10a (5). Tarsi without membranous pads, or if vestiges present then antennae with fewer than 14 segments; antennae otherwise with variable number of segments, if more than 14 then fore wing with 7 or fewer enclosed cells; fore wing otherwise with 1-10 enclosed cells; fore wing with costal cell indistinct or absent, veins C, Sc, R, and Rs fused or contiguous from wing base to pterostigma; hind wing without a distinct lobe at the base (Fig. A); antennae usually with 16 or more segments (rarely with as few as 12), and with small ring-like segments (= anelli) somewhat differentiated from proximal end of 1st flagellar segment; solitary larval parasitoids...…...............…...(Ichneumonoidea) (part).........45

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10b. Fore wing with costal cell usually visible, though sometimes not bordered anteriorly by a vein, rarely when costal cell is virtually eliminated then a distinct lobe is present at the base of the hind wing; this lobe otherwise present or absent; antennae with 10-15 segments, without small anelli differentiated from proximal end of 1st flagellar segment………..................................................................................................11