NEOTROPICAL MICROLEPIDOPTERA — DUCKWORTH 101 



Legs white shaded with brown . Thorax and tegula brownish ochreous, 

 with scattered fuscous scales; patches of brown scales at inner angle 

 and along dorsum; faint transverse line from dorsum to middle at 

 apical third; cilia brown basally, lighter beyond. Hindwing whitish, 

 dorsal half shaded with dark scales; cilia whitish. 



Male genitaha (slide WDD 3046) : Uncus pointed apically, shghtly 

 recurved; gnathos long, finger-hke; harpe broad basally, tapering 

 to pointed apex; anellar lobes asymmetrical; one long, narrow, 

 curved 90° laterad at middle and extended to base of opposite harpe; 

 the other shorter, broader, sharply recurved; aedeagus with large 

 recurved spine at apex, vesica without cornuti. 



Female genitalia: Unknown. 



Type: In the British Museum (Natural History). 



Type locaUty: Sao Paulo, Brazil. 



Distribution: brazil: Sao Paulo; Parang. 



This species is known only from the male type in the British Mu- 

 seum (Natural History) and one male specimen from Parana, Brazil, 

 in the collection of the United States Natonal Museum. 



The species is easily recognized by the striking development of the 

 anellar lobes in the male genitalia. 



Lethata asthenopa (Meyrick), new combination 



Stenoma asthenopa Meyrick, 1916, Exotic Microlepidoptera, vol. 1, p. 517. 



This species is known only from the male type in the British Mu- 

 seum (Natural History), which has not been available for study; 

 however, Clarke (1955, p. 212, pi. 106, figs. 2-2b) illustrates the wings 

 and male genitalia. From these illustrations it is apparent that S. 

 asthenopa belongs in the genus Lethata and is specifically distinct 

 from the other species. Judging from the original description, S. 

 asthenopa is closest to L. jusca, new species, in color and maculation. 

 The color of the forewing of L. asthenopa is somewhat lighter brown 

 than that of L. fusca. The genitalia afford a number of distinguish- 

 ing characters, particularly the shape of the anellar lobes and the 

 shape and armament of the aedeagus. 



Type: In the British Museum (Natural History). 



Type locality: Maroni River, French Guiana. 



Distribution: French guiana: Maroni River. 



Lethata bovinella (Busck), new combination 



FiGUBEs li,j, 3d, 4c 



Stenoma bovinella Busck, 1914, Proc. U.S. Nat. Mus., vol. 47, p. 50. 

 Stenoma curiata Meyrick, 1929, Trans. Ent. Soc. London, vol. 76, p. 515. (New 

 synonymy.) 



Alar expanse 19-20 mm. 



