NO. 3581 BALCLUTHA — BLOCKER 41 



Head wider than pronotum; vertex slightly longer medially than 

 next to eye, interocular width slightly less than three times median 

 length; ocellus located at a distance of from 1 to IK times its diameter 

 from eye; anteclypeiis slightly widened apically, not exceeding gena; 

 postclypeal sutm'es curved mesally above antennal pits; pronotum 

 less than 3 times as long as vertex; hind femoral chaetotaxy 2-1-1; 

 female with posterior margin of a,bdominal sternum VII irregularly 

 convex posteriorly. 



]\lale pygofer with less than 10 setae, posteroventral margin 

 projected ventrally; plates broadly triangular, not extending as far 

 as p3"gofer apex; connective expanded apically, truncate, longer than 

 style, stem longer than arms; style with preapical lobe rounded, 

 apical extension slightly curved, tapered, rounded apically; aedeagus 

 with dorsal apodeme curved anteriorly, shaft broad in lateral view, 

 curved ventrally then dorsally. 



Color strammeous; face without oblique brown lines; thoracic 

 venter not dark, forewings hyaline with stramineous tint. 



Holotype and paratype males, Pese, Panama, Oct. 22, 1952 (F. S. 

 Blanton), in the U.S. National Museum. This species was described 

 from these two specimens and five female specimens with the same 

 data. 



B. cochrani, new species, is apparently closely related to B. neglecta 

 (DeLong and Davidson) but can be distinguished by the curvature 

 and width of the aedeagus and its inconspicuous preatrium (see key). 

 This species was named in honor of Dr. James H. Cochran, head of 

 the Department of Entomology and Zoology at Clemson University, 

 who guided the author through his early career as an entomologist 

 and remains a faithful friend. 



Balclutha denticula, new species 



Figure 26 



Length of male 2.7 mm; head width .775 mm; pronotal width .750 

 mm; female unknown. 



Head wider than pronotum ; vertex as long next to eye as medially, 

 interocular width more than three times median length; oceUus 

 located at a distance less than its diameter from eye; anteclypeus 

 parallel margmed, slightly exceeding gena; postclypeal sutures curving 

 mesally above antennal pits; pronotum three times as long as vertex; 

 hind femoral chaetotaxy 2-1-1. 



Male pygofer with less than 10 setae, exceeding plates in length; 

 plates broadly triangular, apical one-fourth constricted; connective 

 approximately equal in length to style, stem and arms equal in length; 

 style with preapical lobe acute, apical extension slightly curved, acute 

 apically; aedeagus with a pair of processes arising ventrally at base, 



