A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 87 



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

 serrate; basal depressions broad and very deep; humeral depressions broad 

 and moderately deep; surface glabrous, slightly uneven, coarsely, irregularly 

 punctate, more densely punctured toward sides, intervals vaguely granulose, 

 with a few irregular, smooth spaces. Each elytron with three more or less 

 distinct longitudinal costae ; first distinctly elevated, extending along sutural 

 margin from apex to basal third; second sinuate, broadly interrupted by two 

 densely punctured, irregular, quadrate foveae, the first just in front of middle 

 and the other at apical third; third costa short, interrupted posteriorly by 

 second fovea, behind which it is joined to the second costa. 



Abdomen beneath coarsely, deeply, rather densely fossulate-punctate, smooth 

 along anterior and posterior margins of sternites, sparsely clothed at sides 

 with short, recumbent, white hairs, with smooth, slightly elevated, lateral 

 callosities, intervals densely granulose; last visible sternite broadly, arcuately 

 emarginate at apex, without a distinct submarginal ridge, lateral margins 

 coarsely serrate; eighth tergite coarsely serrate and vaguely notched at apex, 

 coarsely, densely punctate, densely granulose, but not longitudinally carinate. 

 Prosternum coarsely, confidently punctate, sparsely clothed with long, recum- 

 bent, white hairs, with a distinct, short, median lobe in front. Anterior femur 

 with a very short, obtuse tooth, which is slightly dentate on outer margin. 

 Anterior tibia arcuate, with a small, acute tooth at apical third; middle and 

 posterior tibiae straight. 



Length 8 mm., width 3.25 mm. 



Redescribed from the male type, No. 2695, in the Museum of Com- 

 parative Zoology, Cambridge, Mass. 



Female. — Differing from the male in having the front of the head uniformly 

 cupreous, the antenna piceous, with a faint bronzy tinge, the prosternum more 

 sparsely punctured and sparsely clothed with short, white hairs, the last 

 visible sternite shallowly, arcuately emarginate at apex, the eighth tergite 

 rounded at apex and more coarsely, confluently punctured, and the anterior 

 tibia unarmed. 



Type locality. — Santa Fe, N. Mex. Type simply labeled with a 

 dark-green disk. 



DISTRIBUTION 



From material examined: 



Aeizona: Williams, May 27 to July 28; Bright Angel, July 10-11; Prescott, 



June 20 (Barber and Schwarz). Phoenix (W. Robinson). Grand Canyon, 



June 25 (E. G. Linsley). Pinal Mountains and Prescott, June- July, 1894 



(H. F. Wickham). 

 Colorado: Buena Vista, July 1-6, 1896, 7,900-8,000 feet; Salida, July 7 (H. F. 



Wickham). 

 New Mexico: Las Vegas Hot Springs, August 4-14 (Barber and Schwarz). 



Estancia and Torrance County, 1925 (J. R. Douglass. Santa Fe, June 



(T. D. A. Cockerell). Albuquerque (H. F. Wickham). 

 Utah : Beaver Creek Hills, Beaver County, June 20. Zion National Park, March 



23, 1933, reared (D. De Leon). 



It is recorded by Fall (1894, 1901) as abundant on pines in the 

 San Bernardino Mountains, Calif., during July and August, and by 

 Chamberlin (1926) from Davis Mountains, Tex., but no specimens 

 have been examined from either of these States and these records 

 are probably taken from misidentified specimens. The California 

 record may refer to semisculpta. 



Hosts. — This species has been reared from single-leaf pine (Pinus 

 monophylla Torrey and Fremont) collected by D. De Leon in Utah, 

 and the adults have been collected by Barber and Schwarz at Wil- 

 liams, Ariz., on western yellow pine (Pinus ponderosa Lawson) and 

 alligator juniper (Juniperus pachyphloea Torrey). 



The color and sculpture on the dorsal surface of the body are 

 rather constant, except that in a number of specimens there are four 

 more or less distinct, smooth spots arranged transversely on the 



