264 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



KEY TO THE SPECIES OF CARDIOCHILES OF AMERICA 

 NORTH OF MEXICO 



1. Eyes hairy 2 



Eyes bare 10 



2. Vertex and fi-ons transversely striate or wrinkled 3 



Vertex ami frons smooth 4 



y. Face with a median longitudinal carina ; apical third of forewing fuliginous, 

 the rest hyaline; about basal 0.40 of hind tibia yellowish white; hind tarsal 



claw pectinate basally ; length about 6 mm tibiator (Say) 



Face without a median longitudinal carina; forewing uniformly fuliginous; 

 hind tibia entirely blackish ; hind claw toothed basally ; length about 

 2.50 mm minutus (Cresson) 



4. Thorax at least partly ferruginous 5 



Thorax entirely black 6 



5. Thorax entirely ferruginous ; second abscissa of cubitus about 1.50 times as 



long as recurrent vein ; recuri-ent vein about one-third as long as second 

 abscissa of basal vein ; interanal vein represented by a pigmented line. 



therberiae Rohwer 



Thorax black, varied with ferruginous ; second abscissa of cubitus slightly 



shorter than recurrent vein ; recurrent vein about half as long as second 



abscissa of basal vein; interanal vein absent thoracicus (Cresson) 



6. Only apical third of forewing lightly iufumated apicalis (Cresson) 



Forewing entirely iufumated 7 



7. Third segment of hind tarsus nearly 1.50 times as long as fifth; hind tibia 



black 8 



Third and fifth segments of hind tarsus about equal ; hind tibia testaceous, 

 sometimes blackish apically 9 



8. Fore femur black, brownish yellowish apically ; fore tibia black or blackish ; 



length about 4.5 mm orizabae (Ci-esson) 



Fore femur and tibia testaceous; length about 6 mm — floridanus (Ashmead) 



9. Notaulices meeting posteriorly in an acute angle (pi. 4, fig. 9) ; mesopleural 



furrow usually smooth explorator (Say) 



Notaulices meeting posteriorly in a broad angle (pi. 4, fig. 8) ; mesopleural 

 furi'ow foveolate to anterior margin of mesopleuron. 



insculptus, new species 



10. Anterior margin of clypeus slightly notched at middle ; notaulices and 



mesosulcus smooth ; upper and lower grooves of mesopleuron smooth ; 

 metapleuron smooth and polished ; propodeum areolate, the areas smooth. 



levis, new species 

 Anterior margin of clypeus not notched; notaulices foveolate (except in 

 hrcvitarsis) ; mesosulcus foveolate; upper and lower grooves of meso- 

 pleuron usually foveolate ; metapleuron always rugose on posterior sec- 

 tion ; propodeum usually areolate and always rugose 11 



11. Apex of hind tibia expanded outwardly into a strongly flaring process (pi. 4, 



fig. 13) 12 



Apex of hind tibia often thickened but not expanded into a strongly flaring 

 process, outer edge nearly straight 20 



12. Galea nearly or quite as long as long axis of eye 13 



Galea much shorter 17 



13. Second segment of middle tarsus noticeably shorter than fifth 14 



Second segment of middle tarsus as long as fifth 16 



14. Costa and stigma yellowish ferruginous viator (Say) 



Costa and stigma dark brown or piceous 15 



