1 Anal cell of fore wing divided into two by a long medial constriction; clypeus not enlarged, distinctly narrower than distance between lower corners of eyes, or antennae with 5 antennomeres and nearly as long as head breadth; inner margins of eyes strongly convergent or strongly divergent downward.......................................................................................................2

– Anal cell of fore wing divided into two near the middle by a straight vein or at least touching in the middle (rarely); clypeus distinctly broader than distance between lower corners of eyes; antennae at least with 6 antennomeres (except for Pseudoclavellaria) and distinctly longer than head breadth; inner margin of eyes subparallel or slightly convergent downward Cimbicinae.............................................................................................................................................. 3

2 Inner margins of eyes strongly convergent downward; distance between antennal toruli about 2 times as long as breadth of clypeus, clypeus not separated from supraclypeal area by epistomal sulcus; anterior tentorial small and shallow; head narrowed behind eyes in dorsal view, POL longer than OCL; hind orbit with distinct occipital carina; mesonotum with notauli between mesoscutal lateral lobe and middle lobe almost obsolete; hind coxae separated, apex of tibial spur acute and sclerotized. Corynidinae..........................................Corynis Thunberg

– Inner margins of eyes strongly divergent downward; distance between antennal toruli about as long as breadth of clypeus, clypeus separated from supraclypeal area by a distinct transversal furrow; anterior tentorial large and deep; head enlarged behind eyes in dorsal view, POL much shorter than OCL; hind orbit round, without occipital carina; mesonotum with notauli between mesoscutal lateral lobe and middle lobe deep; hind coxae contiguous, apex of tibial spur blunt and membranous....................................................................................... Abiinae

3 Labrum small, clearly narrower than 1/4 breadth of clypeus; clypeus narrower than lower distance between eyes, or clypeus triangularly convex and merging with supraclypeal area.....................................................................................................................................4

– Labrum large, not narrower than 1/3 breadth of clypeus; jugum region in hind wing without crossvein; clypeus very short and much broader than lower distance between eyes, not merging with supraclypeal area..................................................................................................................7

4 Jugum region in hind wing without crossvein; ventral side of middle and hind femora with 1–2 rows of denticles, or anal cell in fore wing with a punctiform middle petiole, or head narrowed behind eyes in dorsal view...........................................................................5

– Jugum region in hind wing with a crossvein; middle and hind femora without denticle ventrally; anal cell of fore wing with a middle crossvein; head not narrowed behind eyes in dorsal view; Clypeus and supraclypeal area not entirely merging together and with a shallow depression between them; distance between antennal toruli and posterior margin of head about as long as distance between toruli and anterior margin of clypeus; postocellar area about as long as broad...............................................................................................................Cimbex Olivier.

5 Outer side of middle and hind coxae with a large denticle; ventral side of hind femur with 1-2 rows of denticles; mandibles simple, without inner tooth; malar space very long, clearly longer than antennomere 4; antennae with 8–9 antennomeres [claw simple]...Odontocimbex Malaise

– Outer side of coxae without denticle; ventral side of femora without 1–2 rows of denticles; mandibles with distinct inner tooth; malar space short, at most as long as antennomere 1, much shorter than antennomere 4; antennae with 6–7 antennomeres........................6

6 Clypeus clearly narrower than shortest distance between eyes and separated from supraclypeal area by a shallow but distinct furrow; anal cell in fore wing with a short petiole at basal third; claw simple; tibial spur stout, much shorter than apical breadth of tibia, apex obtuse; head enlarged behind eyes in dorsal view...............................................................Praia Andre

– Clypeus clearly broader than shortest distance between eyes and merging with supraclypeal area, furrow between them absent; anal cell in fore wing with a distinct crossvein at basal fourth; claw bifurcate; tibial spur slender, clearly longer than apical breadth of tibia, tapering toward apex; head narrowed behind eyes in dorsal view.........................................…................................................…Agenocimbex Rohwer

7 Ventral side of middle and hind femur with distinct denticle near apex [clypeus and labrum black; labrum narrowed toward base................….......................................Trichiosoma Leach

– Ventral side of femur without denticle.................................................................................8

8 Head and thorax with dense and long hairs; club of antennae not segmented; abdominal tergum 1 without lateral carina; tarsal pulvilli large, 1st and 2nd pulvilli nearly touching to each other, first pulvillus longer than 1/2 length of basitarsus; apical anal cell of forewing 1 to 2 times length of basal anal cell…………….…………………….......………9

– Head and thorax without dense and long hairs; club of antennae distinctly segmented; abdominal tergum 1 at least with distinct lateral carina at basal 1/2; tarsal pulvilli short and small, separated each other, distance between basal 2 pulvilli not shorter than length of a pulvillus, first pulvillus much shorter than half length of basitarsus; fore wing with apical anal cell about 3 times length of basal anal cell………..............Leptocimbex Semenov

9 Labrum broadened toward base and distinctly narrowed toward apex; antennae with 6 antennomeres; inner spur of hind tibia as long as apical breadth of tibia; abdominal terga with long hairs; fore wing with apical anal cell 2 times as long as basal anal cell, vein 2m-cu almost interstitial to vein 2r-m; clypeus and labrum black..........Labriocimbex Yan and Wei, gen. nov.

– Labrum clearly narrowed toward base and distinctly broadened toward apex; antennae with 5 antennomeres; inner spur of hind tibia clearly shorter than apical breadth of tibia; abdominal terga without long hairs; forewing with apical anal cell as long as basal anal cell, vein 2m-cu remote from vein 2r-m; clypeus and labrum white.........................…...Pseudoclavellaria Schulz