pepsinae: tribe macromerini 191 



10. Clypeus with a small blunt median apical tooth, or sometimes the tooth 



absent; apical hairless margin of clypeus very narrow and indistinct or 

 subobsolete; mesopleuron without a trace of an oblique carina extending 

 downward from the front end of its transverse suture, subspecies of 



OBSCURA 11 



Clypeus without a median apical tooth; apical hairless margin of clypeus 

 distinct, of appreciable width and set off from the rest of the clypeus by a 

 small groove; mesopleuron often with a short oblique carina extending 

 downward from the front end of its transverse suture 12 



11. Legs entirely black 6a. obscura obscura Banks 



Legs and basal part of abdomen more or less marked or tinged with light 



rufous 6b. obscura delicata Banks 



12. Third cubital cell about 1.45 as long as high, receiving the second recurrent 



vein a little beyond its middle; mesopleuron with or without a very short 

 oblique carina at the front end of its transverse suture. 



7. euphorbiae Viereck 



Third cubital cell about 1.8 as long as high, receiving the second recurrent 



vein at or a little before its middle; mesopleuron with a short or relatively 



long oblique carina at the front end of its transverse suture 13 



13. Temple with about 8 suberect long white hairs; clypeus about 0.52 as long on 



the midline as it is wide, its apical margin usually with a broad, weak, 

 median notch; abdomen without a bluish tinge . . 8. vogeli, new species 

 Temple with about 30 suberect long white hairs; clypeus about 0.56 as long 

 on the midline as it is wide, its apical margin without a median notch; 

 abdomen with a tinge of bluish iridescence .... 9. cupida (Cresson) 



FEMALES 



(Females of mintaka and negleda are unknown ; it is expected that the 

 former will run to couplet 6 and the latter to couplet 9.) 



1. Brush on inner side of hind tibia usually with a complete subapical interrup- 



tion; mesopleuron with a short oblique carina extending downward from 

 the front end of its transverse suture; coloration of head and body en- 

 tirely fulvo-ferruginous. accepta group 2 



Brush on inner side of hind tibia usually continuous to the apex, though often 

 very much narrowed or even interrupted subapically, in the latter case the 

 mesopleuron without an oblique carina extending downward from the 

 front end of its transverse suture; coloration of head and body various . 4 



2. Forewing rather uniformly brown, though usually with three weakly distin- 



guished darker cross-bands (pi. 2, fig. 34) 16. blaisdelli (Fox) 



Forewing subhyaline, v/ith distinct brown cross-bands (pi. 2, figs. 32, 33) . 3 



3. Apical hairless margin of clypeus abruptly widened at the middle so that it 



has a blunt median tooth; clypeus only weakly impressed sublaterally so 

 that the central half of its apical margin is not distinctly set off from the 



lateral portions 15. conflicta Banks 



Apical hairless margin of clypeus not widened at the middle, without a 

 median tooth and often its apical edge weakly concave medially; clypeus 

 rather strongly impressed sublaterally so that the central half of its apical 

 margin is distinctly set off from its lateral portions. 17. accepta (Cresson) 



