Aleochara (Xenochara) Mulsant & Rey, 1874

Buss, Bruna Caroline & Caron, Edilson, 2023, Revision of Brazilian species of Aleochara Gravenhorst of the subgenus Xenochara Mulsant & Rey (Coleoptera: Staphylinidae: Aleocharinae), Zootaxa 5330 (4), pp. 509-534 : 511

Aleochara (Xenochara) Mulsant & Rey, 1874

Xenochara Mulsant & Rey, 1874: 344 , as subgenus of Baryodma Thomson, 1858 . Type species: Aleochara decorata Aubé, 1850 (fixed by Mulsant & Rey (1874) by monotypy).

Polychara Mulsant & Rey, 1874: 348 , as subgenus of Baryodma Thomson, 1858 , including 19 species. Type species: Aleochara discipennis Mulsant & Rey, 1853 , fixed by Fenyes (1918: 24) (subsequent designation). As synonym of Xenochara Klimaszewski (1984: 34), Assing (2009: 36) and Newton (2022).

Homoeochara Mulsant & Rey, 1874: 414 , as subgenus of Baryodma Thomson, 1858 , including 3 species. Type species: Aleochara sparsa Heer, 1839 , fixed by Fenyes (1918: 23) (subsequent designation), error: as Aleochara sparsa Fairmaire & Laboulbène, 1856 in Mulsant & Rey (1874). As synonym of Xenochara Assing (2009: 36) and Newton (2022).

Dyschara Mulsant & Rey, 1874: 425 , as subgenus of Baryodma Thomson, 1858 . Type species: Aleochara inconspicua Aubé, 1850 , fixed by monotypy. As synonym of Xenochara Assing (2009: 36) and Newton (2022).

Rheochara Mulsant & Rey, 1874: 294 , as genus, without species included. Type species: Ocalea spadicea Erichson, 1837 , fixed by subsequent monotypy (the first species included by Mulsant & Rey 1875: 3). As synonym of Xenochara Assing (2016: 270) and Newton (2022).

Metalea Mulsant & Rey, 1875: 299 , as subgenus of Ocalea Erichson, 1837 . Type species: Ocalea procera Erichson, 1839 , fixed by monotypy. As synonym of Xenochara Assing (2016: 270) and Newton (2022). Note: Ocalea procera Erichson, 1839 is treated as a junior synonym of Ocalea spadicea Erichson, 1837 (Scḩlke & Smetana 2015).

Ophiochara Bernhauer, 1901: 439 , as subgenus of Aleochara Gravenhorst, 1802 , including 2 species. Type species: Aleochara breiti Ganglbauer, 1897 , fixed by Fenyes (1918: 24) (subsequent designation). As synonym of Xenochara Assing (2009: 36) and Newton (2022).

Isochara Bernhauer, 1901: 440 , as subgenus of Aleochara Gravenhorst, 1802 , including 2 sepcies. Type species: Aleochara tristis Gravenhorst, 1806 , fixed by Fenyes (1918: 23) (subsequent designation). As synonym of Xenochara Klimaszewski (1984: 35), Assing (2009: 36) and Newton (2022).

Notiochara Casey, 1906: 134 , as genus, including 2 species. Type species: Notiochara subaspera Casey, 1906 , fixed by Fenyes (1918: 24) (subsequent designation). As synonym of Xenochara Klimaszewski & Jansen (1993: 68) and Newton (2022).

Euryodma Reitter, 1909: 24 , as subgenus of Aleochara Gravenhorst, 1802 . Type species: Aleochara brevipennis Gravenhorst, 1806 , fixed by monotypy. As synonym of Xenochara Assing (2009: 36) and Newton (2022).

The diagnosis of the subgenus was modified by Park & Ahn (2010). The species of Aleochara (Xenochara) can be separated from other subgenera of Aleochara by the following combination of characters: body compact and robust (somewhat less than Aleochara ( Aleochara )); antennomere 4 and 5 wider than long or slightly longer than wide; antennomeres 6–10 moderately transverse; mandibles symmetrical, without internal teeth; maxillary palpomere 4 one-third to three-fourths length of palpomere 3; labium with bifurcated glossa; beta seta of labial palpi long; pronotum uniformly pubescent; mesoventrite completely carinate, sometimes the carina is slightly shorter; spines of lateral margins of protibia and mesotibia present, but absent in metatibia.

Note: In some Brazilians species, the labral b-sensilla is long, not very short (sharpened or rounded apically) as in Park & Ahn (2010, mentioned as labral b-seta); and the carina on each side of the midline of the ventral surface of the head is very short, and not long and attaining the gular suture as in Park & Ahn (2010).