4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Key to Species of Thioscelis 



BASED ON MACULATION 



1. Hindwing ochreous shaded with gray 2 



Hindwing dark brown to black 4 



2. Forewing with subterrainal line a series of black dots; with two black spots at 



apex 3 



Forewing with subterminal line a solid black line; without spots at apex. 



T. lipara, new species 



3. Forewing with subterminal line with strong outward arch. 



T. directrix Meyrick 

 Forewing with subterminal line with only a slight outward arch. 



T. whalleyi, new species 



4. Forewing light brown; subterminal line a solid black line. 



T. geranomorpha Meyrick 

 Forewing dark brown; subterminal line a faint series of black dots. 



T. fuscata, new species 



BASED ON MALE GENITALIA 



1. Ampulla rounded at apex; apex of gnathos slender 3 



Ampulla acute at apex, falciform; apex of gnathos broad. 



T. lipara, new species 



2. Harpe with apical region longer than ampulla 4 



Harpe with apical region equal or slightly longer than ampulla; ampulla 



large, clublike with tendency for slight counterclockwise twist at apical 

 half T. directrix Meyrick 



3. Ampulla slender, digitate T. fuscata, new species 



Ampulla broad, expanded basally T. whalleyi, new species 



Thioscelis directrix Meyrick 



Figures 1, 2, 5, 6; Plate 1 (Fig. 1); Map 1 

 Thioscelis directrix Meyrick, 1909, p. 30. 



Alar expanse 54-63 mm. 



Antenna dark brown. Head light brown; second segment of labial 

 palpus black externally on basal half, apical segment dark brown 

 anteriorly. Legs light brown, femora white, midtibia white, yellow 

 above toward base, hind tibia yellow orange dorsally, white ventrally, 

 separated by a dark brown lateral line, mid- and hind tarsi dark brown 

 to black. Thorax light brown dorsally, white ventrally. Abdomen 

 yellow dorsally, white ventrally. Forewing light brown, paler and 

 whitish tinged at base of costa; costal edge ochreous basally, dark 

 brown beyond ; an area of ill-defined black spots on median third near 

 costa; outwardly curving transverse subterminal line of black dots 

 from costa to dorsum; two ill-defined black spots at apex; a terminal 

 line of black dots from apex to dorsum. Cilia ochreous, shaded with 

 brown from midtermen to apex. Hindwing ochreous heavily over- 

 layed with gray. Cilia ochreous tinged with yellow orange. 



Male genitalia (slide WDD 3661): Uncus slightly recurved, some- 

 what concave ventrally, apex variable, generally with slight notch but 



