Feb., 1919] 



Notes on the Nearctic Nusa 



245 



Pubescence of upper surface of legs, and of tarsi black. Upper surface 

 of thorax with sparse short, pale hair; tuft of hair in front of halteres 

 pale, in front of wings black; thoracic and scutellar bristles also black. 

 Pubescence of abdomen chiefly pale on first three, mostly black on 

 remaining segments, longer at sides; each of segments 2-6 with a strong 

 bristle on each side. Wings fumose, pale toward base, first posterior 

 cell open. Male forceps and claspers as shown in Figure 1. Length, 

 24 mm. 



Type, a male from Florida (U. S. N. M.) 

 This specimen was figured in The Insect Book, L. O. Howard, 

 1901, PI. XXIX, Fig. 15, as Nusa fulvicauda. 



Male Genitalia of Nusa 



Fig. 1. Nusa cruenta n. sp. Forceps from side. 



Fig. 2. Nusa fulvicauda Say. Forceps from side. 



Fig. 3. Nusa sicaria n. sp. Forceps from side. 



Fig. 4. Nusa abdominalis Brown. Forceps from side. 



Fig. 5. Nusa n. sp. near rubida Williston. Forceps from side.HThis species, from 



Mexico, is not described but is figured to show an additional variation of 



the Nusa type of hypopygium. 



