298 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



ductus bursae often with minute spines; seventh sternum often mod- 

 ified around ostium bursae, sometimes with patches of broad scales. 



The various types of male genitalia at first seem to be unrelated; 

 however, by starting with Aeaea ostryaeella as a model, it is possible 

 to derive the others by reduction or by twisting of parts. Venational 

 differences are very sUght or nonexistent, and they are not correlated 

 with the genitalic types. Also, the habitus of each is very similar 

 to that of the others. Aeaeaextensa, the type-species of ^wawro^rawma, 

 has asymmetrical and twisted male genitalia. When I knew only 

 A. ostryaeella and A. extensa, the two were sufficiently distinct to 

 be considered as separate genera, but the evidence presented by the 

 other species indicates that they are congeneric. 



I have not been able to associate the sexes in several instances, with 

 the result that names are applied to the males and letters to the 

 unassociated females. There are 12 males and 13 females, but no 

 female of the eastern species A. venifica is known; thus, two of the 

 females from the Southwest represent undcscribed species. Until the 

 sexes are correlated, it seems reasonable to withhold naming species 

 on the basis of the female sex. The species for which the sexes have 

 been correlated are A. victor, new species, A. ostryaeella, A. rhynchosiae, 

 new species, A. dvlcedo, new species, A. extensa, A. quadricustatella, 

 and A. stipator, new species. Of these, the first three were associated 

 on the basis of specimens reared from the same food plant at the same 

 time ; the others were associated on the basis of locality. It is possible 

 that some of the latter are not correct. 



Venation does not seem to offer a criterion for separating all the 

 species. A. extensa has 3 and 4 of the fore wing stalked, a condition 

 which does not occur elsewhere. In one instance a male and a female 

 have the same venation; however, the maculation of the two sexes 

 is quite distinct. It is possible that some of the species are sexually 

 dimorphic. 



An attempt to wi-ite a key based on maculation was made, but 

 it was not satisfactory because variation of the maculation within 

 a species, as defined by genitalic characters, is greater than the 

 supposed differences used in the key. 



Key to North American Species of Aeaea 



MALES 



1. Uncus simple 2 



Uncus bifurcate 10 



2. Valva simple A. dulcedo, new species 



Valva bifurcate at apex or divided into lobes 3 



