270a (268b). Abdomen covered by first two dorsal plates (or seemingly covered by single

plate); prepectus often fused with side panel of pronotum (Fig.A), if prepectus clearly

separated than face with discernible supraclypeal area and strong mandibles only 2-

toothed (Fig.A); prescutal sutures always complete; body short and squat; head with well defined

clypeus and at least 1 mandible with 2 teeth; body metallic to black, thorax mostly with coarse hairy

pits (Figs.B-C)......................……………………........ Hymenoptera.........Perilampidae (Subfamilies:….. 271)

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A B C

270b. Abdomen with 3 or more readily visible dorsal plates; body usually elongated; head

variable but usually with inconspicuous clypeus and small mandibles with 3-4 teeth;

either prescutal sutures incomplete or antenna with 13 segments (Figs.A-B)

.......................................................................... Hymenoptera...........Pteromalidae...(Subfamilies 272 & 294)

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A B