A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 107 



near apex ; second extending from median fovea to near apex ; third vaguely 

 indicated posteriorly along lateral margin; and with three reddish-cupreous 

 foveae, one in front of middle and two near apical third. 



Abdomen beneath coarsely, sparsely punctate, smooth along anterior and 

 posterior margins of sternites, densely clothed at sides with long, recumbent, 

 white hairs, without smooth lateral callosities, the intervals finely, densely 

 granulose ; last visible sternite deeply, arcuately emarginate at apex, without a 

 submarginal ridge, lateral margins serrate ; eighth tergite densely granulose, 

 coarsely, sparsely punctate, deeply, narrowly emarginate at apex, but not longi- 

 tudinally carinate. Prosternum coarsely, confluently punctate, more or less 

 rugose, densely clothed with long, recumbent, white hairs, with a distinct, long, 

 median lobe in front. Anterior femur with a large, acutely triangular tooth, which 

 is coarsely dentate on outer margin. Anterior tibia arcuate, with a short, rounded 

 dilation at apex ; middle and posterior tibiae straight. 



Length 6 mm., width 2.25 mm. 



Eedescribed from a male in the United States National Museum 

 labeled "Arizona, Morrison," which is probably a specimen of the type 

 series, although Waterhouse described the species from specimens 

 collected by Morrison in northern Sonora, Mexico. There is some 

 doubt about the locality of the material collected by Morrison and 

 labeled northern Sonora, as most of his material was collected in south- 

 ern Arizona, and it is doubtful if he made any collections in Mexico. 



Female. — Differing from the male in having the last visible sternite shallowly 

 emarginate or transversely sinuate at apex, the eighth tergite coarsely, conflu- 

 ently punctured, broadly rounded at apex, longitudinally carinate, and more or 

 less depressed on each side of carina, and the anterior tibia unarmed at apex. 



Type locality. — Northern Sonora, Mexico. Type in the British 

 Museum. 



DISTRIBUTION 



From material examined :' 



Arizona: No definite locality (H. K. Morrison). Catalina Springs, April 12-20; 

 Catalina Mountains, May 16; Tucson, reared (Hubbard and Schwarz). 

 Sabino Canyon, March to April, reared (G. Hofer, W. D. Edmonston, and 

 F. C. Craighead). Florence, June 19 (C. R. Biedermann). Nogales, June 

 9, 1933, intercepted on hennequin fiber from Mexico. Carr Canyon, Huachuca 

 Mountains. Globe, May 12, 1934 (F. H. Parker). 



Mexico: Northern Sonora (H. K. Morrison). 



New Mexico: Las Cruces (H. F. Wickham). 



Texas : El Paso, April 5, 1902 ; Ysleta, April 3, 1902. Van Horn, May 23, 1932 

 (E. G. Linsley). 



Chamberlin (1926) gives the distribution and type locality as Texas, 

 which is incorrect, as it was described from northern Sonora, Mexico. 



Hosts. — This species has been reared from mesquite (Prosopis juli- 

 flora (Swartz) De Candolle) collected at Catalina Springs and Sabino 

 Canyon, Ariz., by G. Hofer and Hubbard and Schwarz, and from 

 Vauquelinia calif omica (Torrey) Sargent, collected at Sabino Canyon 

 by G. Hofer. 



The color and sculpture are rather constant, but in a few cases 

 the sides of the pronotum are yellowish instead of reddish cupreous. 

 The clypens is either deeply angularly or semicircularly emarginate 

 in front and in the males is usually greenish, but occasionally speci- 

 mens are found in which it is reddish cupreous like the rest of the 

 surface. The front of the head in the females varies in color from 



