| 1 |
Antennomeres 9-11 elongated, 8 clearly shorter and narrower than 9 |
2
|
| – |
Antennomeres 9-11 not enlarged, 8 about as long and wide as 9 |
3
|
| 2 |
Antennomeres 9-11 serrate or pectinate in males, females larger than 15 mm |
Phlegon
|
| – |
Antennomeres 9-11 neither serrate nor pectinate, females smaller than 15 mm |
Ceratogonys
|
| 3 |
Hypomera with basally closed lateral antennal grooves forming deep basal pockets for reception of antennae (Fig. 1), male protarsomere 1 without a sex comb |
4
|
| – |
Hypomera either simple (Fig. 2), or with notosternal antennal grooves (Fig. 3), or with basally open evenly deep lateral antennal grooves (Fig. 4) in which case the male protarsomere 1 has a basal sex comb (Fig. 5) |
7
|
| 4 |
Clypeus very wide and short, distance between the antennal insertion points 6-10 times the distance from the lower edge of the antennal insertion point to the edge |
Bossionus
|
| – |
Clypeus much narrower, the width at most 4.5 times the height |
5
|
| 5 |
Hypomera with pit-like hairy excretory organs (Fig. 6) |
Idiotarsus
|
| – |
Hypomera without such structures |
6
|
| 6 |
Head simple, frons and clypeus without keels |
Entomosatopus
|
| – |
Frons and/or clypeus with sharp keels |
Dyscharachthis
|
| 7 |
Lateral pronotal ridge minutely serrate (Fig. 7), hypomera usually with notosternal antennal grooves (Fig. 3), male protarsomere 1 usually with an apical sex comb (Fig. 8) |
8
|
| – |
Lateral pronotal ridge smooth |
15
|
| 8 |
Elytral suture forming a beak before the apex in lateral view (Fig. 9) |
Arrhipis
|
| – |
Elytral apex evenly curved to end in lateral view |
9
|
| 9 |
Combined length of antennomeres 2 and 3 less than the length of 4 |
Entomophthalmus
|
| – |
Combined length of antennomeres 2 and 3 always distinctly greater than the length of 4 |
10
|
| 10 |
Metacoxal plates approximately parallel-sided (Fig. 10) |
11
|
| – |
Metacoxal plates distinctly wider close to the insertion point of the trochanter than on the sides (Fig. 11) |
14
|
| 11 |
Antennal grooves parallel-sided, always well defined, body parallel-sided, antennae feebly serrate, often elongated |
Rhagomicrus
|
| – |
Antennal grooves either entirely absent or widening caudad, poorly delimited |
12
|
| 12 |
Antennomeres dentate, body uniformly yellow |
Adelorhagus
|
| – |
Antennomeres 4-10 serrate or pectinate, dorsum dark or bicoloured |
13
|
| 13 |
Pronotum unusually large compared to the rest of the body, body front-heavy in appearance, pronotum black, elytra sometimes with pale spots |
Adelothyreus
|
| – |
Dorsum black, pronotum and elytral longitudinal stripes yellow |
Weyrauchiella
|
| 14 |
Width of the frons between antennal sockets less than half the distance between the eyes, usually distinctly less, body usually black or dark brown, male protarsomere 1 with an apical sex comb |
Microrhagus
|
| – |
Width of the frons between antennal sockets at least half the distance between the eyes, usually distinctly more, body evenly yellowish brown, male protarsomere 1 without any spine comb |
Golbachia
|
| 15 |
Hypomera without medially defined antennal grooves (Fig. 2) |
16
|
| – |
Hypomera with medially sharply defined basally open lateral antennal grooves (Fig. 4) |
21
|
| 16 |
Mandibles slender |
Monrosina
|
| – |
Mandibles stout with a secondary basal tooth |
17
|
| 17 |
Meso- and metatibiae without spine combs on lateral surfaces, male protarsomere 1 simple |
18
|
| – |
Meso- and metatibiae with spine combs, male protarsomere 1 with a basal sex comb (Fig. 5) |
19
|
| 18 |
Antennomeres 3-10 deeply serrate or flabellate |
Calyptocerus
|
| – |
Antennomeres 3-10 tubular, neither serrate nor flabellate |
Paraxylophilus
|
| 19 |
Frons usually conspicuously flattened, antennomeres 6-10 slightly enlarged and flattened, 6 always longer and usually wider than 5, 3-10 not serrate |
Nematodes
|
| – |
Frons convex, antennomere 5 usually similar in size to 6, antennomeres 3-10 dentate, serrate or tubular, protibiae with simple apexes |
20
|
| 20 |
Dorsum shiny or very shiny, at most densely punctate, brownish |
Plesiofornax
|
| – |
Dorsum extremely dull, very densely and strongly rugose, black |
Gagatellus
|
| 21 |
Elytral epipleura grooved, smooth and shiny basally |
Serrifornax
|
| – |
Elytral epipleura even, not grooved in front |
22
|
| 22 |
Abdominal tip excavated, bifid |
Maelodrus
|
| – |
Abdominal tip pointed or rounded |
23
|
| 23 |
Antennal grooves large in volume, wider than rest of hypomera |
Macraulacus
|
| – |
Antennal grooves much narrower than rest of hypomera (Fig. 4) |
24
|
| 24 |
Elytra with sharply marked, punctate striae (Fig. 12) parallel-sided in shape |
Heterotaxis
|
| – |
Elytral striae faint, never punctate, elytra rarely parallel-sided in shape |
25
|
| 25 |
Claws with basal teeth |
Fornax
|
| – |
Claws simple |
Dromaeolus
|