84 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 117 



wing, in fold, a small fuscous spot and slightly beyond, costad, a 

 similar mark; at basal third, in cell, a conspicuous fuscous blotch 

 extending obliquely and outwardly to slightly beyond fold; a similarly 

 colored, subquadrate blotch extends from middle of wing, in cell, to 

 fold; area between the two large dark blotches, and beyond the outer 

 one, conspicuously paler, less irrorate with fuscous than rest of wing 

 and with scattered ocherous scales; cilia pale grayish fuscous. Hind- 

 wing pearly gray in male, gray in female; cilia pale grayish fuscous. 

 In the male the undersides of both fore- and hindwings are clothed 

 with heavy, black sex-scaling; upper side of male hindwing with black 

 sex-scaling along cost a and inner margin and also with conspicuous 

 whitish-ocherous hair pencil from upper sm-face of costa. Foreleg 

 cinereous, femur and tibia shaded with fuscous on outer side; tarsi 

 fuscous annulated, mid- and hindlegs cinereous, irrorate and shaded 

 with fuscous. Abdomen grayish fuscous above, sordid white beneath; 

 anal segment ocherous white. 



Male genitalia (slide 10751) : Dorsal element of harpe about as 

 long as tegumen, curved ventrad, gradually thickening to near distal 

 end, then sharply curved inwardly, terminating in a sharp point; 

 ventral element small, papUlate. Gnathos spoon shaped, broadly 

 expanded distally. Uncus short, pointed posteriorly. Vinculum 

 produced posteriorly with edge deeply incised, anterior margin round- 

 ed. Aedeagus about as long as tegumen, slightly curved, stout, distal 

 end slightly dilated, proxunally bulbous. 



Female genitalia (sUdes 10410, 10752): Ostium broad. Ductus 

 bursae less than half the length of bursa copulatrix, narrowly funnel 

 shaped, sclerotized except for short membranous section before middle; 

 ductus seminalis from junction of ductus bm"sae and bursa copulatrix; 

 signum a strong, slightly curved, thornUke process arising from a 

 slender, elongate, sclerotized base. 



Type: Masafuera: Quebrada de las Casas (Jan. 22, 1955). 



Described from the type male and one female paratype, both with 

 identical data. 



The conspicuous, black sex-scaling, plus the hair pencil from the 

 hindwing at once distinguish the male from other species. The female, 

 however, is distinguished chiefly by the pale area between the two 

 large dark blotches of the forewing. 



Gnorimoschema operculella (Zeller) 



Oelechia (fBryotropha) operculella Zeller, 1873, Verb. K. Zool-Bot. Gesell. Wien, 

 vol. 23: p. 262, fig. 17. 



Distribution: Masatierra: Bahia Cumberland, 3 99 (Mar. 4-12, 

 1955). 



