255a (254b). Abdominal petiole with distinct 2 segments and very thin; fore wing reticulate (=

net-like); both fore and hind wings narrow at base into a linear stalk (Fig.A); mandibles

with teeth exodont (extended outwards); antennal sockets closer to eyes than to each

other (rare in North American collections)......................................................Mymerommatidae

 

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A

255b. Abdominal petiole with 1 segment or none; fore wing membrane smooth, hind wing

membrane not reaching base, but reduced to a linear stalk formed by submarginal vein

(Fig.A); frons with H-shaped impressed lines (Fig.A ); antennal sockets much closer to

eyes than to each other; egg parasites (common in North American collections)..............

(Figs.B-H).......................................................................................................................Mymaridae

 

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A B C

 

D E F G