114 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



internal vein of cell from between 10-11 ; 3, 4, and 5 not approximate 

 at termen ; 2 from cell at or beyond % but before %, straight. 



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

 4 connate ; termen concave below apex but nowhere appreciably 

 notched; in male inner margin bearing a chitinous ridge. 



Hind tibia of male with strong hair pencile from base. 



Male genitalia with harpe slender, elongate; outer surface un- 

 spined; cucullus broad toward apex, densely spined; neck long and 

 slender; sacculus not extended in an arch pocketing neck; spine 

 cluster Spc^ upon a produced lobe from sacculus, strong ; spine clus- 

 ter Spc^ not developed ; sacculus weakly spined tow^ard base. Uncus 

 developed, simple, slightly tapering, moderately chitinized; tip 

 weakly spined. Socii large, oval, flexible, strongly haired. Gnathos 

 with strongly chitinized, semitubular subanal plate. Aedoeagus mod- 

 erately long; slightly curved; with posterior blind sack; cornutus a 

 single stout spine wnth a swollen base. 



Female genitalia with two signa; latter developed as deeply im- 

 pressed scobinate patches. Ductus bursae moderately long ; wrinkled 

 behind genital opening; strongl}'^ chitinized and bent (or looped) at 

 middle. 



A compact genus equally represented in Europe and North 

 America. The genitalia, both male and female, are quite character- 

 istic. Specific differences are slight, but apparently constant. In 

 pattern most of our species are paralleled in Europe. Similar forms 

 on the two continents, however, are separable on structural charac- 

 ters. Only one species, capreana Hiibner, is common to both. 



KEY TO THE SPECIES OF APHANIA 



1. No white or wliitisb areas on fore wing 2. 



Fore wing with one or more white or whitish areas 3. 



2. Fore wing with a fine blaclt longitudinal dash on center of disk; median 



band obsolete, at least below middle ; subapical band represented only 



by two fine black lines not reaching costa (11) infida (part). 



Fore wing without black dash on disk ; median band faint but complete to 

 dorsum; apical band faint but distinguishable and reaching to costa. 



(12) removana. 



3. A longitudinal white streak from extreme base through center of wing to 



outer pale area (7) albeolana. 



(8) apateticana. 

 No such longitudinal white streak from extreme base 4. 



4. Fore wing with a pale antemedian area extending from costa to dorsum 



and completely separating a dark basal patch from median dark 



markings 5. 



Fore wing with basal two-thirds of wing very dark greyish fuscous ; no 

 antemedian pale area except occasionally a faint whitish patch 

 on costa 6. 



