40 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Male pygofcr and plates as B. neglecta; connective expanded 

 apically and truncate, slightly shorter than style, stem approximately 

 twice as long as arms; style with preapical lobe and apical extension 

 rounded; aedeagus with preatrium prominent, curved ventrally then 

 anteriorly, shaft extending posteriorly for more than one-half its 

 length, then curved dorsallj^, tapered at apex. 



Color from brown to greenish yellow; face commonly with oblique 

 brown lines on each side of midline; head and pronotum commonly 

 with longitudinal brown stripes and/or orange areas on dorsal surface; 

 thoracic venter dark; forewings hyaline to subhyaline. 



The female holotype in the Hungarian Natural History Museum, 

 Budapest, and a male paratype from the collection of R. Linnavuori 

 have been examined. A large number of additional specimens have 

 been examined from Chile, Peru, and some from Costa Rica. 



B. aridula Linnavuori is closely related to B. neglecta (DeLong and 

 Davidson) but can be distinguished by the shape of the preatrium of 

 the aedeagus and by the curvature of the shaft (see key). 



Balclutha cochrani, new species 



Figure 25 



Length of male 3.1 to 3.2 mm, of female 3.4 to 3.6 mm; head width 

 of male .850 mm, of female .875 to .950 mm; pronotal \vidth of male 

 .800 mm, of female .825 to .875 mm. 



Figure 25. — B. cochrani: a, aedeagus, lateral view; b, style and connective, dorsal view; c, 

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

 VII, ventral view. 



