AKT. 19. MOTHS OF THE GENUS DIATRAEA DYAR AXD HEINRICH 13 



Male genitalia with lateral lobes of tegumen triangular and bluntly 

 pointed. Basal projection from costa of harpe, large, irregular, 

 roughened, but not scobinate or dentate. Gnathos spined for half its 

 length from apex. Arms of anellus smooth. 



Female genitalia similar to those of instructella, except that bursa 

 is longer. 



Two males only before us, the type and one other specimen, the 

 latter from Platation Skeldon, British Guiana, October, 1914 (H. W. 

 B. Moore). Also five females, doubtless referable here, from French 

 Guiana (Dognin Collection). 



Mr. Moore's specimen was bred from a larva in sedge. We have no 

 further data on the life history. 



Type. — In National Collection. 



Type locality. — St. Laurent, Maroni River, French Guiana. 



Food plant. — Cyperns species. 



DIATRAEA INDIGENELLA, new species 

 Figure 51 



Similar in general appearance to fuscella; larger; lighter in color, 

 brownish straw; the markings narrower and less contrasted. Hind 

 wings in the female, brown. Front with a pointed tubercle. 



Expanse. — Female, 25-38 mm. 



Female genitalia similar to those of continens and instructella; 

 distinguished by the strong chitinous ring about the neck of bursa. 



Described from female type and four female paratypes, all from 

 the type locality, 1895 and 1897 (Dognin Collection). 



The life history is unknown. 



Type.—C2it. No. 29,426. U.S.N.M. 



Type locality. — Popayan, Colombia. 



DIATRAEA INCOMPARELLA, new species 



A medium-sized species similar to rufinella, but with the fore wing 

 of a bright- yellowish brown straw ; veins faintly dark lined ; discal 

 dot small or absent ; small terminal black dots between the veins. 

 Hind wing white (female). No males are before us, but it is proba- 

 ble that the wing markings are more distinct, and possibly there is a 

 hair tuft on the hind tibia. Front strongly bulging, though without 

 tubercle. 



Expaiise. — Female, 26-31 mm. 



Female genitalia as in saccharalis. 



Seven females are before us, three from Taperinha, Amazons, 

 Brazil, and four from Rio Maderia, Amazons, July- August (Fassl), 

 from the Schaus and Dognin Collections. 



Life history unknown. 



Type.—Q.^k. No. 29,427, U.S.N.M. 



Type locality. — Taperinha. Amazons, Brazil. 



