12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



O. L. Cartwright Colin. [USNM]; 1-Globe, VIII, Duncan and Parker, O. L. 

 Cartwright Colin. [USNM]; 1-Globe, 24-VIII-52, F. H. Parker, O. L. Cartwright 

 Colin. [USNM]; 1-Tucson, 5-VIII-35, Bryant, 20, Van Dyke Colin. [CAS]; 

 1-Tucson, 16-VIII-35, R. H. Beamer, coll. at light, L. W. Saylor [CAS]; 8-Tucson, 

 16-VIII-35, R. H. Beamer, coll. at light [UK]; 2-Tucson, 5-VIII-35, Bryant 20 

 [INHS]; 1-Tucson, 10-VII-59, K. Radford, blacklight trap [UA]; 1-Tucson, 

 2-VIII-13, Shive [USNM]; 1-Tucson, 16-VIII-35, R. H. Beamer, M. Robinson 

 Colin. [USNM]; 1-Tucson, 30-VIII-13, J. Shive, Liebeck Colin. [MCZ]; 2-Tucson 

 1- VIII- 13, J. Shive [MCZ]; 1-Tucson, 5-VIII-35, Bryant, C. A. Frost Colin. 

 [MCZ]; 1-Tucson, 10-VIII-59, K. Radford, u.v. It. trap [UA]; 2-Wickenburg, 

 20-VIII-38, D. J. and J. N. Knull [OSU]; 1-Wickenburg, 20-VIII-38, D. J. and 

 J. N. Knull, M. Robinson Colin. [USNM]; 1-Douglas, X-1963, J. H. Russell, 

 blacklight [USNM]; 1-Douglas, summer 1964, J. H. Russell, blacklight [USNM]; 

 1-Palmerlee, Huachuca Mtns. [AMNH]; 1-Hope, Yuma Co., 12-VEII-48, grease- 

 wood desert, 1400 feet, at light, F. Werner and W, Nutting [UA]; 1-Sabino 

 Canyon, Catalina Mtns., Pima Co., 26-VII-55, F. G. Werner and G. D. Butler 

 [UA]; 1-Palo Alto, 29-30-VII-16, Mark Robinson Colin. [USNM]. Mexico: 

 1-San Bernardo, Rio Mayo, L. W. Saylor Colin. [CAS]; 1-Durango, "enter 

 identification Care No. 1830, Bufo [X]," L. W. Saylor Colin. [CAS]; 1-Acatlan, 

 Puebla, 7-V-57, cerca luz, Wm. W. Gibson [INI A]; 1-Venodio, Sin., 17-V-18, 

 J. A. Kusche [probably Venadillo (Boyle, 1956, and Cantrall, in litt.)]; 1-Tepic, 

 ex Museo H. W. Bates, 1892, Oberthur Colin. [MNHP]; 1-Ajijic, Jalisco, 21-VI- 

 64, W. L. Nutting, 5140 feet [UA]; 1-Ajijic, Jalisco, 16-VII-64, W. L. Nutting, 

 u.v. It. trap [UA]. 



Host: The host has not been established for this species even 

 though it is the most abundant in collections. We suspect that it 

 is associated with Acromyrmex versicolor and/or Atta mexicana although 

 the latter is not known from Tucson or Globe, Ariz., where most 

 of the E. duncani have been found. (See also under "Biology and 

 Ecology.") 



Euparixia bruneri Chapin 



Figure 3 



Euparixia bruneri Chapin 1940, pp. 40-41. [Type: Baragua, Cuba; U.S. Na- 

 tional Museum, No. 53329.] 



Length 5.25 mm, width 2.14 mm. Elongate, convex, feebly shining 

 (often encrusted with reddish dirt), reddish brown. Pronotum 

 constricted at side on posterior one-half; sides broadly explanate 

 on anterior one-half. 



Head: Clypeus truncate across middle one-third, sides feebly 

 curving to prominent genal lobes. Eyes not visible when head is 

 in repose. Clypeal apex inflexed ventrally at middle. Head finely, 

 densely punctured on basal one-third, gradually diminishing to 

 slightly granulate at middle and evenly, finely granulate on anterior 

 one-third. 



Pronotum: Broader than long, very convex. Punctation like 

 pits at base, becoming less coarse and less dense toward anterior 



