DIAPERENI NORTH OF MEXICO — TRIPLEHORN 367 



Diaperis maculata Olivier 



Plate 1 (Figs. 1, 2, 3) 



Diaperis maculata Olivier, 1791, p. 273; 1795, p. 5, tab. 1, fig. 2, a, b. — Latreille, 

 1804, p. 307.— Champion, 1S86, p. 174.— Blatchley, 1910, p. 1261, fig. 564.— 

 Blaisdell, 1929, p. 61. 



Diaperis hydaclina Fabricius, 1798, p. 178. 



Diaperis hijdni Fabricius, 1801, p. 585. — Laporte and Brulle, 1831, p. 335. — Horn, 

 1870, p. 379. 



Diaperis suturalis Chevrolat, 1877a, p. 170. 



Diaperis maculata var. floridana Blatchley, 1912, p. 332. — Blaisdell, 1929, p. 61. 



DESCRirTioN. — Broadly oval, strongly convex, reddish orange and 

 black, shining. Head with frons flat or slightly concave between 

 eyes; clypeiis large, well defined and swollen, with 2 blunt but dis- 

 tinct tubercles in male, simple in female; genae sharply reflected 

 above antennal insertions; antennae dark with basal 2 segments red- 

 dish; surface coarsely and densely punctured, color variable but usually 

 dark brown or black anteriorly and red posteriorly from eyes and ven- 

 trally, sometimes uniformly reddish. Pronotum shmmg black, trans- 

 verse, slightly more than twice as broad as long, apical margin bisin- 

 uate, more strongly so in males which in addition are bituberculate 

 medially; basal margin strongly bisinuate, produced in region of 

 scutellum; both basal and apical angles obtuse and broadly rounded; 

 lateral margins moderately arcuate, narrowly expanded, finely beaded; 

 surface finely and rather sparsely punctured. Scutellum black, finely 

 punctulate. Elytra with lateral margins broadly rounded to sub- 

 parallel; striae finely punctured, not impressed; intervals flat, mod- 

 erately, coarsely, and densely to minutely, punctured; ground color 

 reddish orange with black markings as follows: a sutural stripe not 

 attaining scutellum, becoming irregularly broader toward apex; a 

 large rounded spot on middle of basal third; usually a small elongate 

 posthumeral spot near margin, a large irregular spot on apical half 

 extending from lateral margin, separated from or fused with sutural 

 stripe. Ventral surface of pronotum slightlj^ concave, finely and ru- 

 gosely punctured; prosternum very short in front, prosternal proc- 

 ess strongly and evenly arcuate between coxae, its apex obtusely 

 deflected and concealed; mesosternum small, deeply notched anteri- 

 orly; metastemum and abdominal sternites finely and densely punc- 

 tured medially, punctures coarser laterally and on pleural sclcrites; 

 entire ventral surface and legs dark brown to black, shining. Male 

 aedeagus (pi. 1, figs. 2, 3) with basal sclerite regularly convex behind 

 apical sclerite, deeply and broadly channelled laterally for nearly 

 half its length. Measurements: length 4.7-7.2 mm.; width 2.8- 

 4.6 mm. 



