NO. 3585 MICROLEPIDOPTERA, XII — DUCKWORTH 15 



narrowing to rounded apex; aedeagus long, curved, blunt at apex; 

 vesica armed with one short, stout cornutus. 



Female genitalia: Unkno^\^l. 



Type: In the collection of the U.S. National Museum, no. 69087. 



Type-locality: Rancho Grande, Aragua, Venezuela. 



Distribution: Known only from the type-locality. 



Described from the male holotype: "Venezuela, Ar., Rancho 

 Grande, 1100 m., 16-19.1.66, (S. S. and W. D. Duckworth)"; and 

 one male paratype with the same data. 



This species is named in honor of Dr. F. Fernandez Yepez, distin- 

 guished entomologist at the Universidad Central de Venezuela, Mara- 

 cay, who has been of invaluable aid in my study of the family 

 Stenomidae. 



The long finger-like projection at the apex of the gnathos, fleshy 

 area on the sacculus, and shape and armature of the aedeagus in the 

 male genitalia readily separate this species from all others. 



Lethata irresolutn, new species 



Plate 2 (fig. 5); Figures 19, 20; Map 8 



Alar expanse 30 mm. 



Antenna whitish. Head brownish, lighter between eyes; second 

 segment of labial palpus light brown on outer side, whitish on inner 

 side, apical segment white. Legs whitish, fore- and midlegs shaded 

 ■\nth brown. Thorax and tegula fulvous. Fore wing fulvous with 

 costa narrowly deep ochreous underlined with purplish from base to 

 apical three-fourths; from apical three-fourths to tornus deep yellow; 

 dorsum irregularly edged mth gray; spot at end of cell purplish; cilia 

 bro^^^l \\\i\\ white tips. Hind wing whitish; cilia with tinge of brown 

 basally, whitish beyond. 



Male genitalia (slide WDD 3615, type): Uncus short, recurved; 

 gnathos short, thick, flattened dorsally; harpe broad, bluntly rounded; 

 anellar lobes symmetrical, consisting of broad base with two apical 

 processes, one long, digitate, the other short, recurved ; aedeagus with 

 large lateral spine near apex from base of which a small sclerotized 

 flange extends posteriorly, vesica armed with one large cornutus. 



Female genitalia: Unknown. 



Type: In the collection of the British Museum (Natural History). 



Tj'pe-locality: Agualani, Carabaya, 900 ft., Peru. 



Distribution : Known only from the type-locality. 



Described from the male holotype: "Agualani, Carabaya, 900 ft., 

 Oct. 05. wet season (G. R. Ockenden)." 



The shape of the anellar lobes and armature of the aedeagus readily 

 separates irresolnta from the other species of Lethata. 



