Key to species of Entyposis, males only (modified from Lacroix & Montreuil 2012)

1. Pronotum slightly excavated; tubercle barely indicated .................................................................................................................. 2

- Pronotum distinctly excavated; tubercle of pronotum visible, more-or-less prominent .................................................................. 4

2. Dorsal surface with scale-like setae, size 11.5–13.8 mm ............................................................. E. cordipenis Sehnal, new species

- Dorsal surface with short or long setae ........................................................................................................................................... 3

3. Elytra with short setae, small size 10.5–12.0 mm ................................................................................... E. mendax Péringuey, 1904

- Elytra with long setae, largest size 14–16 mm ............................................................................................ E. impressa Kolbe, 1895

4. Protibia bidentate............................................................................................................................................................................... 5

- Protibia tridentate............................................................................................................................................................................. 6

5. Elytra without macrosetae. Paramere apices curved outward into hooks. Terminal maxillary palpomere elongate. Antennal club no longer than antennal shaft............................................................................................................. E. cavicollis (Fairmaire, 1887)

- Elytra with visible macrosetae. Paramere apices curved inward into hooks. Terminal maxillary palpomere wide and flat at apex.

Antennal club longer than antennal shaft .......................................................................... E. bidentata Lacroix & Montreuil, 2012 6. Pronotum tuberculate and bilobed at apex ........................................................................ E. martinezi Lacroix & Montreuil, 2012

- Pronotal tuberculation only indicated .............................................................................................................................................. 7 7. Elytra with dense and strong squamation. Punctation of 8th tergite with dense, fine, short setae...................................................... ......................................................................................................................................... E. squamulata Lacroix & Montreuil, 2012

- Elytral squamation sparse, fine, less visible. Punctation of 8th tergite with scattered, long, erect or semierect setae.................... 8

8. Elytral setae thin, visible. Antennal club not longer than funicle. Parameres hooked at apex .......................................................... ........................................................................................................................................ E. madogolelei Lacroix & Montreuil, 2012

- Elytral setae much less visible. Antennal club longer than funicle. Paramere apices flattened and rounded .................................. 9

9. Terminal maxillary palpomere enlarged at apex. Dorsal surface yellowish brown, body brownish yellow....................................... .............................................................................................................................................. E. rasplusi Lacroix & Montreuil, 2012

- Terminal maxillary palpomere rounded at apex. All dorsal surface and body chestnut brown.......................................................... .............................................................................................................................................. E. excavata Lacroix & Montreuil, 2012