296a (295b).    Antennal sockets situated on lower margin of head (Fig.A-B), overhanging the

            mouth; antenna 1171, (= with 7 funicular segments but no ring segments); head

            prognathous (= projecting forward) or almost; abdomen on distinct petiole; marginal

            vein very long, stigmal and postmarginal veins short. ........................................……...................... 297

 

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                                       A                                    B

 

 

296b.    Sockets located at least slightly above mouth margin; antennal formula usually different

            or venation different....................................................................................……................................... .298