CRYPTOCEPHALUS IN AMERICA NORTH OF MEXICO 53 



Type data.— The single male individual from which this species 

 is described (USNM type number 69246) bears only the datum 

 Colorado. 



Discussion. — This species is most similar to bivius and is readily 

 distinguished from it. In bimus, the rows of punctures are continuous 

 and not interrupted by the light areas; in disruptus, the rows are 

 obsolete or absent in the light areas. Also bioius ranges in length from 

 4.3 to 6.4 mm.; the one individual of disruptus is 4.25 mm. long. The 

 specific name disruptus refers to the disconnected rows of punctures 

 of the elytra. 



Cryptocephalus dorsatus, new species 



Figures 2, 99, 126 



General: Body 1.7 times as long as wide; dorsal surface shining, 

 without pubesoense, most of ventral surface with short, sparse, 

 whitish pubescence. 



Head: Dull orange, front with moderate-sized punctures; clypeus 

 not sharply delimited, short, distinctly broadest apically, with fine, 

 sparse punctures. Antennae of male about two-thirds length of body, 

 in female about one-half length of body, first five segments dull orange, 

 apical six segments dark brown. 



Pronotum: Predominantly dull orange, with vague lighter or 

 apparently transparent areas at base, apex, and sides. Punctation 

 dual, smaller punctures minute and rather dense, larger punctures 

 small, not dense. 



Elytra: Dull creamy yellow to light orange; humerus dark brown to 

 black; punctures dark. Each elytron with seven rows of moderate- 

 sized, fairly even punctures and one or tw^o punctures behind humerus, 

 punctures rather close, smaller to apex; inner and outer rows distinct 

 at apex, nearly meeting or meeting. Intervals not or only slightly 

 convex. 



Ventral surface : Ventral surfaces and legs dvdl orange, metasternum 

 (especially at side) darker than remainder. Male with anterior margin 

 of prosternum broadly produced ventrally into a V-shaped lobe, 

 appearing spinelike in lateral view; female mth anterior margin of 

 prosternum produced ventrally, not as broad or pointed as that of 

 male. Fifth abdominal segment at center with a broad, deep, oval pit 

 in female, or faintly depressed in male. Pygidium dull orange, with 

 rather dense, moderate-sized punctures. 



Length: 4.4 to 5.0 mm. 



Type data. — Described from one male and one female taken at 

 Alpine, Texas, on August 1, 1949. The female bears the following data: 

 "sweeping Erigeron sp. and Gutierrezia microcepliala, Alpine, Tx. 



