A REVISION OF NORTH AMERICAN CHRYSOBOTHRINT 



45 



Chamberlin (1926) records this species from San Diego and Owens 

 Lake, Calif., and Obenberger (1934) lists it from Lower California. 



Hosts.- — The adults have been reared from the roots of Atriplex 

 sp. collected at Palm Springs, Calif., by J. D. Maple. 



Very little variation was found in the few examples available for 

 study. The sides of the pronotum are usually more arcuately rounded 

 than in the lectotype, and the smooth callosities on the pronotum are 

 absent on some of the specimens. The discal f oveae on the elytra are 

 vaguely indicated in the type but are not present on the specimens 

 from Kernville. The length is from 7 to 10 mm. 



Horn (1886) states that he has seen only three males, but there 

 are none in the LeConte collection and only the lectotype in the 

 Horn collection. The second specimen in the Horn collection under 

 deserta is not this species. 



(9) Chbysobotheis atbiplexae, new species 

 (Fig. 9; fig. 112, B) 



Figuee 9.— Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C) and of female (Z>) of Chrysobothris atriplexae. 



Male. — Broadly elongate, moderately convex above, rather strongly shining, 

 bronzy green, with a distinct cupreous tinge; beneath cupreous, with faint 

 greenish reflection. 



Head bright bronzy green, with a narrow, longitudinal carina on occiput ; sur- 

 face densely, coarsely punctate, slightly rugose anteriorly, densely clothed with 

 long, recumbent, white hairs ; clypeus broadly, deeply, subangularly emarginate 

 in front, broadly rounded on each side. Antenna bronzy green, with a faint 

 cupreous tinge, nearly equal in width to apex ; intermediate segments compact,, 

 as wide as long, broadly rounded at outer margins; third segment slightly 

 longer than fourth. 



Pronotum three-fourths wider than long, subequal in width at base and apex r 

 widest near middle; sides slightly, arcuately rounded, more strongly converg- 

 ing posteriorly ; anterior margin sinuate, with a broad, slightly rounded, median 

 lobe ; base broadly, arcuately emarginate on each side, the median lobe broadly 

 rounded and rather strongly produced ; disk moderately convex, slightly un- 



