Revision of Brazilian species of Aleochara Gravenhorst of the subgenus Xenochara Mulsant & Rey (Coleoptera: Staphylinidae: Aleocharinae) Author Buss, Bruna Caroline Department of Biodiversity, Federal University of Paraná, Palotina, PR, Brazil Author Caron, Edilson Department of Biodiversity, Federal University of Paraná, Palotina, PR, Brazil text Zootaxa 2023 2023-08-17 5330 4 509 534 http://dx.doi.org/10.11646/zootaxa.5330.4.3 journal article 54877 10.11646/zootaxa.5330.4.3 7a9d736b-180d-4045-b8af-cb0e8ee28b3e 1175-5326 8255121 2C9B5AE1-C90D-4E5D-BA8E-78F159C4E88A 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) .