Sibiota Casey 1906
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: 5...
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Online Access: | https://dx.doi.org/10.5281/zenodo.6277556 https://zenodo.org/record/6277556 |
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Open Polar |
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Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Staphylinidae Sibiota |
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Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Staphylinidae Sibiota Gusarov, Vladimir I. Sibiota Casey 1906 |
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Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Staphylinidae Sibiota |
description |
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 native Nearctic species of Geostiba that may be autapomorphies for this group of species. These include: slightly raised elytral suture behind scutellum (except G. impressula ); the proximal seta on the external side of paramere apex is the longest; internal sac of the aedeagus has two pairs of diverticula (Figs. 42, 48, 198, 210, 318), medial lamellae are short, narrow and bent ventrally (Figs. 40, 47, 201, 208). This form of the internal sac is very different from the forms found in Palaearctic G. ( s. str .) circellaris (Figs. 2122), G. ( Sipalotricha ) infirma (Figs. 2425), G. ( Sibiota ) padana (Figs. 2627) and G. ( Sibiota ) oertzeni (Fig. 28). The hypothesis of monophyly of the Nearctic group of species can be tested only if representatives from other lineages are included in the analysis, which is outside the scope of the present paper. However, if this hypothesis is accepted and both Sibiota and Sipalotricha are monophyletic groups, then all native Nearctic species must be placed in the same subgenus of Geostiba . Among the twelve Appalachian species, G. appalachigena is the least adapted to cryptic habitats such as soil and leaf litter and has the following plesiomorphies: well developed wings, long elytra (longer than pronotum), large eyes (temple length / eye length ratio 2.32.7) and large body (pronotal width 0.400.47 mm). Geostiba appalachigena has well developed carinae on the male tergum 7 and could be considered a typical representative of the subgenus Sibiota . The four species of Geostiba without carinae can be considered as more adapted to cryptic habitats. In comparison to G. appalachigena they have the following apomorphies: reduced wings, short elytra (shorter than pronotum), small eyes (temple length / eye length ratio 3.8 6.0) and smaller body (pronotal width 0.340.44 mm). One can hypothesize that the four species without carinae on male tergum 7 originated from an ancestor or ancestors with carinae. Two arguments confirm that this scenario is possible. Geostiba balsamensis , one of the smaller species (pronotal width 0.36 0.39), has weak enough carinae on tergum 7 that Pace (1997) overlooked them and placed this species in Lioglutosipalia . The state of the carinae in G. balsamensis can be considered intermediate between the well developed and the absent states. In many species of Geostiba the small males are known to lack secondary sexual characters present in the large males (Assing 2000). The same trend may take place when species evolve to a smaller size. Taking into account the above arguments, I place all sixteen native Nearctic species of Geostiba in the subgenus Sibiota . This subgenus is also represented in the Palaearctic region from Europe to the Caucasus, Central Asia, Siberia and the Far East. : Published as part of Gusarov, Vladimir I., 2002, A revision of Nearctic species of the genus Geostiba Thomson, 1858 (Coleoptera: Staphylinidae: Aleocharinae), pp. 1-88 in Zootaxa 81 on pages 18-19, DOI: 10.5281/zenodo.155701 : {"references": ["Casey, T. L. (1906) Observations on the staphylinid groups Aleocharinae and Xantholinini, chiefly of America. Transactions of the Academy of Science of St. Louis, 16, 125 - 434.", "Fenyes, A. (1920) Coleoptera. Fam. Staphylinidae, subfam. Aleocharinae. In: Wytsman, P. (Ed.), Genera Insectorum, Fasc. 173 B. Bruxelles: L. Desmet-Verteneuil, pp. 111 - 414.", "Mulsant, E. & Rey, C. (1853) Description de quelques Coleopteres nouveaux ou peu connus, de la tribu des Brachelytres. Annales de la Societe Linneenne de Lyon, ser. 2, 1, 22 - 72.", "Bernhauer, M. & Scheerpeltz, O. (1926) Staphylinidae VI. In: Junk, W. & Schenkling, S. (Eds.), Coleopterorum Catalogus, Pars 82. Berlin: W. Junk, pp. 499 - 988.", "Scheerpeltz, O. (1951) Die neue Systematik der Gattung Sipalia Muls. Rey (Col. Staphylinidae). Verhandlungen der Zoologisch-botanischen Gesellschaft in Wien, 92, 166 - 180.", "Seevers, C. H. (1978) A generic and tribal revision of the North American Aleocharinae (Coleoptera: Staphylinidae). Fieldiana: Zoology, 71, vi + 275 pp.", "Lohse, G. A. & Smetana, A. (1988) Four new species of Geostiba Thomson from the Appalachian mountains of North Carolina, with a key to North American species and synonymic notes (Coleoptera: Staphylinidae: Aleocharinae). The Coleopterists Bulletin, 42 (3), 269 - 278.", "Newton, A. F., Thayer, M. K., Ashe, J. S. & Chandler, D. S. (2000). Staphylinidae Latreille, 1802. In: Arnett, R. H., Thomas, M. C. (Eds.), American Beetles. Vol. 1. Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia. Boca Raton: CRC Press, pp. 272 - 418.", "Assing, V. (1999) A revision of the species of Geostiba Thomson 1858 from Greece and Cyprus (Coleoptera, Staphylinidae, Aleocharinae). Linzer biologische Beitrage, 31 (2), 845 - 928.", "Pace, R. (1997) Aleocharinae attere del North Carolina, Tennessee e Oregon (Coleoptera, Staphylinidae). Bollettino del Museo Regionale di Scienze Naturali, Torino, 15 (1), 101 - 110.", "Assing, V. (2000) On some species of Geostiba Thomson, 1858 from the eastern Alps (Coleoptera: Staphylinidae, Aleocharinae). Koleopterologische Rundschau, 70, 79 - 85."]} |
format |
Text |
author |
Gusarov, Vladimir I. |
author_facet |
Gusarov, Vladimir I. |
author_sort |
Gusarov, Vladimir I. |
title |
Sibiota Casey 1906 |
title_short |
Sibiota Casey 1906 |
title_full |
Sibiota Casey 1906 |
title_fullStr |
Sibiota Casey 1906 |
title_full_unstemmed |
Sibiota Casey 1906 |
title_sort |
sibiota casey 1906 |
publisher |
Zenodo |
publishDate |
2002 |
url |
https://dx.doi.org/10.5281/zenodo.6277556 https://zenodo.org/record/6277556 |
long_lat |
ENVELOPE(-67.496,-67.496,-67.132,-67.132) ENVELOPE(9.895,9.895,63.645,63.645) ENVELOPE(-59.682,-59.682,-64.490,-64.490) |
geographic |
St. Louis Seta Chandler |
geographic_facet |
St. Louis Seta Chandler |
genre |
Newfoundland Siberia |
genre_facet |
Newfoundland Siberia |
op_relation |
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Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess |
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ftdatacite:10.5281/zenodo.6277556 2023-05-15T17:23:11+02:00 Sibiota Casey 1906 Gusarov, Vladimir I. 2002 https://dx.doi.org/10.5281/zenodo.6277556 https://zenodo.org/record/6277556 unknown Zenodo http://publication.plazi.org/id/A769916EFF9E39234C25FFBCFFE8FFDA http://zoobank.org/B36587A1-248A-4194-8424-46C9BBA15606 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.155701 http://publication.plazi.org/id/A769916EFF9E39234C25FFBCFFE8FFDA https://dx.doi.org/10.5281/zenodo.155709 https://dx.doi.org/10.5281/zenodo.155730 https://dx.doi.org/10.5281/zenodo.155731 https://dx.doi.org/10.5281/zenodo.155745 https://dx.doi.org/10.5281/zenodo.155705 https://dx.doi.org/10.5281/zenodo.155706 http://zoobank.org/B36587A1-248A-4194-8424-46C9BBA15606 https://dx.doi.org/10.5281/zenodo.6277555 https://zenodo.org/communities/biosyslit Open Access Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 info:eu-repo/semantics/openAccess CC0 Biodiversity Taxonomy Animalia Arthropoda Insecta Coleoptera Staphylinidae Sibiota article-journal ScholarlyArticle Taxonomic treatment Text 2002 ftdatacite https://doi.org/10.5281/zenodo.6277556 https://doi.org/10.5281/zenodo.155701 https://doi.org/10.5281/zenodo.155709 https://doi.org/10.5281/zenodo.155730 https://doi.org/10.5281/zenodo.155731 https://doi.org/10.5281/zenodo.155745 https://doi.or 2022-04-01T12:36:57Z 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 native Nearctic species of Geostiba that may be autapomorphies for this group of species. These include: slightly raised elytral suture behind scutellum (except G. impressula ); the proximal seta on the external side of paramere apex is the longest; internal sac of the aedeagus has two pairs of diverticula (Figs. 42, 48, 198, 210, 318), medial lamellae are short, narrow and bent ventrally (Figs. 40, 47, 201, 208). This form of the internal sac is very different from the forms found in Palaearctic G. ( s. str .) circellaris (Figs. 2122), G. ( Sipalotricha ) infirma (Figs. 2425), G. ( Sibiota ) padana (Figs. 2627) and G. ( Sibiota ) oertzeni (Fig. 28). The hypothesis of monophyly of the Nearctic group of species can be tested only if representatives from other lineages are included in the analysis, which is outside the scope of the present paper. However, if this hypothesis is accepted and both Sibiota and Sipalotricha are monophyletic groups, then all native Nearctic species must be placed in the same subgenus of Geostiba . Among the twelve Appalachian species, G. appalachigena is the least adapted to cryptic habitats such as soil and leaf litter and has the following plesiomorphies: well developed wings, long elytra (longer than pronotum), large eyes (temple length / eye length ratio 2.32.7) and large body (pronotal width 0.400.47 mm). Geostiba appalachigena has well developed carinae on the male tergum 7 and could be considered a typical representative of the subgenus Sibiota . The four species of Geostiba without carinae can be considered as more adapted to cryptic habitats. In comparison to G. appalachigena they have the following apomorphies: reduced wings, short elytra (shorter than pronotum), small eyes (temple length / eye length ratio 3.8 6.0) and smaller body (pronotal width 0.340.44 mm). One can hypothesize that the four species without carinae on male tergum 7 originated from an ancestor or ancestors with carinae. Two arguments confirm that this scenario is possible. Geostiba balsamensis , one of the smaller species (pronotal width 0.36 0.39), has weak enough carinae on tergum 7 that Pace (1997) overlooked them and placed this species in Lioglutosipalia . The state of the carinae in G. balsamensis can be considered intermediate between the well developed and the absent states. In many species of Geostiba the small males are known to lack secondary sexual characters present in the large males (Assing 2000). The same trend may take place when species evolve to a smaller size. Taking into account the above arguments, I place all sixteen native Nearctic species of Geostiba in the subgenus Sibiota . This subgenus is also represented in the Palaearctic region from Europe to the Caucasus, Central Asia, Siberia and the Far East. : Published as part of Gusarov, Vladimir I., 2002, A revision of Nearctic species of the genus Geostiba Thomson, 1858 (Coleoptera: Staphylinidae: Aleocharinae), pp. 1-88 in Zootaxa 81 on pages 18-19, DOI: 10.5281/zenodo.155701 : {"references": ["Casey, T. L. (1906) Observations on the staphylinid groups Aleocharinae and Xantholinini, chiefly of America. Transactions of the Academy of Science of St. Louis, 16, 125 - 434.", "Fenyes, A. (1920) Coleoptera. Fam. Staphylinidae, subfam. Aleocharinae. In: Wytsman, P. (Ed.), Genera Insectorum, Fasc. 173 B. Bruxelles: L. Desmet-Verteneuil, pp. 111 - 414.", "Mulsant, E. & Rey, C. (1853) Description de quelques Coleopteres nouveaux ou peu connus, de la tribu des Brachelytres. Annales de la Societe Linneenne de Lyon, ser. 2, 1, 22 - 72.", "Bernhauer, M. & Scheerpeltz, O. (1926) Staphylinidae VI. In: Junk, W. & Schenkling, S. (Eds.), Coleopterorum Catalogus, Pars 82. Berlin: W. Junk, pp. 499 - 988.", "Scheerpeltz, O. (1951) Die neue Systematik der Gattung Sipalia Muls. Rey (Col. Staphylinidae). Verhandlungen der Zoologisch-botanischen Gesellschaft in Wien, 92, 166 - 180.", "Seevers, C. H. (1978) A generic and tribal revision of the North American Aleocharinae (Coleoptera: Staphylinidae). Fieldiana: Zoology, 71, vi + 275 pp.", "Lohse, G. A. & Smetana, A. (1988) Four new species of Geostiba Thomson from the Appalachian mountains of North Carolina, with a key to North American species and synonymic notes (Coleoptera: Staphylinidae: Aleocharinae). The Coleopterists Bulletin, 42 (3), 269 - 278.", "Newton, A. F., Thayer, M. K., Ashe, J. S. & Chandler, D. S. (2000). Staphylinidae Latreille, 1802. In: Arnett, R. H., Thomas, M. C. (Eds.), American Beetles. Vol. 1. Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia. Boca Raton: CRC Press, pp. 272 - 418.", "Assing, V. (1999) A revision of the species of Geostiba Thomson 1858 from Greece and Cyprus (Coleoptera, Staphylinidae, Aleocharinae). Linzer biologische Beitrage, 31 (2), 845 - 928.", "Pace, R. (1997) Aleocharinae attere del North Carolina, Tennessee e Oregon (Coleoptera, Staphylinidae). Bollettino del Museo Regionale di Scienze Naturali, Torino, 15 (1), 101 - 110.", "Assing, V. (2000) On some species of Geostiba Thomson, 1858 from the eastern Alps (Coleoptera: Staphylinidae, Aleocharinae). Koleopterologische Rundschau, 70, 79 - 85."]} Text Newfoundland Siberia DataCite Metadata Store (German National Library of Science and Technology) St. Louis ENVELOPE(-67.496,-67.496,-67.132,-67.132) Seta ENVELOPE(9.895,9.895,63.645,63.645) Chandler ENVELOPE(-59.682,-59.682,-64.490,-64.490) |