MilliBase
MilliBase taxon details
Semionellus placidus (Wood, 1864)
945954 (urn:lsid:marinespecies.org:taxname:945954)
accepted
Species
Chonaphe michigana Chamberlin, 1946 · unaccepted
Chonaphe michiganus Chamberlin, 1946 · unaccepted
Leptodesmus borealis Bollman, 1893 · unaccepted > junior subjective synonym
Leptodesmus placidus (Wood, 1864) · unaccepted
Polydesmus floridus Wood, 1864 · unaccepted > junior subjective synonym
Polydesmus placidus Wood, 1864 · unaccepted
Semionellus michiganus (Chamberlin, 1946) · unaccepted
Trichomorpha placida (Wood, 1864) · unaccepted
(of Polydesmus placidus Wood, 1864) Wood, H. C. (1864). Descriptions of new species of North American Polydesmidae. <em>Proceedings of the Academy of natural Science of Philadelphia.</em> 16: 6-10., available online at https://www.biodiversitylibrary.org/page/1942660
page(s): 9 [details]
page(s): 9 [details]
Type locality contained in Michigan
type locality contained in Michigan [from synonym] [view taxon] [details]
Decker, P.; Sierwald, P.; Spelda, J.; Barber, A.D.; Antic, D.; Bouzan, R.; Enghoff, H.; Hennen, D.; Iniesta, L. F. M.; Means, J.; Nguyen, A. D.; Simmons, E.; Wesener, T. (2026). MilliBase. Semionellus placidus (Wood, 1864). Accessed at: https://www.millibase.org/rest/AphiaRecordsByTaxonRankID/aphia.php?p=taxdetails&id=945954 on 2026-09-14
original description
(of Leptodesmus borealis Bollman, 1893) Bollman, C. H. (1893). A list of the Myriapoda of Minnesota. Bulletin of the United States National Museum, 46: 181-185. Washington, available online at https://www.biodiversitylibrary.org/page/32368526
page(s): 183 [details]
original description (of Semionellus michiganus (Chamberlin, 1946)) Chamberlin, R. V. (1946). Two new species of the milliped genera Chonaphe and Aniulus. Proceedings of the Biological Society of Washington, 59: 31-34
page(s): 31 [details]
original description (of Chonaphe michiganus Chamberlin, 1946) Chamberlin, R. V. (1946). Two new species of the milliped genera Chonaphe and Aniulus. Proceedings of the Biological Society of Washington, 59: 31-34
page(s): 31 [details]
original description (of Polydesmus floridus Wood, 1864) Wood, H. C. (1864). Descriptions of new species of North American Polydesmidae. <em>Proceedings of the Academy of natural Science of Philadelphia.</em> 16: 6-10., available online at https://www.biodiversitylibrary.org/page/1942660
page(s): 9 [details]
original description (of Polydesmus placidus Wood, 1864) Wood, H. C. (1864). Descriptions of new species of North American Polydesmidae. <em>Proceedings of the Academy of natural Science of Philadelphia.</em> 16: 6-10., available online at https://www.biodiversitylibrary.org/page/1942660
page(s): 9 [details]
redescription Shelley, R. M. (1994). The Chonaphini, a biogeographically significant millipede tribe in eastern and western north America (Polydesmida: Xystodesmidae). Brimleyana , 20: 111-203
page(s): 149 [details]
page(s): 183 [details]
original description (of Semionellus michiganus (Chamberlin, 1946)) Chamberlin, R. V. (1946). Two new species of the milliped genera Chonaphe and Aniulus. Proceedings of the Biological Society of Washington, 59: 31-34
page(s): 31 [details]
original description (of Chonaphe michiganus Chamberlin, 1946) Chamberlin, R. V. (1946). Two new species of the milliped genera Chonaphe and Aniulus. Proceedings of the Biological Society of Washington, 59: 31-34
page(s): 31 [details]
original description (of Polydesmus floridus Wood, 1864) Wood, H. C. (1864). Descriptions of new species of North American Polydesmidae. <em>Proceedings of the Academy of natural Science of Philadelphia.</em> 16: 6-10., available online at https://www.biodiversitylibrary.org/page/1942660
page(s): 9 [details]
original description (of Polydesmus placidus Wood, 1864) Wood, H. C. (1864). Descriptions of new species of North American Polydesmidae. <em>Proceedings of the Academy of natural Science of Philadelphia.</em> 16: 6-10., available online at https://www.biodiversitylibrary.org/page/1942660
page(s): 9 [details]
redescription Shelley, R. M. (1994). The Chonaphini, a biogeographically significant millipede tribe in eastern and western north America (Polydesmida: Xystodesmidae). Brimleyana , 20: 111-203
page(s): 149 [details]
Present Inaccurate Introduced: alien Containing type locality
