VOL. 116 



108 PROCEEDINGS OF THE NATIONAL MUSEUM 



lobes symmetrical, approximately same width throughout; aedeagus 

 large, with large, heavUy sclerotized process posteriorly, vesica with- 

 out cornuti. 



Female genitalia: lUustrated in Clarke (1955, p. 350, figs 4-4c) 

 The illustration is not clear enough to provide a detailed description 

 ol the female genitalia. 



Type: In the British Museum (Natural History). 



T5^pe locaHty: Parang, Argentina. 



Distribution: Argentina: Parana, brazil: Castro, Parana. 



This species is known only from the female type in the British 

 Museum and one male specimen in the U.S. National Museum The 

 short broad harpe and large, heavily sclerotized, posterior process in 

 the aedeagus of the male genitalia readily separates L. pyrenodes from 

 ail other species. 



Lethata ruba, new species 



Figures 3a, 5e 

 Alar expanse 30 mm. 



Antenna whitish basally, brown beyond. Head whitish shaded with 

 rose, face hghter; second segment of labial palpus brown on outer side 

 hghter on inner side, apical segment brown. Legs whitish shaded 

 with brown. Thorax deep yellow ochreous lightly shaded with rose 

 with slight tuft of gray scales posteriorly. Forewing deep yellow 

 ochreous with costa narrowly brick red; broad band of pink extends 

 parallel to costa from base to apex blending into groundcolor at 

 apical third; spot at end of cell fuscous; few fuscous scales scattered 

 over entire wing; ciHa whitish tinted with rose. Hindwing whitish 

 ochreous lightly shaded with gray; ciha whitish. 



Male genitaHa (slide WDD 2S00, type): Uncus very short, broad 

 sharply recurved; gnathos short, V-shaped at tip; harpe short, rounded 

 at apex; anellar lobes asymmetrical; one narrow, pointed at apex; one 

 broad, with three large spines apically. Aedeagus with apex on one 

 side produced into long bladelike process, vesica without cornuti. 



Female genitaha: Unknown. 



Type: Nova Teutonia, Brazil, 3500 m. USNM 66688. 



Distribution: brazil: Nova Teutonia, 3500 m. (Aug.). 



Described from male holotype, Aug. 6, 1948 (Fritz Plaumann). 

 Nova Teutonia, Braz^, 3500 m. 



The shape of the asymmetrical anellar lobes and the bladelike 

 process on the apex of the aedeagus distinguish this species from all 

 others in the genus Lethata. 



