Sibiota Casey 1906

• Main Author: Gusarov, Vladimir I.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2002
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Staphylinidae; Sibiota; Chandler; Newfoundland
• Online Access: https://zenodo.org/record/6277556; https://doi.org/10.5281/zenodo.6277556

Subgenus Sibiota Casey, 1906 Sibiota Casey, 1906: 350 (Type species: Sibiota impressula Casey, 1906, by original designation) (as a genus in tribe Bolitocharini Thomson, 1859). Sibiota: Fenyes, 1920: 249 (as synonym of Sipalia Mulsant & Rey, 1853). Sibiota: Bernhauer & Scheerpeltz, 1926: 599 (as synonym of Sipalia). Ditroposipalia Scheerpeltz, 1951: 172 (Type species: Leptusa bidens Baudi, 1869, by original designation) (as subgenus of Sipalia), syn. nov. Sibiota: Seevers, 1978: 128 (as valid genus in subtribe Geostibina Seevers, 1978). Sibiota: Lohse & Smetana, 1988: 270 (as synonym of Geostiba). Sibiota: Ashe in Newton, Thayer, Ashe & Chandler, 2000: 371 (as subgenus of Geostiba). (other references for Palaearctic Ditroposipalia are omitted) Diagnosis. Sibiota differs from other subgenera of Geostiba in having two longitudinal carinae in the middle of male abdominal tergum 7 in front of posterior margin. Synonyms. Ditroposipalia is placed in synonymy with Sibiota because the type species of both have two longitudinal carinae on the male tergum 7. Discussion. Lohse and Smetana (1988) did not assign any of their four species to subgenera. Pace assigned his three species to subgenera Ditroposipalia (synonymized here with Sibiota) and Lioglutosipalia Scheerpeltz, 1951. The latter is now considered a synonym of Sipalotricha Scheerpeltz, 1931 (Assing 1999), which lacks modifications on male tergum 7. The males of both western Nearctic species of Geostiba have male abdominal tergum with two carinae and are placed in the subgenus Sibiota (= Ditroposipalia). Eight of the twelve Appalachian species have male secondary characters corresponding to Sibiota and four species are consistent with Sipalotricha. However there are good reasons to believe that all sixteen native Nearctic species of Geostiba (that is, excluding G. circellaris introduced to Newfoundland) form a monophyletic group in relation to Palaearctic species of Sibiota (= Ditroposipalia) or Sipalotricha. There are some characters shared by all ...