180 BULLETIN 123, UNITED STATES NATIONAL MUSEUM. 



Male genitalia with harpe simple ; cucullus moderate, with spined 

 area reduced and with strong anal and lower marginal spines; sac- 

 culiis with a dense clothing of long, hairlike spines, especially toward 

 neck. Uncus absent. Socii developed; set close together near apex 

 of tegumen; strongly chitinized; elongately triangular; porrected 

 (that is, projecting caudally or at right angles from tegumen). 

 Gnathos weak; greatly restricted and partially fused with socii. 

 Aedoeagus long, stout, tapering; supporting arm of annellus slender 

 and long with stout articulation to aedoeagus; cornuti a cluster of 

 elongate spines. 



KEY TO THE SPECIES OF GRETCHENA. 



1. Fore wing with ocelloid spot wliite and sharply contrasted against ground 



color 2 



Fore wing without ocellus, or with ocelloid patch not white or sharply con- 

 trasted against ground color 3 



2. Dark ground color of fore wing shading to ferruginous brown toward apex. 



(4) dulciana. 



Dark ground color blackish fuscous without admixture of ferruginous 



brown (3) watchungana. 



3. Dark and pale areas of fore wing fusing; no sharply defined black scaling 



or other markings in apical third ; no indication of an ocellus or any 



whitish streak in cilia below apex (8) blangulana. 



Fore wing with dark and pale shadings contrasted ; ocelloid patch at least 

 indicated ; cilia with a whitish dash below apex 4 



4. Fore wing with no crescent or blotch of contrasting scaling above ocelloid 



patch . (2) concubitana. 



Fore wing with crescent or blotch of black scaling above ocelloid patch 5 



5. Ground color and major part of fore wing very pale ashy gray 7 



Ground color dark gray or, if pale, with the dark scaling occupying major 



portion of wing 6 



6. Subcostal area of fore wing suffused with dark scaling; basal patch com- 



plete (6) amatana. 



Subcostal area pale to base, obliterating basal patch above cell. 



(7) delicatana. 



7. Black scaling above ocellus fusing with a black dash at apex and a black 



streak along upper outer margin of cell, forming a continuous wavy black 



line (5) 'bolliana. 



Black line above ocellus curving down to lower middle of wing, not fusing 

 with the black streak on upper outer margin of cell (1) deludana, 



1. GRETCHENA DELUDANA (Clemens). 



(Figs. 14, 31, 317.) 



Hedya deludana Clemens, Proc. Ent. Soc. Phila., vol. 3, 1864, p. 513. 

 Proteopteryx deludana Feenald, in Dyar List N. Amer. Lepid., no. 5213. — 



Barnes and McDunnough, Check List Lepid. Bor. Amer., no. 7116, 1917. 

 Steganoptyclia diludana Keaefott, Journ. N. Y. Ent. Soc, vol. 16, 1908, p. 173. 



In our economic literature this insect has been often recorded as 

 a pecan feeder on account of its confusion with Gretchena hoUiana 

 Slingerland. Its northern distribution, however, would seem, to 



