216 MISC. PUBLICATION 1 4 70, U. S. DEPT. OF AGRICULTURE 



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

 sides slightly, arcuately converging at anterior angles, parallel and slightly 

 sinuate from near anterior angles to posterior angles ; anterior margin slightly, 

 arcuately emarginate, with a slightly rounded median lobe ; base broadly emar- 

 ginate on each side, median lobe slightly produced, and broadly truncate in 

 front of scutellum ; disk moderately convex, without depressions or callosities ; 

 surface coarsely, transversely rugose, finely granulose, sparsely, finely punctate 

 between rugae. 



Elytra distinctly wider than pronotum, twice as long as wide, widest behind 

 middle; sides nearly parallel from humeral angles to apical third (slightly ex- 

 panded behind middle), then arcuately converging to tips, which are separately 

 broadly rounded ; lateral margins coarsely serrate ; basal depressions broad 

 and shallow; humeral depressions barely indicated; surface glabrous, coarsely 

 but not densely punctate apically, becoming more densely punctate and 

 obscurely, transversely rugose basally. Each elytron with a few broad, indis- 

 tinct, longitudinal costae, the first slightly elevated on apical half, the others 

 obsolete or only indicated by smooth lines, and with a broad, indistinct, 

 transverse depression in front of middle. 



Abdomen beneath coarsely, sparsely, irregularly fossulate-punctate, very 

 sparsely pubescent, with obscurely indicated lateral callosities, intervals in- 

 distinctly granulose; last visible sternite broadly, deeply, arcuately emarginate 

 at apex, the angle on each side bidentate, and with a serrate, submarginal ridge, 

 but lateral margins not serrate; eighth tergite coarsely, densely punctate, 

 broadly rounded at apex. Prosternum coarsely, densely, deeply punctate, 

 sparsely clothed with short, semierect, white hairs ; anterior margin with a dis- 

 tinct, rather long, median lobe. Anterior femur with a rather acute tooth, which 

 is dentate on outer margin. Anterior tibia slightly arcuate, with a narrow, 

 indistinct dilation at apex ; middle and posterior tibiae straight. 



Length 8 mm., width 3.25 mm. 



Redescribed from the male lectotype, No. 2703, in the Museum of 

 Comparative Zoology, Cambridge, Mass. 



Female. — Similar to the male but differing from it in having the last visible 

 sternite more shallowly emarginate at apex, with the angle on each side not 

 bidentate, and with a distinct, transverse, serrate, anteapical ridge, and the 

 anterior tibia unarmed at apex. 



Type locality. — Of analis, Matamoros, Mexico; lectotype simply 

 labelled with a dark-red disk. Of austinii, Mexico, no definite local- 

 ity ; type supposed to be in the Rene Oberthur collection, but has not 

 been examined by the writer. Chamberlin (1926) gives the type 

 locality as "Texas (Rio Grande)" but LeConte described the species 

 from specimens collected by Dr. Berlandiere at Matamoros, Mexico. 



DISTRIBUTION 



From material examined: 



Arizona: Sabino Canyon, April 19, 1940 (P. W. Oman). 



New Mexico: San Antonio, June 20, 1908, reared (Hastings collection). 



Mexico: Matamoros, type (Dr. Berlandiere). 



Texas: Brownsville, April- June (numerous collectors). Columbus, June 6; 

 Devil's River, May 3, 1907 (E. A. Schwarz). Cameron County, September 

 (H. F. Wickham). San Diego, May 7 (Hubbard and Schwarz). Victoria, 

 June 15, 1909 (J. D. Mitchell). 



Waterhouse (1887) records the species from Orizaba and Yucatan, 

 Mexico, and also from Guatemala. 



Hosts. — Found breeding in pecan (Hicoria pecan (Marshall) Brit- 

 ton) at Brownsville, Tex., by D. K. McMillan, and in horsebean 

 (Parkinsonia aculeata Linnaeus) and Mimosa lindheimeri Gray in 

 the same locality by H. S. Barber. The adults have been collected 

 on catclaw (Acacia greggii Gray) in Texas by E. A. Schwarz. A 



