1. Wings
absent (A); T1 fused with T2 and S1 fused with S2, with no evident
sulcus (A, B); frons with a transverse furrow above torulus …Parabaeus
– Wings
fully developed (a) extending to at least T2 (b); T1 separated from
T2 and S1 from S2 by a sulcus (b), sulcus sometimes partly obscured
by dense pilosity (b); frons above torulus without transverse furrow
…2
2. Spur of
fore tibia combed (pts) (Isolia species-group) …3
– Spur of
fore tibia without comb …6
3.
Pronotum with medial longitudinal sulcus (pms) (A); sternite 2 with
long setae (B) …Sceliotrachelus
– Pronotum without medial sulcus (a); S2 glabrous (b) …4
4. Fore
wings and microtrichia distinctly bicolored, giving the appearance
of patches or stripes …Pulchrisolia
– Fore
wings and microtrichia not bicolored …5
5. Fore
wing with tubular submarginal vein (A); admedian depressions (adm)
present, may be weak (A); transepisternal line present (tel) (B) ...Afrisolia
– Fore
wing without veins (a); admedian depressions absent (a);
transepisternal line absent (b) …Isolia
6. Fore
wing with rudimentary submarginal vein, only sclerotized for about
half its length (A); OOL usually subequal to or longer than LOL (B);
body usually short and squat …Amitus
– Fore
wing with submarginal vein fully sclerotized, ending in knob (a, b);
OOL always distinctly shorter than LOL; body usually elongate,
spindle-like …7
7.
Propodeum medially with single keel (A); metasomal depression not
visible; notauli absent (A); scutoscutellar sulcus foveolate (A);
anterior T2 with a transverse line of foveae; in females, ventral
A8–A9 projecting distally; male antenna with long setae; submarginal
vein of fore wing distinctly surpassing basal 0.33 of wing (B) …Allotropa
–
Propodeum with H-shaped foamy structure (a); metasomal depression
delimited by lateral propodeal carinae; notauli usually abbreviated,
triangular (a), absent in a few species; scutoscutellar sulcus
simple (a); anterior T2 with two pits, without a line of foveae;
antennae variable, but not as above; submarginal vein of fore wing
reaching at most to basal 0.33 of wing (b) …Fidiobia
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