34 U.S. NATIONAL MUSEUM BULLETIN 290 



rows of punctures and a short series behind humerus, fifth and sixth 

 rows interrupted at middle and joining behind middle, row some- 

 times confused beyond junction; punctures as usual to larger than 

 usual, finer apically as usual; inner and outer rows distinct at apex and 

 clearly meeting. 



Prosternum: Evenly arcuate and somewhat produced in both sexes. 



Length: 3.6 to 4.6 mm. 



Discussion. — A single specimen was taken on cotton. Wilcox 

 (1954, p. 385) records it as beaten from walnut. 



Distribution. — The 69 specimens examined were collected in 

 Pennsylvania, Maryland, Delaware, Virginia, West Virginia, Ken- 

 tucky, Tennessee, Florida, Mississippi, Kansas, and Oklahoma. 



Cryptocephalus basalis Suffi-ian 



Figure 21 

 Cryptocephalus basalis Sufifrian, 1852b, p. 54. 



Pronotum: With fine, silvery pubescence; black throughout; 

 punctation dual, larger punctures moderate, dense. 



Elytra: With fine, silvery pubescence. Each elytron black and with 

 foUowdng orange to red: basal half (except humerus and suture behind 

 scutellum); apex, basal markings not attaining apical spot, posterior 

 margin of basal spot convex. With nine rows of punctures, sixth and 

 seventh rows sometimes confused, punctures as large and dense as 

 usual though often less distinct than usual; inner and outer rows at 

 apex distinct and usually meeting. 



Posternum: Anterior margin in male with a large, sharp, downward 

 and posteriorly directed spine; anterior margin in female with a small, 

 downwardly directed process. 



Length: 4.7 to 5.8 mm. 



Discussion. — This species and mucoreus have been confused in the 

 literature, but, as pointed out by Wilcox (1953, p. 51), the two are 

 distinct. 



Douglass (1929, p. 8) recorded the species from sumac (Rhus 

 glabra L.) and sorghum in Kansas; these records may be in error. 



Distribution. — Only five specimens of this species have been seen, 

 and all are from the Davis Mountains of Texas. Wilcox (1953, p. 51) 

 recorded it from Arizona. 



Cryptocephalus binominis binominis Newman 



Figure 26 



Cryptocephalus binominis Newman, 1841, p. 78. 



Pronotum: Black (usually) to dark reddish throughout; punctation 

 dual, larger punctures minute to small. 



