Key to species of Tiodus

1. Head, pronotum and scutellum entirely red................................................................ 2

- Head, pronotum and scutellum not entirely red.............................................................. 4

2. Median process of aedeagus in lateral view quadrangular................................................ T. minor

- Median process of aedeagus in lateral view acute........................................................... 3

3. Paramere spine quadrangular................................................................... T. rufescens

- Paramere spine acute......................................................................... T. elongatus

4. Tegmina black with two reddish orange transverse transcommissural bands; spine of paramere absent; aedeagus shaft not bifid.................................................................................. T. sakakibarai sp. nov.

- Tegmina unicolored; spine of paramere present; aedeagus with a bifid shaft....................................... 5

5. Pronotum and tegmina black................................................................... T. nigricans

- Pronotum and tegmina yellow.......................................................................... 6

6. Aedeagus very broad apically in antero-posterior view................................................. T. youngi

- Aedeagus narrow apically in antero-posterior view................................................... T. nuchalis