| 1 |
Elytra with irregular punctation; lateral margins of pronotum broadly explanate, lateral edge sparsely denticulate |
Eronyxa
|
| - |
Elytra regularly punctate; lateral margins of pronotum narrowly explanate, lateral edge almost entirely evenly rounded or densely denticulate |
2 |
| 2 |
Antenna 7- or 9-segmented |
3 |
| - |
Antenna 11-segmented |
5 |
| 3 |
Antenna 7-segmented, club 1-segmented; mandible with mola |
Lycoptis
|
| - |
Antenna 9-segmented, club 2- or 3-segmented; mandible without mola |
4 |
| 4 |
Antennal club 2-segmented; mandible with prostheca near base of mandible formed by tuft of long setae; submental area lacking concave or depressed area; wing with oblong radial cell |
Grynocharina
|
| - |
Antennal club 3-segmented; mandible without penicillus or prostheca; submental area concave; wing with small triangular radial cell displaced downwards |
Peltonyxa
|
| 5 |
Lateral edge of pronotum densely denticulate; lacinia with one pigmented spine |
Indopeltis
|
| - |
Lateral edge of pronotum evenly rounded or at most finely undulating; lacinia with two or three pigmented spines |
6 |
| 6 |
Elytra with inconspicuous carinae; mola absent; ligula deeply emarginate; probably predatory. Larva: sensory appendix very short |
Promanus
|
| - |
Elytra with conspicuous carinae; mola or remnant of mola present; ligula deeply or weakly emarginate. Mode of life: predatory (
Trichocateres
), herbivorous (
Lophocateres
), fungivorous (
Grynocharis
). Larva (
Lophocateres
,
Grynocharis
): length of sensory appendix about half or more than half that of antennal segment 3
|
7 |
| 7 |
Elytra with six carinae; tegmen without projecting phallobasic apodeme; lacinia with three pigmented, hooked spines; small species (less than 3 mm) |
Lophocateres
|
|
-
|
Elytra with five or four distinct carinae; tegmen with projecting phallobasic apodeme; different pattern of pigmented lacinial spines; larger species (above 5 mm) |
8 |
| 8 |
Elytra with four distinct (higher) carinae and another three to four lower carinae among them; pronotum and elytra without tufts of long hairs, with short decumbent or semi-erect pubescence only, or without conspicuous pubescence; lacinia with two pigmented, hooked spines; tibial apical spur pattern 2-2-2; larger species (about 4.5-10.5 mm) |
Grynocharis
|
| - |
Elytra with only five distinct carinae; pronotum and elytra with tufts of long, yellow-orange hairs; lacinia with three pigmented spines at apex in pattern 1+2, apical spine large and hooked, two other spines much smaller; tibial apical spur pattern 1-1-1; smaller species (about 5 mm) |
Trichocateres
|