BALCLUTHA — BLOCKER 



11 



apically, only slightly bifid, longer than style, stem longer than arms, 

 angle between arms roimded; style with preapical lobe rounded, 

 apical extension acute apically; aedeagus very broad basally, shaft 

 slender, curved dorsally then anteriorly. 



Color greenish brown; face without oblique brown lines; thoracic 

 venter dark; forewings hyaline, tinted greenish brown; abdominal 

 dorsum dark. 



Holotype and paratype males from Saltillo Coah. [Mexico], 

 Sept. 23, 1941 (DeLong, Good, Caldwell, and Plummer), deposited 



Figure 3. — B. mexicana: a, b, aedeagus, lateral view; c, style and connective, dorsal view; 

 d, valve and plate, ventral view; e, male pygofer, lateral view;/, female abdominal sternum 

 VII, ventral view. 



in the DeLong collection. A female specimen, same label data, and 

 three specimens from Distrito Federal, Mexico, have also been 

 examined. 



B. mexicana, new species, is closely related to B. punctata (Fabricius) 

 but can be readily distinguished by the shape of the aedeagus which is 

 much broader basally in mexicana. 



