NORTH AlVIERICAN STENOMIDAE — DUCKWORTH 27 



3. Anellus with lateral lobes 4 



Anellus without lateral lobes 15 



4. Anellus with two lateral lobes 5 



Anellus \\ith four lateral lobes 11 



5. Tip of gnathos broad, notched 6 



Tip of gnathos narrow, unnotched 7 



6. Left lobe of anellus forked 1. Antaeotricha schlaegeri (Zeller) 



Left lobe of anellus simple . . 2. Antaeotricha lindseyi (Barnes and Busck) 



7. Uncus simple; lobes of anellus small, bearing setae at tips; cornuti a long mass 



of small spines 8. Antaeotricha irene (Barnes and Busck ) 



Uncus not simple; combination of characters not as above 8 



8. Aedeagus with cornuti; combination of characters not as below .... 9 

 Aedeagus without cornuti; uncus with dilated tip; lateral lobes of anellus 



upright, sharply pointed . . .11. Antaeotricha haesitans (Walsingham) 



9. Vinculum produced into dorsally projecting process in front. 



13. Antaeotricha fuscorectangiilata, new species 

 Vinculum not produced into dorsally projecting process 10 



10. Uncus with broadened tip; aedeagus flaring apically. 



4. Antaeotricha leiicillana (Zeller) 



LTncus with tip terminating in two short spines; aedeagus short, broad, 



truncate at tip 15. Antaeotricha nianzanitae Keifer 



11. Uncus distinctly notched at tip, aedeagus with cornuti a large irregular 



group of very small spines; with lateral recurved process. 



7. Antaeotricha furcata (Walsingham) 



Uncus without notched tip, aedeagus without cornuti and without lateral 



recurved process 12 



12. Gnathos divided into two lobes at tip 13 



Gnathos not divided into two lobes at tip 14 



13. Lobes on tip of gnathos blunt . . 3. Antaeotricha unipunctella (Clemens) 

 Lobes on tip of gnathos acuminate. 



14. Antaeotricha vestalis (Barnes and Busck) 



14. Lobes of anellus unequal, dorsal lobe large, laterally curved, ^ith dense, 



brushlike group of spines on inner margin of apical third; ventral lobes 

 reduced, setiferous; aedeagus without spine. 



6. Antaeotricha decorosella (Busck) 

 Lobes of anellus approximately equal in size, dorsal ones with heavy spines at 

 tip, ventral ones setiferous; aedeagus with apical spine. 



5. Antaeotricha osseella (Walsingham) 



15. Anellus V-shaped, uncus dilated at tip, not cleft. 



9. Antaeotricha humilis (Zeller) 

 Anellus not V-shaped, uncus not dilated at tip 16 



16. Uncus attenuate, cleft at tip. 



11. Antaeotricha thoniasi (Barnes and Busck) 

 Uncus truncate, not cleft at tip . . 10. Antaeotricha agrioschista (Meyrick) 



17. Harpes simple with palmate, multilobed setae on outer part of costa. 



(Genus Setiostoma Zeller) 18 



Harpes simple or compound without palmate, multilobed setae on outer part 



of costa 19 



18. Cornuti consisting of more than one large single spine. 



2. Setiostoma ferualdella Riley 

 Cornuti consisting of one large single spine. 



1. Setiostoma xanthobasis Zeller 



