THE TRIBE CHALCIDINI — BUEKS 245 



KEY TO SPECIES OF CHALCIS 



1. Female, hypopygium exserted (fig. 13, f, g), antennal scape 



slender 2 



Male, ninth sternite emarginate (fig. 14, o-fif), antennal scape 



broadened 10 



2. Metafemur with outer basal tooth much larger and longer than 



following teeth (fig. 11, ;) 3 



Metafemur with outer basal tooth little if any larger than 



following teeth (fig. 11, i) 5 



8. Dorsum of thorax entirely black megalomis (p. 250) 



Dorsum of thorax with yellow markings 4 



4. Dorsum of pronotum with a yellow band extending completely 



across posterior margin; body sparsely setose divisa (p. 246) 



Dorsum of pronotum with two yellow spots near lateral mar- 

 gins; body densely covered with long, white setae lasia (p. 248) 



5. Apex of hypopygium isolated from eighth tergite (fig. 13, g) 6 



Apex of hypopygium not isolated from eighth tergite (fig. 13, f) 8 



6. Inner tooth of metafemur lacking flebilis (p. 254) 



Inner tooth of metafemur present, large, acute 7 



7. Petiole conspicuously rugose over entire surface ; outer surface 



of metafemur brown or black with yeUow or tan markings, neptis (p. 251) 

 Petiole reticulated only near base ; outer surface of metafemur 



uniformly brown barbara (p. 255) 



8. Dorsal surface of petiole densely covered by short, irregular 



carinae canadensis (p. 258) 



Dorsal surface of petiole glabrous, or nearly so ; carinae, if pres- 

 ent, located only laterad on petiole 9 



9. Petiole with lateral carinae ; mesotibia with strong apical spur. 



microgaster (p. 259) 

 Petiole without lateral carinae ; mesotibial spur extremely 

 minute phoenicapoda (p. 257) 



10. Petiole yellow 11 



Petiole brown or black 12 



11. Setae of body short; posterior carina of head extended dorsad 



only one-half distance from base of mandible to dorsal angle 



of head (fig. 7, h) divisa (p. 246) 



Body densely covered with conspicuous, long, white setae ; pos- 

 terior carina of head extended to dorsal angle of head (fig. 

 7, i) lasia (p. 248) 



12. Petiole conspicuously rugose, ventral surface with a strong 



longitudinal, mesal carina neptis (p. 251) 



Petiole without a mesal carina on ventral surface 13 



13. Inner tooth of metafemur large, acute ; f rontogenal suture 



strongly angled barbara (p. 255) 



Inner tooth of metafemur minute and obscure or lacking en- 

 tirely; frontogenal suture straight or lacking 14 



14. Antennal scape spatulate (fig. 8, d) flebilis (p. 254) 



Antennal scape not spatulate 15 



15. Antennal scape expanded near base (fig. 8, f) canadensis (p. 258) 



Antennal scape nearly uniform in width throughout (fig. 8, g). 



microgaster (p. 259) 



