3 to 4 mm. in length; some species with small secondary punctures 



on pronotum 19 



14(13). Pronotum without basal margin; clypeal emargination, if any, not 



dentate on each side 15 



Pronotum narrowly margined basally; clypeus usually more or less 

 bidentate, the teeth low, triangular, and well separated; male with 

 conical pronotal protuberance, without tubercles or horns behind 

 eyes; less than 5.5 mm. in length; shining blackish green or coppery; 

 Atlantic coast to Kansas, Oklahoma, and Texas. 



subaeneus (Palisot de Beauvois) (p. 72) 



15(14). Second and third elytral intervals with three rows of setigerous tubercles; 



male -with long slender horn above each eye ; pronotal protuberance of 



male rounded not projecting above head 16 



Second and third elytral intervals with one or two rows of setigerous 

 punctures or tubercles; male pronotum with bifurcate protuberance 



projecting above head 17 



1G(15). Elytral intervals alutaceous between tubercles; Vermont to Florida, 

 west to Nebraska and Texas. 



striatulus striatulus (Palisot de Beauvois) (p. 41) 

 Elytral intervals smooth and shining between tubercles; Florida to 



South Carolina striatulus floridanus Blatchley (p. 45) 



17(15). Elytral intervals with small tubercles anterior to each indistinct punc- 

 ture; pronotal punctures usually large and close, often anteriorly 

 tuberculate; body commonly green above, the head and pronotum 



rarely with slight coppery cast, elytra often blackish 18 



Elytral intervals, particularly the fifth, distinctly punctate, the anterior 

 tubercles lacking or barely indicated; pronotal punctures more widely 

 spaced, usually shallow, lacking anterior tubercles; body above 

 shining green to distinctly coppery red; Ontario, northeastern United 

 States, and Appalachian Mountains to South Carolina. 



orpheus canadensis (Fabricius) (p. 50) 



