Subgenus Euconnus s. str.

Glaphostoma Schaufuss, 1889: 2 .

Type species: Glaphostoma cribricolle Schaufuss, 1889 (des. orig.). Synonymized by Csiki, 1919.

Scopophus Casey, 1897: 365 (as subgenus of Euconnus).

Type species: Euconnus affinis Casey, 1897 (des. by Franz, 1985b). Synonymized with Euconnus s. str. by Jałoszyński (2017b).

Diarthroconnus Ganglbauer, 1900: 261 (as subgenus of Euconnus).

Type species: Euconnus birnbacheri Ganglbauer, 1900 . Type species placed as junior synonym of Scydmaenus intrusus Schaum, 1844 by Csiki (1919), and Franz (in Newton & Franz (1998)) designated S. intrusus as type species of Spanioconnus Ganglbauer, 1899; consequently Diarthroconnus was regarded as subjective/objective synonym of Spanioconnus. Jałoszyński (2017e) noticed that Franz's (1998) designation of S. intrusus as the type species of Spanioconnus was not valid. Treated as synonym of Spanioconnus in Jakobson (1910); as synonym of Microscydmus in Csiki (1919); E. birnbacheri was placed as junior synonym of Euconnus fimetarius (Chaudoir, 1845) and consequently Diarthroconnus was synonymized with Euconnus s. str. by Jałoszyński (2017e).

Myrmecodytes Croissandeau, 1898a: 160 (as subgenus of Euconnus).

Type species: Scydmaenus pharaonis Motschulsky, 1851 (monotypy). Synonymized with Euconnus s. str. by Jałoszyński (2021b).

Myrmecodites; Csiki, 1919: 57. Subsequent misspelling of Myrmecodytes .

Napochus Thomson, 1859: 61 (as genus).

Type species: Scydmaenus claviger Müller & Kunze, 1822 (des. orig.). Synonymized with Euconnus s. str. by Jałoszyński (2021a).

Glandularia Schaufuss, 1889: 3 .

Type species: Glandularia fricatoris Schaufuss, 1889 (des. by Franz, 1970). Synonymized with Napochus by Franz (1970).

Connophron Casey, 1897: 390 (as genus).

Type species: Connophron repletum Casey, 1897 (des. by Franz in Newton & Franz (1998)). Synonymized with Napochus by Csiki (1919), but treated as genus by Davies (1991); retained as synonym of Napochus and subgenus of Euconnus by later authors (e.g., Downie & Arnett (1996); O’Keefe (1998)).

Protoscydmus Franz, 1992: 48 (as genus).

Type species: Protoscydmus sabahensis Franz, 1992 (des. orig.). Synonymized with Napochus by Jałoszyński (2016a).

Neonapochus Machulka, 1929: 21 (as subgenus of Napochus).

Type species: Scydmaenus maeklini Mannerheim, 1844 (monotypy). Synonymized with Napochus by Jałoszyński (2016a).

Paranapochus Franz, 1986b: 192 (as subgenus of Euconnus).

Type species: Euconnus marojejyanus Franz, 1986b (des. orig.). Synonymized with Napochus by Jałoszyński (2016a).

Paranapochus Franz, 1973: 133; Franz, 1985b: 174 (as subgenus of Euconnus; not as new). Nomen nudum, no type species designated.

Smicrophus Casey, 1897: 467 (as genus).

Type species: Smicrophus leviceps Casey, 1897 (des. by Franz in Newton & Franz (1998)); also by O’Keefe (1998)). As synonym of Microscydmus in Csiki (1919). Reduced to subgenus of Euconnus by O’Keefe (1998). Synonymized with Napochus by Jałoszyński (2017a).

Cephaloconnus Franz, 1998 (in Newton & Franz (1998): 145 (validation of Cephaloconnus Franz, 1962) (as subgenus of Euconnus).

Type species: Euconnus hypertrophicus Franz, 1962 (des. by Franz, 1998 (in Newton & Franz (1998)). Synonymized with Napochus by Jałoszyński (2017d).

Cephaloconnus Franz, 1962: 349 (as subgenus of Euconnus, nomen nudum, no type species designated).

Cerviconnus Franz, 1962 (as subgenus of Euconnus).

Type species: Euconnus bundukii Franz, 1962 (des. orig.). Synonymized with Napochus by Jałoszyński (2017d).

Cervinoconnus Franz, 1961: 194 (nomen nudum, no description); Franz, 1991: 34 (lapsus calami for Cerviconnus ?).

Allonapochus Franz, 1972: 3 (as subgenus of Euconnus; not as new).

Type species: Euconnus mauritii Franz, 1972 (monotypy). Franz (1972) referred this name to work in press (Franz 1986b) with implied type species Euconnus perineti, name not available until Franz (1986b). Synonymized with Napochus by Jałoszyński (2021b).

Allonapochus Franz, 1986b: 199 (as subgenus of Euconnus; as new).

Type species: Euconnus perineti Franz, 1986b (des. orig.).

Filonapochus Franz, 1986b: 202 (as subgenus of Euconnus).

Type species: Euconnus grylloides Franz, 1986b (des. orig.). Synonymized with Euconnus s. str. by Jałoszyński (2021a).

Pycnophus Casey, 1897: 385 .

Type species: Scydmaenus rasus LeConte, 1852 (monotypy). Reduced to subgenus of Euconnus by Franz (1985b). Synonymized with Euconnus s. str. by Jałoszyński (2021a).

Nudatoconnus Franz, 1980: 116 (as subgenus of Euconnus).

Type species: Euconnus sphaerocephalus Franz, 1980 (des. orig.). Synonymized with Pycnophus by Franz (1985b).

Psomophus Casey, 1897: 366 (as subgenus of Euconnus).

Type species: Euconnus callidus Casey, 1897 (des. by Franz, 1985b). Syn. n. of Euconnus . s. str.

Xestophus Casey, 1897: 365 (as subgenus of Euconnus).

Type species: Scydmaenus salinator LeConte, 1852 (by monotypy). Synonymized with Psomophus by Franz (1985b); resurrected by O’Keefe (1998); synonymy confirmed by Jałoszyński (2017c).

Scydmaenites Croissandeau, 1898b: 165 (as subgenus of Euconnus).

Type species: Euconnus kraatzi Reitter, 1882 (des. by Franz in Newton & Franz (1998)). Synonymized with Psomophus by Jałoszyński (2017c).

Spanioconnus Ganglbauer, 1899: 46 (as subgenus of Euconnus).

Type species: Scydmaenus wetterhalli Gyllenhal, 1813 (des. by Franz, 1960). Subsequent designation of Scydmaenus intrusus Schaum, 1844 as type species of Spanioconnus by Franz (in Newton & Franz (1998)) was not valid. As synonym of Microscydmus in Csiki (1919). Synonymized with Psomophus by Franz (1985b); synonymy confirmed by Jałoszyński (2017c).

Psocophus Franz, 1994: 341, 379. Presumable lapsus calami for Psomophus .

Eupentarius Reitter, 1907: 300 (as subgenus of Euconnus).

Type species: Euconnus grandiclavis Reitter, 1907 (monotypy). Syn. n. of Euconnus . s. str.

Euconophron Reitter, 1909: 226 (as subgenus of Euconnus).

Type species: Euconnus promptus Coquerel (in Fairmaire & Coquerel, 1860; des. by Franz in Newton & Franz (1998)). Synonymized with Eupentarius by Jałoszyński (2021b).

Euronophon Franz, 1974: 94; lapsus for Euconophron .

Ursoconnus Franz, 1963: 42 (as subgenus of Euconnus).

Type species: Euconnus basilewskyi Franz, 1962 (des. orig.). Synonymized with Euconophron by Jałoszyński (2017d).