50 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



hind femoral chaetotaxy 2-1-1; female with posterior margin of 

 abdominal sternum VII irregularly concave, with a rounded median 

 lobe. 



Male pygofer with posteroventral margin bearing a broad lobe 

 which is bisected by a heavily sclerotized discal band extending 

 obliquely almost to ventral margin, less than 15 setae present; plates 

 broadly triangular, apical one-third curved dorsally; connective 

 expanded apically and bifid, two-thirds length of style, stem and arms 

 nearly equal in length, style with preapical lobe rounded, apical 

 extension curved laterally, gradually tapered and rounded apically; 

 aedeagus with dorsal apodeme one-half length of shaft wliich is 

 regularly curved anteriorly, narrowed apically, and recurved 

 posteriorly. 



Color stramineous; face without obhque brown lines (faint trace in 

 some females) ; thoracic venter not dark ; f orewings hyaUne with tan 

 tint. 



The male holotype from Brownsville, Tex., in the DeLong collection 

 has been examined. Additional material examined was from Texas 

 (Mar. and June), Panama (Sept. and Oct.), and Cuba (Feb. and Mar.). 



B. knulli (Davidson and DeLong) appears to be related to B. incisa 

 (Matsumura) and B. neglecta (DeLong and Davidson) but can be 

 readily distinguished by the recurved apex of the aedeagus and the 

 shape of the pygofer of knulli. 



Balclutha sandersi (Davidson and DeLong), new combination 



Figure 33 



Agellus sandersi Davidson and DeLong, 1935, Proc. Washington Ent. Soc, vol. 37f 



p. 108. 

 Nesosieles sandersi duhiata Caldwell, 1952, in Caldwell and Martorell, Journ 



Dept. Agric. Porto Rico, vol. 34, p. 87. 



Length of male 2.7 to 3.7 mm, of female 3.2 to 3.8 mm; head width 

 of male .650 to .825 mm, of female .750 to .825 mm; pronotal width of 

 male .650 to .800 mm, of female .750 to .850 mm. 



Head as wide as or wider than pronotum; vertex as long next to eye 

 as medially or shghtly longer medially, interocular width tln-ee times 

 median length; ocellus located at a distance more than twice its 

 diameter from eye; anteclypeus wider apically, exceeding gena; 

 postclypeal sutures parallel above antennal pits; pronotum three 

 times as long as vertex; hind femoral chaetotaxy 2-2-1; female with 

 posterior margin of abdominal sternum VII truncate or shallowly 

 concave. 



Male pygofer with less than 15 setae, posteroventral margin with 

 shght projection; plates extending posteriorly as far as pygofer apex, 

 rounded apically; connective expanded apically and bifid, shghtly 



