Subgenus Tetramelus Motschulsky

Tetramelus Motschulsky, 1869: 257 .

Type species: Scydmaenus oblongus Sturm, 1838 (des. by Franz in Newton & Franz, 1998).

Euconnoides Croissandeau, 1898b: 154 (as subgenus of Euconnus).

Type species: Scydmaenus styriacus Grimmer, 1841 (des. Franz in Newton & Franz, 1998). Synonymized with Tetramelus by Csiki (1919).

Drastophus Casey, 1897: 389 .

Type species: Drastophus laevicollis Casey, 1897 (monotypy). Synonymized with Euconnus s. str. by Franz (1985b); resurrected as subgenus by O’Keefe (1998); synonymized with Tetramelus by Jałoszyński (2017a).

Drasterophus; Franz, 1985b: 171 (subsequent misspelling of Drastophus).

Dimorphoconnus Franz, 1975: 177 (as subgenus of Euconnus).

Type species: Scydmaenus insigniventris Lea, 1912 (des. orig.). Synonymized with Tetramelus by Jałoszyński, 2021b.

Heteroconnus Franz, 1963: 40 (as subgenus of Euconnus).

Type species: Euconnus impressicollis Franz, 1963 (des. orig.). Synonymized with Tetramelus by Jałoszyński (2021b).

Paratetramelus Franz, 1963: 25 (as subgenus of Euconnus).

Type species: Euconnus kenyae Franz, 1963 (des. orig.). Synonymized with Tetramelus by Jałoszyński (2021b).