139a
(138a).    Fore wing with a marginal and
stigmal vein (Figs.A-C) (parasitoids of insect 
                       eggs)....................................................................(Hymenoptera)  (Proctotrupoidea)  Scelionidae
 
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                                       A                                                 B                                     C
 
 
139b.    Fore wing without marginal and stigmal veins (Figs.A-C) (most
parasitoids of 
Diptera & Homoptera).........................…..…......(Hymenoptera)  (Proctotrupoidea)  Platygastridae
 
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                       A                                                B                                                      C