A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 137 



Pronotum twice as wide as long, distinctly narrower at apex than at base, 

 widest at apical third ; sides strongly, arcuately converging anteriorly, slightly, 

 .arcuately converging from apical third to posterior angles; anterior margin 

 arcuately emarginate, with a broad, vague, median lobe; base slightly, arcuately 

 emarginate on each side, median lobe moderately produced, and subtruncate in 

 front of scutellum ; disk slightly convex, without depressions or elevated cal- 

 losities ; surface coarsely, rather densely, irregularly punctate, rugose at sides, 

 with a narrow, smooth, median space extending from base to apical third, and 

 four rounded, smooth spaces arranged transversely in front of middle, intervals 

 finely granulose. 



Elytra slightly wider than pronotum, nearly twice as long as wide; sides 

 nearly parallel from humeral angles to behind middle, then arcuately converging 

 to tips, which are separately broadly rounded ; lateral margins coarsely serrate ; 

 basal depressions very deep ; humeral depressions shallow ; surface glabrous, 

 uneven, finely, confluently punctate in depressed areas, very sparsely punctate 

 on the dark, elevated spaces. Each elytron with a strongly elevated, straight, 

 longitudinal costa along sutural margin on apical half, merging into a broad, 

 irregular, dark, elevated space on basal half, with numerous irregular, elevated, 

 dark spaces, and with two more or less distinct discal foveae, a small one in front 

 of middle and a large, obliquely transverse one behind middle. 



Abdomen beneath coarsely, irregularly fossulate-punctate, more or less trans- 

 versely rugose at sides, smooth along anterior and posterior margins of sternites, 

 sparsely clothed with rather short, recumbent, inconspicuous hairs, intervals 

 indistinctly granulose; last visible sternite sinuate at apex, with a shallow, 

 transverse, median notch, and an obscure, submarginal ridge on each side at 

 basal half, lateral margins coarsely serrate ; eighth tergite densely, finely granu- 

 lose, coarsely, confluently punctate, broadly rounded and thickened at apex, but 

 not longitudinally carinate. Prosternum coarsely, rather densely, irregularly 

 punctate, sparsely clothed with moderately long, recumbent, white hairs ; anterior 

 margin arcuately rounded, with a broad, moderately long, median lobe. Anterior 

 femur with a distinct, obtuse tooth, which is coarsely dentate on outer margin. 

 Anterior and middle tibiae arcuate; posterior tibia straight. 



Length 11 mm., width 4.5 mm. 



Ma le. — Unknown. 



Eedescribed from the female type in the collection of W. J, 

 Chamberlin. 



Type locality: — Six miles west of Klamath Falls, Or eg. 



Distribution. — Only two females (type and paratype) have been 

 examined. Both specimens were collected at the type locality on June 

 14, 1922, by W. J. Chamberlin. 



Host. — The larval habits are unknown, but the adults were collected 

 on the western juniper (Juniperus occidentalis Hooker), which is 

 probably the host for this species. 



No variation was observed in the two specimens examined, except 

 in length, which ranged from 10.5 to 11 mm. 



(57) Chrysobothris juniperinus Chamberlin 



(Fig. 55 ;, fig. 119, B) 



Chrysobothris juniperinus Chamberlin, 1925, N. Y. Ent. Soc. Jour. (1924) 32: 

 192-193 (separate, pp. 191-192) ; 1926, Cat. Buprestidae North Amer., p. 

 158; 1929, Pan-Pacific Ent. 5: 115; Obenberger, 1934, in Junk (pub.), 

 Coleopt. Cat., pt. 132, p. 637 ; Chamberlin, 1934, Pan-Pacific Ent. 10 : 40, fig. 18. 



Female. — Only differing from the female type of lilaceous Chamberlin in being 

 more narrowly elongate and in having the third segment of the antenna slightly 

 shorter than the following two segments united. 



Length 9 mm., width 3.4 mm. 



Male. — Differing from the female in having the front of the head slightly 

 flatter and more densely pubescent, the last visible sternite semicircularly 

 emarginate at apex, the eighth tergite more sparsely punctured and the uppjr 

 margin projecting and angularly emarginate at apex, and in having the anterior 

 tibia armed with an elongate dilation near apex and with the tibia constricted 

 behind the dilation. 



Length 8.5 mm., width 3 mm. 



