336 U. S. NATIONAL MUSEUM BULLETIN 216 part 3 



12. Vertical portion of epomia incomplete or very weak; temple at its upper 



0.3 flat or faintly convex; hind femur black . 17. atrorvibens, new species 

 Vertical portion of epomia strong and complete, together with the dorsal 

 part of epomia forming approximately a half circle; temple at its upper 0.3 

 more or less concave; hind femur ferruginous or black. 



18. reflexa, new species 



13. Tergites 2 and 3 brown, their apical margins ferruginous. 



10. fiiscata, new species 

 Tergites 2 and 3 entirely ferruginous 14 



14. Tergite 6 ferruginous, rarely more or less black 15 



Tergite 6 black, rarelj' more or less ferruginous 16 



15. Segments 2-4 of hind tarsus and segments 3-4 of maxillary palpus white. 



lb. montivaga austrina, new subspecies 



Segments 2-4 of hind tarsus and segments 3-4 of maxillary palpus medium 



brown to fuscous 16. depilis, new species 



16. Apical 0.3 or more of first sternite bordered on each side by a longitudinal 



carina that projects weakly ventrad (this carina represents the lower edge 

 of the tergite) ; punctures on head and body very dense. 



11. albitarsis (Cresson) 

 Apical 0.2 or less of first sternite bordered on each side by a ventrally pro- 

 jecting carina, or not at all bordered; punctures on head and thorax less 

 dense 17 



17. Punctures on cheek separated by about their diameter; clypeus moderately 



convex 3. nigripes, new species 



Punctures on cheek crowded, separated by much less than their diameter; 

 clypeus strongly convex 18 



18. Clypeus about 0.83 as wide as face 9. latidens, new species 



Clypeus about 0.7 as wide as face 19 



19. Cheek with dense, coarse punctures but without distinct transverse wrinkles; 



tergites 3 and 4 more or less infuscate 5. apicalis, new species 



Cheek with dense, coarse punctures that are partly obscured by weak hori- 

 zontal wrinkling; tergites 3 and 4 entirely ferruginous 20 



20. Front wing about 6.6 mm. long; notaulus moderately strong. 



7. sanderi (Dalla Torre) 

 Front wing 3.7 to 5.6 mm. long; notaulus rather weak. 



8. semirubra Townes 

 FEMALES 



(T. sanderi is not included. It will key to couplet 18. The only specimen known 



lacks antennae.) 



1. The short carina on prepectus that is opposite or just below lower corner of 



pronotum much higher near the middle than at ends so that in profile it 

 appears subcrescentic; subapical part of lower valve of ovipositor with a 

 finely wrinkled surface; fourth tergite entirelj^ or mostly black ... 2 

 The short carina on prepectus that is opposite or just below lower corner of 

 pronotum of rather even height through most of its length, in profile not 

 subcrescentic (the carina sometimes absent) ; subapical part of lower valve 

 of ovipositor entirely smooth or with a short preapical wrinkled section; 

 fourth tergite usually ferruginous but sometimes black or partly black . 3 



2. Segments 2-4 of hind tarsus white or pale yellow; nervellus broken near its 



upper 0.45; first tergite in side view not distinctly wrinkled between spiracle 

 and base, or less distinctly wrinkled than in anagmus. 



19. cyperia, new species 



