NO. 2349. REVISION OF NEARCTIC APANTELES—MUESEBECK. 48& 



18. Oviposit(jr very strongly decurvecl at apex; lateral membranous margins 



along first abdominal tergite black; posterior femora deep black in 



botli sexes 15. thurbcriae, new species. 



Ovipositor but slightly decurved at apex; lateral membranous margins 

 along the first abdominal tergite dark testaceous; posterior femora 

 reddish-testaceous in female, blackish in male IG. megathymi Riley. 



19. Posterior femora black; wings white with clear stigma__17. harti Viereck. 

 Posterior femora mostly testaceous ; wings hyaline with brown stigma — 20. 



20. Ovipositor sheaths half as long as the abdomen ; nervellus curved behind 



toward base of wing; posterior femora and tibiae wholly testaceous. 



18. phthorimaeae, new species. 



Ovipositor sheaths as long as the abdomen ; nervellus not curved ; posterior 



femora blackish on apical third 19. acrobasidis, new species. 



21. Posterior coxae entirely or mostly pale ; abdomen often with more or less 



of the third and following tei-gites testaceous ; sometimes the basal seg- 

 ments of antennal flagellum yellow 22. 



Posterior coxae black ; abdomen black above ; antennal fiagellum uni- 

 colorous, black or brown 25. 



22. Second abdominal tergite roughened and dull ; mesoscutum and disk of 



scutellum coarsely punctate and dull; basal segments of anteuTial 



flagellum yellow 20. ensiger (Say); also 21. nmigretorum Viereck. 



Second abdominal tergite smooth and polished 2.3. 



23. Disk of scutellum very flat, wholly impunctate an dhighly polished ; third 



abdominal tei-gite more or less testaceous laterally; ovipositor sheaths 



about half as long as the abdomen 22. xanthopus (Ashmead). 



Disk of scutellum somewhat punctured 24. 



24. Abdomen entirely black above, dark fuscous beneath. 



23. Icueopus (Ashmead). 



Abdomen witli more or less reddish-yellow on the dorsal tergites; venter 



of abdomen largely pale 24. pinos (Cresson). 



25. Abdomen long and very slender, strongly compressed; first and second 



abdominal tergites finely ruguloso-striate ; ovipositor sheaths exceed- 

 ingly slender and a little longer than the abdomen ; hind femoi-a black, 



at least black along the upper and lower edges 26. 



Abdomen not so slender ; otherwise not combining all the above char- 

 acters 27. 



26. Propodeum finely rngulose and dull; the areola sharply margined; posterior 



femora entirely black 25. betheli Viereck. 



Propodeum punctate and shining; the areola not strongly circumscribed 



by carinae; posterior femora black only along the edges 



26. californicus, new species. 



27. Tegulae yellowish 28. 



Tegulae black 43. 



28. Propodeum with areola strongly margined by prominent carinae, and wHh 



distinct costulae ; second abdominal tergite sometimes entirely smooth 



and highly polished 29. 



Propodeum without costulae; second abdominal tei-gite never smooth and 

 highly polished 39. 



29. Second abdominal tergite entirely smooth and polished ; hind femora 



always yellowish or testaceous 30.. 



Second abdominal tergite rugulose, at least posteriorly ; if practically en- 

 tirely smooth and polished the hind femora are blacki.sh 36. 



