Key to the species of Cataulax

1.Scutellum uniformly finely and densely punctured .......... subtiliterconspersus n. sp.

Scutellum withpunctures not uniform in size, distributed in lines or patches ................... 2

2.Posterior marginof metasternum almosttwice largerthananterior margin; median mesosternal plate almost flat ...................... eximius (Stål) Posterior margin of metasternum almost as wide as anterior margin; median mesosternal plate conspicuously convex anteriorly ...... 3

3. Parameres with lobes and spines (Figs. 3B, 4B, 5B) ........................... froeschneri n. sp.

Parameres simple .................................... 4

4. Internal border of postero-lateral angles of pygophore with a lobe in a percurrent flange (Fig. 3C) .......................... pudens (Distant)

Internal border of postero-lateral angles of pygophore with an obsolete denticle ....... ........................................... radians n. sp.