34 Journal New York Entomological Society. [VoL xi 



3. Apterous 5 



Winged. 



Wings pubescent with cilia 4 



Wings bare, wiihout cilia, glabruus Trichosteresis Fors/e;- 



(type Ceraphron [;iabra Li(^HE^t. ). 



4. Eyes usually bare; mesonotum not narrowed anteriorly Lygocerus Forster 



(type Cerapkron raiuirornis BOHEM. ). 



Eyes pubescent ; mesonotum narrowed anteriorly iVlegaspilus Wesiwood 



(type Ceraphron abdoiiiinalis BoHEM. ). 



5. Thorax not much narrowed ; maxillary palpi 5-jointed, labials 3-jointed. 



Megaspilus U'est-u'. 

 Thorax much narrowed ; mamillary palpi 4 jointed, labials 2-jointcd. 



EumegaspiluS Ashmead (type E. eryihrotliorax AsHM. 1. 



6. Mesonotum without impressed lines 8 



Mesonotum with one or two impressed lines. 



Mesonotum with one impressed line down the center 7 



Mesonotum with two impressed lines Dichognus Tliomson 



(type D. tiiiiiidialus Thoms. ). 



7. Eyes small ; ocelli wanting. Apterous Lagynodes Forster 



[ type CerapIivMi pullidus Bohe.m. ). 



Eyes large ; ocelli present. Winged Atritomus /-drsfer 



(type A. couopfui^us FcERST. ). 



8. Eyes large, bare; ocelli distinct Atritomus /'(".f/er 



Unknown ? Dendrocerus Ru/zeding 



9. Mesonotum with three impressed lines 10 



Mesonotum without impressed lines or with one or two impressed lines 13 



10. Metathorax normal without a forked .spine at base Ii 



Metathorax with a forked spine at base Habropelte T/iomson 



11. Wings pubescent, with cilia 12 



Wings bare, glabrous, without cilia Trichosteresis F'drstti 



Apterous. Antenna filiform EumegaspiluS Ashmead 



12. Antennte dentate or ramose Lygocerus Fors/er 



Antennre filiform, simple, not dentate Megaspilus ll't'stiooud 



13. Mesonotum wiihout an impressed line 14 



Mesonotum with one or two impressed lines. 



Mesonotum with two impressed lines Dichogmus T/iomson 



Mesonotum with one impressed line Atritomus Forster 



14. Antenna toothed or serrate Atritomus Forster 



AntennK with five long branches, a branch on each of the first five flagellar joints. 



Dendrocerus Kcitzlmrg (type D. Hchtenstcini Raizeb). 



Subfamily II. CERAPHRONIN^. 



The species falling in this subfamily are distinguished by antennal 

 characters, the males having more joints in the antennae then the 

 females, and by the linear, never stigmated, marginal vein. 



