206 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



At present I have before me several species that appear to be 

 distinct from those already described, but their description must 

 await the receipt of more carefully reared material accompanied 

 by larvae that have been properly associated with the moths. 



The generic synonymy as given by Meyrick/'' cannot be considered 

 correct for our North American species. Until more careful study 

 of all the genotypes can be made we must accept Meyrick's synonymy 

 for the species outside of North American, but the American 

 genera {Psilocorsis and Inga) certainly do not belong with Crypto- 

 lechia. The double bursa and the remarkable signum of the females 

 of Psilocorsis immediately distinguish this genus from all other 

 American oecophorids. 



KEY TO SPECIES OF PSILOCORSIS BASED PRIMARILY ON 

 COLORATION 



1. Fore wing with a broad, dark, transverse fascia at outer two- 



thirds obsoletella (Zeller) (p. 209) 



Fore wing without such fascia 2 



2. Fore wing with distinct purplish luster; species dark colored 3 



Fore wing without purplish luster, or if this is present, it is only 



faintly indicated; light-colored species 4 



3. Alar expanse 19 mna fletcherella Gibson (p. 216) 



Alar expanse 18 mm. or less caryae, new species (p. 215) 



4. Alar expanse 18 mm. or more 5 



Alar expanse 16 mm. or less " quercicella Clemens (p. 207) 



5. Fore wing with dark markings confined to the outer discal spot 



and a few spots around termen faginella (Chambers) (part) (p. 213) 



Fore wing otherwise 6 



6. Thorax much darker than head reflexella Clemens (p. 212) 



Thorax and head nearly concolorous faginella (Chambers) (part) (p. 213) 



KEY TO SPECIES OF PSILOCORSIS BASED PRIMARILY ON 

 MALE GENITALIA 



1."^ First abdominal segment with hair pencil 2 



^First abdominal segment without hair pencil 3 



2. Vescica armed with one large cornutus and a patch of smaller 



ones (fig. 133) obsoletella (Zeller) (p. 209) 



Vesica armed only with a patch of small cornuti (fig. 59a) 



quercicella Clemens (p. 207) 



3. Base of large cornutus broad, strongly sclerotized; the cornutus 



short, stout, curved (figs. 131, 134) 4 



Base of large cornutus not appreciably broadened and weakly 

 sclerotized; the cornutus straight, nearly as long as distal 

 width of aedeagus (fig. 132) caryae, new species (p. 215) 



4. Vinculum broad ventrally faginella (Chambers) (p. 213) 



Vinculum narrow ventrally reflexella Clemens (p. 212) 



*<>Meyrick, in Wytsman, Genera insectorum, fasc. 180, pp. 195-196, 1922. 



« In this couplet dubitatella (Zeller) and cryptolechieUa (Chambers) should be included, but they have 

 been omitted because of the lack of information concerning them. 



