125a (124a). Tergite 2 longest and usually forming at least 1/2 the abdomen; radial cell open

(except in Charips) and petiole without enlarged ring bearing longitudinal striations (gall-

formers and hyperparasitoids in aphids). If radial cell is closed and petiole has striated

ring, then tergites 2 & 3 are fused into a single saddle-shaped tergite that covers entire

abdomen (Figs.A-C) (Synergus inquilines in oak galls)..............

. ...........................................( Hymenoptera) (Cynipoidea) Cynipidae [also see fly-par.htm ]

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A B C

125b. Tergite 2 clearly forming less than 1/2 of abdomen; radial cell closed; petiole with slightly

enlarged ring structure bearing longitudinal striations; mesopleura without spines or

scratches (Figs.A-B) (parasitoids of Diptera).............. (Hymenoptera)…… (Cynipoidea) Figitidae

[also see fly-par.htm ]

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A B