15a (14b). Body quite hard, wasplike insects; clypeus not elongated; the
abdomen often
constricted at
base, 1st abdominal segment fused to thorax; fore wings distinctly larger
than hind wings and with fewer veins; front wings
with 20 or less cells (Figs.A-G)
[sawflies, bees and
wasps]..............................................................................Hymenoptera……...118
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A B C D
E F
15b. Body soft, not wasplike, the abdomen not constricted at base;
hind wings about the same
size as front wings and usually with about as many veins;
front wings frequently with more
than 20
cells.............................................................................................................…..........
16