A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 



139 



separating the two species, except that the type of lilaceous is slightly 

 broader, more cupreous, and the third segment of the antenna is as 

 long as the following two segments united. In a good series of speci- 

 mens collected in the same locality and on the same host plant by 

 Gray and Schuh the differences given above proved to be variable 

 in the specimens examined. These two species seem to be identical, 

 but the writer is retaining both names until more material and males 

 of lilaceous are available for study. In case they should prove to be 

 the same species, lilaceous will have page priority. 



(58) Chrysobothris burkei Chamberlin 



(Fig. 56; fig. 119, (J) 



Chrysobothris burkei Chamberlin, 1929, Pan-Pacific Ent. 5: 110-111. figs. 2-3; 

 Obenberger, 1934, in Junk (pub.), Coleopt. Cat., pt. 132, p. 613. 



Figure 56. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C) and of female (D) of Chrysobothris burkei. 



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

 purplish brown on smooth elevations, cupreous to bronzy green in the punctured, 

 depressed areas ; beneath varying from reddish cupreous to golden green. 



Head bluish green anteriorly, becoming brownish cupreous on vertex and oc- 

 ciput, with two small, more or less distinct callosities on front, and a distinct, 

 smooth, longitudinal carina on occiput, the carina slightly bifurcate anteriorly ; 

 front nearly flat ; surface coarsely, irregularly, confluently punctate, transversely 

 rugose behind clypeus, rather densely clothed with long, erect, inconspicuous 

 hairs, intervals densely granulose ; clypeus acutely, angularly notched at middle, 

 feebly, obtusely toothed on each side of notch, then transversely sinuate externally. 

 Antenna bronzy green basally, brownish cupreous apically, slightly narrowed to 

 apex; intermediate segments triangular, not compact, slightly wider than long, 

 broadly rounded at outer margins ; third segment slightly shorter than following 

 two segments united. 



Pronotum nearly twice as wide as long, slightly wider at base than at apex, wid- 

 est near apical third ; sides rounded anteriorly, strongly converging from apical 

 third to near posterior angles, where they are parallel ; anterior margin slightly 



