12 MISC. PUBLICATION 4 70, IT. S-. DEPT. OF AGRICULTURE 



Abdomen beneath nearly glabrous, densely, finely granulose, sparsely, finely, 

 indistinctly punctate, with fine, transversely sinuate lines; last visible sternite 

 broadly, shallowly, arcuately emarginate at apex. Prosternum glabrous, 

 coarsely, transversely rugose ; anterior margin truncate. Anterior tibia slightly 

 arcuate; middle and posterior tibiae straight; all tibiae armed with a number 

 of small teeth on inner margins. 



Length 14.5 mm., width 6 mm. 



Bedescribecl from the the male lectotype, No. 3501, in the Academy 

 of Natural Sciences of Philadelphia. 



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

 piceous, the last visible sternite truncate at the apex, and the anterior tibia 

 unarmed on the inner margin. 



Type locality. — Texas, no definite locality. 



DISTKIBUTION 



From material examined: 



Aeizona: No definite locality. 



Texas: Point Isabel, July (H. F. Wickham). Brownsville, May 28, 1938. 



Midland, September 19, 1912 (Rehn and Hebarcl). 

 Mexico : Reynosa, May 20, 1895. 



Chamberlin (1926) records it from California; Yuma, Ariz.; and 

 New Braunfels, Tex. The one mentioned by him from Prescott, 

 Ariz., in the Mason collection, is arizonica Knull. 



Host. — Adults have been cut from dry mesquite (Prosopis juliflora 

 (Swartz) De Candolle). 



Very little variation was observed in the specimens examined, but 

 in one of the paratypes from Texas the sides of the pronotum are 

 arcuately constricted behind the middle. The length is from 14.5 

 to 19 mm. 



Chamberlin (1926) gives the type locality as Fort Yuma, Ariz., but 

 Horn in his original description states that it is known from Texas 

 to Fort Yuma, and the designated lectotype is from Texas. Paratype 

 No. 2, from Arizona in the Horn collection, is arizonica Knull. The 

 specimen mentioned by Horn from Illinois is without a head and is 

 probably mislabeled as to locality. 



(5) ACTENODES ARIZONICA Knull 

 (FIG. 110, E) 



Actenodes arizonica Knull. 1927, Ent. News 38: 115-116; Leng and Mutchler, 

 1933, Cat. Coleopt. North Amer., sups. 2-3, p. 29. 



Female. — Rather broadly elongate, slightly convex above, subopaque, bronzy 

 green, with a faint purplish tinge; beneath purplish brown, with a faint 

 bronzy-green reflection, and more strongly shining than above. 



Head piceous, with a purplish and bronzy tinge in different lights, and 

 with a narrow, longitudinal carina on occiput, and an obscure chevron on 

 vertex; front slightly convex; surface glabrous, densely, coarsely, deeply punc- 

 tate on occiput, more coarsely, confluently punctate and more or less rugose 

 on the front; clypeus truncate in front, with a rounded tooth at middle; eyes 

 separated from each other on the occiput by less than half their width at widest 

 part. Antenna short, uniformly piceous, subequal in width to apex; inter- 

 mediate segments compact, wider than long, broadly rounded at outer margins ; 

 third segment nearly as long as the following two segments united. 



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

 near base ; sides slightly, arcuately converging from near base to apical angles, 

 sinuate near base ; posterior angles rectangular ; base transversely sinuate on each 



