A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 237 



Male. — Differing from the female in having the antenna bipeetinate from the 

 fourth segment, with the inner ramus of each segment slightly longer than the 

 outer one, and the last segment bifurcate, the last visible sternite broadly, 

 shallowly, arcuately emarginate at apex, the eighth tergite more densely punc- 

 tured, and the middle tibia slightly arcuate. 



Type locality. — New Mexico. Lectotype simply labelled with a 

 dark-green disk. Chamberlin (1926) gives the type locality as Ari- 

 zona, near Yuma, but this is incorrect, as LeConte states that the type 

 is from New Mexico. 



DISTRIBUTION 



From material examined : 



Caufornia: Experimental Farm, Imperial County, June 1912 (J. G. Bridwell). 

 Amedee, July 21-28, 4,200 feet elevation (H. F. Wickham). Coachella Val- 

 ley (F. S. Stickney). Holtville, June 28, 1936 (M. Cazier). 



Colorado : La Junta, Bent County, 4,000 feet elevation, June 24-25, 1885 (F. a 

 Bowditch ) . 



Nevada: Hawthorne, June (H. F. Wickham). 



New Mexico: No definite locality, type series (Capt. J. Pope) (F. H. Snow). 



Wickham (1898) records this species from Yuma, Ariz. 



Host. — Nothing is known of the larval habits, but Mr. Stickney 

 collected the adults at the roots of Atriplex sp. in the Coachella Val- 

 ley, Calif. Wickham (1898) reports collecting a specimen on an 

 unidentified thorny bush at Yuma, Ariz. 



The color on the dorsal surface of the body varies from dark green 

 to bronzy green, and the purplish-black spots on the elytra are usually 

 separated, sometimes joined to one another along the sutural margin, 

 and in a specimen from Nevada the purplish spot extends over the 

 greater part of the apical region. The underside of the body is 

 bronzy green in the specimens from the type locality, but is brownish 

 cupreous in most of the specimens examined from California. The 

 sculpture on the pronotum and elytra is variable, and is more or less 

 transversely rugose on many of the specimens. The length is from 

 7 to 14 mm. 



LeConte (1859) recorded a male and female as having been col- 

 lected in May and June by Capt. J. Pope while exploring the Llano 

 Estacado, N. Mex., which he misidentified as the species described by 

 Castlenau and Gory from Mexico as nigrofasciata. LeConte (1873), 

 after examining the type of nigrofasciata in the collection of Count 

 Mniszech, found that it was not that species, so he renamed it 

 atrif asciata. 



(109) Chrysobothris sociaiis Waterhouse 



(Fig. 103; fig. 120, C) 



Chrysobothris sociaiis Waterhouse, 1887, Biol. Cent.-Amer., Coleopt., v. 3, pt. l r 

 p. 39, pi. 3, figs. 10, 10a ; Kerremans, 1892, Soc. Ent. de Belg. Mem. 1 : 220 ; 

 Horn, 1894, Calif. Acad. Sci. Proc. (ser. 2) 4: 369; Chamberlin, 1926, Cat. 

 Buprestidae North Amer., p. 172; Obenberger, 1934, in Junk (pub.), Coleopt. 

 Cat., pt. 132, p. 652. 



