CRYPTOCEPHALUS IN AMERICA NORTH OF MEXICO 17 



Larger, 5.0 to 6.3 mm. ; undersurface with denser, moderately long, white 



pubescence; Arizona pubiventris SchaefiFer 



25(22). Elytral disk largely to wholly black or dark brownish (some metallic 



blue or green) , usually lateral margin partly or entirely yellowish . 26 



Elytra generally red or pale and with or without markings; when mostly 



black or brown with scattered pale spots or vittae 31 



26(25). Elytra at side yellow from base to apex; midwest to central states . 27 



Elytra at side black, or yellow only at base; various localities .... 28 



27(26). Elytral disk entirely black (fig. 84) . . . venustus cinctipennis Randall 



Elytral disk black with more or less distinct yellowish markings (fig. 8.j). 



venustus hamatus Mclsheimer 

 28(26). Elytra dark and distinctly metallic bluish or greenish; Arizona, Texas 



(fig. 43) arizonensis arizonensis Schaefifer 



Elytra black and shmiug, not bluish or greenish; various localities . 29 



29(28). Legs and ventral surface mostly to completely orange; length 2.8 to 



3.5 mm.; southeastern U.S. to Arkansas (fig. 44) . . . . nanus F. 



Legs and ventral surface black; length 3.0 to 4.9 mm.; Rocky Mt. 



states 30 



30(29). Head black; pronotum red; elytra black (fig. 41). 



sanguinicollis sanguinicollis Suffrian 



Head black with yellow markings; pronotum red with apex yellowish, 



base dark; elytra black with yellow margin. , pallidlcinctus Fall 



31(25). Pronotum with a broad, median, longitudinal dark spot bordered each 



sideby generally distinct yellow stripes (figs. 10, 11) 32 



Pronotum not as above 33 



32(31) . Smaller, about 3.3 to 4.3 mm. ; pronotal punctation variable, often dense 

 and coarse (fig. 10); serial punctm-es of elytra usually larger and 



coarse (fig. 50) ; eastern U.S trivittatus Olivier 



Larger, 4.0 to 5.1 mm.; pronotal punctation small and fine (fig. 11); 

 serial punctures of elytra usually smaller, feebly impressed (fig. 51); 



Florida, Georgia cuneatus Fall 



33(31). Pronotal medial line light, bordered by longitudinal dark stripes (figs. 



12 to 15) 34 



Pronotal coloring never as above 49 



34(33). Elytral punctures pigmented, not or obscurely arranged in rows (figs. 



54, 97) 35 



Elytral punctures usually not pigmented, arranged in more or less 



regular rows 36 



35(34). Elytral punctures larger (fig. 54); four pronotal dark stripes complete, 



lateral two arcuate to nearly straight (fig. 14) ; Texas . duryi SchacfFer 



Elytral punctures smaller (fig. 97) ; four pronotal dark stripes reduced 



(fig. 13) to absent; California, Arizona . . . binotatus, new species 



36(34). Pronotum with coarse, pigmented punctures, densest anteriorly and at 



side (fig. 9) ; Texas, Arizona merus Fall 



Pronotum with fine punctures or with coarse, not pigmented 



punctures 37 



37(36). Elytral punctures confined largely to transverse dark markings, small 

 and sparse on yellow regions; dark markings of each elytron consisting 

 of a basal, transverse, undulate band, a subhumeral spot, two sub- 

 median spots, and two apical spots (fig. 100) ; Colorado. 



disruptus, new species 

 Neither punctures nor markings as above; various localities .... 38 



