CRYPTOCEPHALUS IN AMERICA NORTH OF MEXICO 95 



with the background. In nearly half the other specimens, however, 

 the elytra are rather to quite orange, and the striae partly to com- 

 pletely dark reddish and less strongly contrasting with the background. 

 At the extreme, the elytra match the orange color of the pronotum. 

 Distribution.— All the 46 specimens in the U.S. National Museum 

 are from Arizona. 



Cryptocephalus vapidus, new species 



Figures 111, 136 



General: Body 1.75 to 1.80 times as long as wide; dorsal surface 

 shining, lacking pubescence; most of ventral surface with short, sparse, 

 whitish pubescence. 



Head: Dull light orange, antennal insertions darker orange, front 

 evenly, moderately, densely punctate; vertex shallowly grooved or 

 depressed; clypeus sharply delimited, distinctly broadest apically. 

 Antennae nearly as long as body in male, or nearly two-thirds as long 

 as body in female; dull light orange. 



Pronotum: Dull light orange, with generally distinct, fine, darker 

 speckling which is absent basally at center, anteriorly on each side, 

 and at apex. Punctation dual, smaller punctures minute and sparse, 

 larger punctures small to very small, not coarse. 



Elytra: Dull light orange; each elytron with distinct to vague indi- 

 cations of two dull reddish, transverse, undulate bands; humerus dull 

 reddish; punctures dark reddish. Each elytron with nine even and 

 distinct rows of close, fairly large punctures; rows seven and eight 

 behind humerus nearly always interrupted and joining each other; 

 punctures distinct to apex, somewhat smaller apically; inner and 

 outer rows at apex distinct and clearly meeting. 



Ventral surface: Ventral surface and appendages dull light orange, 

 apices of femora light; metasternum reddish. Anterior margin of 

 metasternum in male broadly produced ventrally into a V-shaped 

 pointed lobe; anterior margin in female broadly produced ventrally 

 into a blunt lobe. Fifth abdominal segment in female at center with a 

 deep oval depression, or fifth segment feebly depressed in male. 



Length: 3.5 to 4.8 mm. 



Tyfe data. — The species is represented by 57 individuals, all taken 

 by D. J. and J. N. Knull in the Chmcuhua Mountains of Aiizona, 

 except for one from the Patagonia Mountains of Arizona. The male 

 holotype (taken on August 7, 1959) and the allotype (taken on July 

 27, 1953), are in the OSU collection. The dates on the paratypes and 

 their numbers are as follows: VI-15-39 (one male), VI-27-49 (one 

 male), VII-20-53 (one male, one female), VII-22-53 (one male), 

 VII-27-53 (two females), VIII-3-55 (Patagonia Mts., one female). 



