NO. 3533 CHALCID WASPS OF GENUS EURYTOMA — BUGBEE 443 



9. Length of sixth abdominal tergum dorsally, approximately equal to length 

 of fifth or at most V/i times length of fifth; ninth tergnm stout and as 



long or longer than eighth tergum 8. conica Provancher 



Length of sixth abdominal tergum, dorsally at least twice the length of 

 fifth; ninth tergum half or less than half the length of the eighth tergum. 



10 



10. Central carina of median furrow present in upper half onl}-; first joint of 



flagellum a third longer than second joint; stigmal club rectangular and 



large 9. magdalidis Ashmead 



Central carina of median furrow extends to base of furrow; first joint of 

 flagellum only a sixth longer than second; stigmal club narrowly rectan- 

 gular, appearing as slight enlargment of stigmal vein. 



10. inornata Bugbee 



11. Propodeum sloping; narrowly concave with a narrow and deep median 



furrow; abdomen rectangular, very slightly compressed 12 



Propodeum vertical or abrupt; concavity wide; median furrow wide, nar- 

 row or absent; abdomen not as above 13 



12. LTmbilicate punctures reduced on head and thorax, verj^ shallow and deli- 



cate; abdomen with sixth segment longer than fifth dorsally. 



11. minnesota Girault 

 Umbilicate punctures not reduced, sharp and deep; abdomen with sixth 

 segment not much longer than fifth dorsally; marginal about twice the 

 length of the postmarginal; antenna with distinct club. 



12. illinoisensis Girault 



13. Petiole about one-half the length of hindcoxa; marginal vein broad, but not 



heavily chitinized 13. sphaera, new species 



Petiole one-half or less the length of hindcoxa; marginal vein linear; stigmal 

 club rectangular 14. obtusilobae Ashmead 



Group B. Brevipetiolata 



Complex L Bicolor 



1. Postmarginal vein one-half or less the length of the marginal vein ... 2 

 Postmarginal vein more than one-half the length of the marginal vein . 3 



2. Small species averaging 1.9 mm. in length; propodeum wide and shallow; 



surface finely and evenly punctate; no median furrow; all coxae yellow; 



venter of abdomen reddish brown 15. semivena Bugbee 



Medium-sized species averaging 2.9 mm. in length; propodeum wide and 

 shallow with median furrow indicated by lateral cariuae in upper half to 

 two-thirds of length; hindcoxa often black on outer and anterior faces. 



16. flavovultus Bugbee 



3. Abdomen and thorax black; clypeus, upper part of frons, small spot behind 



eye, and spot on anterolateral edge of pronotum, yellow. 



17. bicolor Walsh 



Abdomen and thorax mostly deep brown; orange-yellow color on face, lateral 



aspect of pronotum, legs, and often coxae 4 



4. IMedium-sized species averaging 3.3 mm. in length; antenna distinctly clav- 



ate with a long and narrow first funicle joint, clearly longer than the ped- 

 icle 18. lutea, new species 



Small species averaging 2.3 mm. in length; antenna filiform; first funicle 

 joint only slightly longer or equal to pedicle as seen from above. 



19. juniperinus Marcovitch 



