BEETLE GENUS ONTHOPHAGUS — ^HOWDEN, CARTWRIGHT 57 



Onthophagiis cynornysi Brown 



Plate 5, Figures 42 and 43 



Onthophagus cynornysi Brown, 1927, p. 131. — Boucomont, 1932, p. 311. — -Leng 

 and Mutchler, 1933, p. 38.— Howden, Cartwright, and Halffter, 1956, p. 11. 



Male majors. — Length 6 to 10 mm., width 3.5 to 4.5 mm. Shming, 

 piceous; head and thorax sometimes vaguely aeneous, legs brownish 

 black, antenna brownish red, the club grayish brown. Head with 

 clypeus strongly reflexed anteriorly, vaguely emarginate, discal sur- 

 face rugosel}" punctate, with fine secondary punctures scattered among 

 the coarse ones; vertex and prominent gena with a few scattered, 

 coarse, setigerous punctures and a number of fine secondary punctures. 

 Cl^^peal carina barely indicated, carina on vertex represented only 

 laterally by a single short tubercle above and behind each eye. 



Pronotum margined anteriorly and laterally; convex with anterior 

 process extending over the head almost as far as the anterior edge of 

 the ch'peus, this process bifurcating over the vertex, the lateral exten- 

 sions ending in outwardly flared, hatchet-shaped tips; the process nar- 

 rowest near its base just behind the pronotal margin, but not flaring 

 noticeably outward until the area of bifurcation, at which point the 

 extensions curve outward and downward; viewed laterally the proc- 

 ess curves evenly downward, almost touching the clypeus. Pronotal 

 surface punctate-tuberculate; the pronotum with a tuberculate rather 

 than a punctate appearance because each coarse thoracic puncture 

 bears a pronounced tubercle at its anterior margin; the tubercle- 

 punctures most numerous laterally and on the pronotal process, 

 becoming more sparse and less pronounced medially and posteriorly; 

 a few small secondar}" punctures, which lack tubercles, scattered over 

 the discal area of the pronotum between the coarse punctures. Pro- 

 notum with a smooth, impunctate line more or less traceable forward 

 in some specimens; midline widely, increasingly depressed posteriorly 

 over basal fourth in all specimens. Elytra with well-defined striae; 

 intervals, except for the sutural interval, irregularly, biserially tuber- 

 culate, with a minute seta-bearing puncture at the base of each 

 tubercle; surface smooth and shining, not alutaceous. 



Pygidium coarsely, setigerously punctate with scattered fine secon- 

 dary punctures intermingled with the coarse punctures on the lower 

 half. Ventral portions of thorax laterally alutaceous and coarsely 

 setigerously punctate, metasternum medially having only fine secon- 

 dary punctures and a faint longitudinal sulcus. Abdominal segments 

 coarsely punctate laterally, finely so medially, the last segment emar- 

 ginate medially. Foreleg with femur and tibia longer than in female, 

 the distal end of the femur extending to the lateral margin of the thor- 

 ax; tibia with four large lateral teeth with serrate margin between 



