AET. 19. MOTHS OF THE GENUS DIATRAEA DYAR AND HEINRICH 23 



Four males and one female before us, all from the type locality. 

 The life history is unknown. 

 Type. — In National Collection. 

 Type locality. — Audubon Park, La. 



DIATRAEA MARONIALIS Schaus 



Figures 17, 64 



Diatraea maronialis Schaus, Proc. Ent. Soc. Washington, vol. 24, 1922, 

 p. 139. 



Ground color of fore wing light straw yellow ; discal and terminal 

 dots distinct, blackish; median area broadly shaded with brown, 

 limited by the outwardly placed outer line, which reaches the margin 

 above vein 5, leaving the tornal area broadly clear. Hind wing 

 soiled whitish in the male, somewhat soiled also in the female. Front 

 with a sharp-pointed tubercle. Hind tibia of the male without 

 hair tuft. 



Expanse. — Male, 20-25 mm. ; female, 26-31 mm. 



Male genitalia distinguished by their extremely slender uncus and 

 gnathos, the abruptly pointed, smooth arms of anellus, and the slight 

 smooth projection from costal base of harpe. Figured from type. 



Female genitalia distinguished by the slight chitinous ring about 

 the genital opening. Figured from specimen from the tj^pe locality. 



Abdomen of male with pair of lateral hair tufts on second segment. 



Two males and three females are before us : St. Jean and Cayenne, 

 French Guiana; Rio Tapajoz, Amazons, Brazil (Dognin Collection). 



The life history is unknown. 



Type. — In National Collection. 



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



DIATRAEA UMBRIALIS Schaus 



Diatraea umhrialis Schaus, Proc. Ent. Soc. "Washington, vol. 24, 1922, p. 139. 



Fore wing whitish straw, all the veins and intervenules lined with 

 concolorous brown; no discal or terminal dots or other discolorous 

 markings; outer line a broad ill-defined shade from before tornus to 

 apex. Hind wing whitish, soiled at apex in female. Front with a 

 sharp-pointed tubercle. 



Expmise. — Female, 25-29 mm. 



Female genitalia as in maronialis. 



Two females are before us, St. Jean and St. Laurent, French 

 Guiana. 



The life history is unknown. 



Type. — In National Collection. 



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



