Key to the Australian species of Eurynassa

(males only)

1. Pronotum with median, shiny triangular areas very small (Fig. 8E); lateral carina weakly crenulate; abdominal ventrites 1–4 with deep pits near lateral margins.......................... E. stigmosa

–. Pronotum with median, shiny triangular areas larg- er, bowtie-shaped (Fig. 8A); lateral carina strongly dentate; abdominal ventrites 1–4 with smooth oval area near lateral margin...................... 2

2. Prothorax with very small granules among sexually dimorphic punctures (Fig. 8L)... E. tuberculicollis

–. Prothorax without granules or tubercles among sexually dimorphic punctures.................... 3

3. Body broad, elytral length at most twice of width; labial palps short; mandible surface weakly concave (Fig. 8I); tarsomere 3 on front and mid leg strongly lobed; abdominal ventrite 5 completely covered with sexual punctures.................. E. australis

–. Body slender, elytra length at least twice of width; labial palps longer; mandible surface strongly concave (Fig. 8J); tarsomere 3 on front and mid leg with smaller lobe; abdominal ventrite 5 not fully covered with sexual punctures............... E. servillei