Korean: (Ohara and Paik, 1998).
Key to the Korean species of the genus Margarinotus
1 (8) Pronotum with two lateral pronotal striae. ... Subgenus Ptomister Holber et Monnot
2 (7) Prosternal keel without carinal stria. Body larger, 5.0 - 9.2 mm.
3 (4) Lateral stria of metasternum united with oblique stria of metasternum. .......................................................... M. (P.) agnatus (Lewis, 1884)
4 (3) Lateral stria of metasternum not united with oblique stria of metasternum.
5 (6) Outer lateral pronotal stria extending beyond basal end of inner one. ..................................... M. (P.) weymarni Wenzel, 1944
6 (5) Outer lateral pronotal stria not extending beyond basal end of inner one. .......................... M. (P.) striola striola (C. R. Sahlberg, 1819)
7 (2) Prosternal keel with carinal stria. Body smaller, 4.0 - 4.5 mm. ........................................... M. (P.) sutus (Lewis, 1884)
8 (1) Pronotum with one lateral pronotal stria.
9 (12) Pronotal marginal stria short, usually present on apical area, at most attaining to half length of pronotum. Denticle of protibiae rather large. ................................................... Subgenus Paralister Bickhardt
10 (11) Propygidium and pygidium densely and finely punctate, the top of pygidium smooth. Elytra entirely black. ........................ M. (Pa.) koenigi (Schmidt, 1888)
11 (10) Propygidium evenly covered with coarse punctures; punctures of pygidium finer than the propygidial. Each elytron usually with large and obscure dark brown maculata, the maculata rarely occupied wholly except along sutural area; the elytra entirely sometime black or reddish brown. ............... M. (Pa.) purpurascens (Herbst, 1972)
12 (9) Pronotal marginal stria nearly complete, abbreviated only at the base. Protibiae with large denticles or numerous small ones. ......... Subgenus Grammostethus Lewis...................................... M. (G.) niponicus (Lewis, 1884)
Key to the Taiwanese species of the genus Margarinotus*
1 (8) Pronotum with two lateral pronotal striae (Subgenus Ptomister).
2 (3) Number of denticles of protibia 20-21. .................... M. multidens (Schmidt, 1889)
3 (2) Number of denticles of protibia 3-8.
4 (7) Inner pronotal lateral stria complete and straight on anterior portion.
5 (6) Lateral stria of metasternum not united with oblique stria. Basal rudiment of 5th dorsal elytral stria absent. ........................................ M. incognitus (Marseul, 1854)
6 (5) Lateral stria of metasternum united with oblique stria. Basal rudiment of 5th dorsal elytral stria present as an arc. ........................................ M. osawai M. Ohara, 1999
7 (4) Inner pronotal lateral stria interrupted behind eyes, and sinuate on anterior portion. ..................................................................................... M. babai M. Ohara, 1999**
8 (1) Pronotum with one lateral stria (Subgenus Grammostethus).
9 (10) Sutural stria of elytron complete. Propygidium and pygidium partially reddish-brown. Prosternal keel with carinal stria. ........................ M. curvicollis (Bickhardt, 1913)
10 (9) Sutural stria present on apical half. Pygidia wholly black. Prosternal keel without carinal stria. ..................................................... M. formosanus M. Ohara, 1999***
*: Margarinotus (Ptomister) reichardti Kryzhanovskij was erroneously recorded from Taiwan by Ohara (1994: 141). This species has not been found in Taiwan.
**: This species has been referred to boleti.
***: This species has been referred to niponicus.