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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 122 



B. punctata patula, new subspecies, can be distinguished from B. 

 punctata (Fabricius) only by the broader base of the aedeagus. This 

 structure is also similar to B. arctica Beirne but can be distinguished 

 by the shorter length of the shaft of the aedeagus in p. patula. 



Figure 2.—B. punctata patula: a-d, aedeagus, lateral view; e, female abdominal sternum 



VII, ventral view. 



BalclutJia mexicanay new species 



Figure 3 



Length of male 3.5 to 3.7 mm, of female 3.8 to 3.9 mm; head width 

 of male .825 to .875 mm, of female .850 to .875 mm; pronotal width of 

 male .875 to .925 mm, of female .925 to .975 mm. 



Head narrower than pronotum; vertex as long next to eye as 

 medially or occasionally slightly longer in some specunens, interocular 

 width more than three times median length; ocellus located at a 

 distance approximately twice its diameter from eye; anteclypeus 

 widest apically, sliglitly exceeding gena; postclypeal sutures parallel 

 above antennal pits; pronotum more than three times as long as 

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

 of abdominal sternum VII sinuate posteriorly. 



Male pygofer with less than 15 setae; plates broadly triangular, 

 extending posteriorly as far as pygofer apex; connective expanded 



