APPENDIX 1
Key to the subgenera of Malthodes:
| (1) | Aedeagus small and globular; elytra very short or short enough to leave at least the last abdominal segments uncovered | 2 |
| Aedeagus large and elongate; elytra long enough to cover and slightly surpass the last abdominal segment; posteriormost urites little modified | Libertimalthodes subg. nov. | |
| (2) | Elytra short; metathoracic wings tend to be present | Malthodes Kiesenwetter, 1852 |
| Elytra very short; wings absent; head elongate; pronotum longitudinal | Podistrina Fairmaire, 1875 |
