362 PROCEEDINGS OF THE XATIOXAI. MUSEUM vol.84 



The species is readily identifiable by the scobinate aedeagus and 

 apically compressed uncus of the male, the distinct rugositj'^ of the 

 membranous area behind the gentital opening, and the sinuate mar- 

 gin of the genital opening in the female. 



RUPELA ALBINELLA (Cramer) 



Plate 22, Figures 2-2(/ ; Pl.\te 29, Figxjbes 2G-26?> 



Scirpophof/a ulhineUa Cila.mer, Papilloiis oxotiques des trois parties du 

 moiKle . . ., vol. 4, pi. 372, fig. D, 17S1 ; female. 



Cramer's figure would fit almost any of the white species with yel- 

 low anal (female) tuft treated in this paper, and the name has been 

 indiscriminately applied. Inasmuch as the type is nonexistent, I am 

 fixing the name to the species apparently most abundant in the type 

 localit}^ Dr. W. T. M. Forbes captured a male and female in copula, 

 and we are therefore able to associate the sexes. 



Male. — Wings white. Fore wing with veins 11 and 12 separate or, 

 for a short distance, closely approximate ; 4 and 5 connate or shortly 

 stalked. Hind wing with 4 and 5 connate or stalked. Anal tuft 

 white. 



Alar expanse. 20-34 mm. 



Genitalia with gnathos beaklike but having rather prominent lat- 

 eral arms (attaching to tegumen) ; in ventral aspect basal half 

 rounded (central part of lower margin convex) ; apical half tapering 

 slightly to bluntly pointed apex; apex upturned (lateral view) ; inner 

 surface (under high magnification) finely granulate, not spined or 

 serrate. Uncus moderately stout ; basal part with central dorsal exca- 

 vation; a short but prominent dorsal keel near base; apical half digi- 

 tate, very slightly broadened near apex ; apex rounded. Harpe with 

 lower margin indented near cucullus ; apex rounded ; basal process of 

 costa not strongly sclerotized nor much produced; sacculus without 

 apical projection, simple. Anellus consisting of ventral plate and a 

 rugose, sclerotized dorsal piece, the latter bearing several small, 

 inconspicuous spines; ventral plate w^itli lateral margins concave. 

 Aedeagus cylindrical, slightly widened at apex; one lateral margin 

 near apex weakly serrate. 



Female. — Wing color and venation as in the male. Anal tuft 

 yellow. 



Alar expanse, 27-45 mm. 



Genitalia with genital plate well defined, sclerotized, its caudal 

 margin angulate; genital opening rigid, its lower margin semicircu- 

 lar; ductus bursae strongly sclerotized toward genital opening. 

 There is some variation in the size of the genital opening and in the 

 width of the ductus in specimens from different localities — especially 



