326 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



Boraria media (Chamberlin) 



Figures 8-12 



Nannaria media Chamberlin, 1918, p. 125. — Attems, 1938, p. 199. 

 A-poriaria geniculata Chamberlin, 1939, p. 6, fig. 10; 1940, p. 56 [new synonymy]. 

 Boraria media Wray, 1950, p. 44. — Chamberlin and Hoffman, 1958, p. 22. 

 Boraria geniculata Chamberlin and Hoffman, 1958, p. 22. 



Type specimens. — Holotype and paratypes of Nannaria media 

 (MCZ), from Burbank, Carter Co., Tenn., collected by Roland 

 Thaxter. Holotype and paratype of Boraria geniculata (RVC), from 

 Soco Falls, Jackson Co., N.C., collected Apr. 29, 1939, by Nell B. 

 Causey. 



Diagnosis. — Dorsum bro^vnish black, paranota with reddish or 

 chestnut spots; epicranial suture distinct and ventrally branched in 

 the interantennal isthmus; metatergites without rows of small tuber- 

 cules; some, however, tend to be finely rugulose laterally; coxae un- 

 spined; legs longer than in B. stricta, tibiae twice as long as broad. 



Description. — Male topotype, 2 miles S. of Burbank, Tenn. 

 Body length 24 mm., greatest width 4.9 mm., W/L ratio 20.4%. 

 Dorsum nearly black, the paranotal spots reddish chestnut ; underparts 

 nearly white, distal 2 segments of legs becoming yellowish. 



Head of normal proportions in relation to body size, the surface 

 smooth and polished. Epicranial suture distinct, not punctate, 

 branched in the interantennal isthmus, the lateral arms extending to 

 the antennal sockets. Genae flat with prominent median impression, 

 not margined laterally. Facial setae: 2-2 supra-antennal ; 1-1 frontal; 

 1-1 clypeal; 4-4 genal. Interantennal isthmus broad (1.0 mm.), 

 about 19% of the antennal length. Antennal long (5.3 mm.) and 

 slender, 1st article large, globose, with 4 long macrosetae on the 

 dorsal side, otherwise glabrous; 2nd article elongage, clavate, slightly 

 geniculate basally, distally exceeding genal apex; articles 3-6 similar 

 in size and shape, cjdindric, slightly clavate, with sparse scattered 

 erect setae and a subterminal whorl of 3 or 4 macrosetae; 7th article 

 small, subconic, truncate, densely setose, without sensory areas; 4 

 small terminal sensory cones. 



Collum large, convex, about as wide as head across mandibles, not 

 as wide as following tergite; entire front edge evenly curved, the rear 

 edge nearly straight across dorsum and not emarginate, laterally 

 curved forward toward the rounded lateral ends. Surface smooth 

 and polished, cephalolateral submarginal ridge distinct nearly up to 

 median area. 



Body segments smooth, evenly convex, nearly flat, the 2 subseg- 

 ments of approximately equal length and diameter, meeting dorsally 



