190 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



Fore wing smooth; termen straight; 12 veins, all separate; 8 and 

 9 separate ; upper internal vein of cell from between 10-11 ; 3, 4, and 

 5 not approximate at termen ; 2 from cell beyond %, straight. 



Hind wing with 8 veins; 6 and 7 approximate toward base; 3 

 and 4 connate; 5 approximate to 4; termen concave below apex; in 

 male a chitinous ridge on inner margin. 



Hind tibia of male with yellow hair pencile. 



Male genitalia with harpe elongate ; broadened at base of cucuUus ; 

 outer surface unspined; cucullus short, strongly spined; spine 

 clusters Spc,^ /Spc^ strongly developed; sacculus weakly haired 

 toward base. Uncus short, broad, rounded, heavily spined beneath. 

 Socii short, flexible, hairy. Gnathos normal, a simple band with 

 weakly chitinized subanal plate. Aedoeagus fairly long, rather 

 stout, straight; cornuti absent. 



Female genitalia without signum. Ductus bursae moderately 

 long, unchitinized except at genital opening. 



A derivative of Olethreutes. Contains only the one North 

 American species. 



The position of vein 2 of fore wing would seem to place it in the 

 Phaloniidae; but the typically olethreutine genitalia forbid. This 

 is the only olethreutid as far as I know which shows such a 

 character. 



EVORA HEMIDESMA (Zeller) 

 (Figs. 55, 201, 411) 



Euchromia hemidesma Zellee, Verb. Zool.-bot. Ges. Wien, vol. 25, 1875, p. 261. 

 Olethreutes hemidesma Feenald, in Dyar List N. Amer. Lepicl., no. 5041, 



1903.— Keabfott, Can. Ent., vol. 37, 1907, p. 207.— Foebes, Memoir 68, 



Cornell Univ. Agr. Exp. Sta., 1924, p. 458. 

 Argyroploce hemidesma Baenes and McDunnough, Check List Lepid. Bor. 



Amer., no. 6856, 1917. 



A reddish brown species with narrow, darker median band on 

 fore wing; somewhat resembling dark specimens of Melissopus 

 latiffereamus Walsingham. 



Male and female genitalia figured from specimens in National 

 Collection from Cartwright, Manitoba (E. F. Heath, male) and 

 Kentucky (August Busck, August, female). 



Distribution. — Maine, New Hampshire, Massachusetts, Connecti- 

 cut, New Jersey, Pennsylvania, Virginia, Kentucky, Illinois, Iowa, 

 Manitoba, Ontario. 



