44a (43). Largest segment of abdomen (in lateral view) tergites II or III, and never more than 1 short tergite preceding the large tergite (Fig. A); mostly small insects; tergite II not forming 1/2 the abdomen (Fig A); solitary endophagous larval parasitoids .................. ........................................................................................................................................................................................(Cynipoidea) - Figitidae - Figites spp.

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44b . Tergite II (or II + III fused) the largest and usually forms at least 1/2 the abdomen (Figs. A & B) ..................... (Cynipoidea) - Cynipidae .................................................................................................................................................................................[rare on synanthropic Diptera]

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