BALCLUTHA — BLOCKER 



49 



The male holotype, Puerto Rico, in the U.S. National Museum has 

 been examined. Other specimens examined were from Florida, 

 Puerto Rico, Panama, and Surinam. 



B. curvata Caldwell is very closely related to B. Jlavescens (Baker) 

 but can be distinguished by several characters. The preapical lobe 

 of the style forms a more acute angle; the apex of the connective is 

 rectangular and truncate; and the aedeagus is more strongly cm'ved 

 anteriorly in curvata. 



Balclutlia knulli (Davidson and DeLong), new combination 



Figure 32 



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

 p. 109. 



Length of male 2.9 to 3.0 mm, of female 2.8 to 3.1 mm; head width 

 of male .800 to .825 mm, of female .800 to .825 mm; pronotal width of 

 male .725 to .775 mm, of female .750 to .800 mm. 



Head wider than pronotum; vertex usually as long next to eye as 

 medially or sHghtly longer medially, interocular width approximately 

 three times median length ; ocellus located at a distance aprpoximately 

 equal to its diameter from eye; anteclypeus slightly wider apically, 

 not exceeding gena; postclypeal sutures parallel above antenna! pits; 

 pronotum with length from shghtly less to three times length of vertex; 



Figure 32. — B. knulli: a, aedeagus, lateral view; b, style and connective, dorsal view; 

 c, valve and plate, ventral view; d, male pygofcr, lateral view; e, female abdominal 

 sternum VII, ventral view. 

 226-964 — 67 4 



