100 BULLETIN 132, UNITED STATES NATIONAL MUSEUM 



5. Genus ENDOTHENIA Stephens 

 (Fig. 48) 



Endothenia Stesphens, List Brit. Animals, pt. 10, Lepid., 1852, p. 28. 



Genotype. — Tortrix gentianana Hiibner (Europe). 

 Orthotaenia Stainton (not Stephens), Man. Brit. Butterflies, and Moths, 

 vol. 2, 1859, pp. 260, 262. 



Genotype.— Tortrix antiquana Hiibner (Europe). 



Thorax with posterior tuft. 



Fore wing smooth; termen straight or slightly convex; 12 veins; 

 all separate; 7 to termen; 8 and 9 approximate at base; upper in- 

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

 at termen; 2 from cell before %, straight. 



Hind wing with 8 veins; 6 and 7 stalked; 3 and 4 connate; 5 

 remote from 4 at base; in male with or without chitinous ridge on 

 inner margin. 



Hind tibia of male with or without hair pencile. 



Male genitalia with harpe slender and broadening considerably 

 toward base; outer surface unspined; cucullus narrow, elongate; 

 saccullus weakly spined toward base; spine cluster Spc'^ upon a 

 raised prominence projecting toward costa; spine cluster Spc^ not 

 developed. Uncus long, stout, curved; tip spatulate and strongly 

 spined above and beneath. Socii reduced (fusing with tegumen 

 and defined chiefly by hairy tufting); scarcely flexible; strongly 

 haired. Gnathos absent, or represented only by a pair of weakly 

 chitinized lateral arms branching from well back on tegumen and 

 connecting with anellus. Aedoeagus short, stout, usually as broad 

 as long; penis with or without cornuti, latter when present an irreg- 

 ular cluster of several stout, moderately long spines. 



Female genitalia with single signum; latter developed as a squa- 

 mous sack. Ductus bursae moderately long; chitinized only toward 

 genital opening. 



A genus easily recognized by its characteristic male genitalia. 

 The hind wing venation (5 remote from and nearly parallel with 4) 

 would seem to place it in the Laspeyresiinae ; but the genitalia for- 

 bid this. In pattern and general habitus some of the species are 

 strikingly similar to those of Polychrosis. The genitalia in some 

 respects resemble very much those of Bactra., with which, however, 

 it does not appear to have any very close connection. It is most 

 closely related to Taniva., Tia^ and Ilulda^ from which it differs 

 chiefly in male genitalia and the remoteness of veins 5 from 4 in hind 

 wing. 



KEY TO THE SPECIES OF ENDOTHENIA 



1. Fore wing with a distinctly whitish post median area 2. 



Fore wing sometimes with pale post median area, but latter not white — 4. 



