Polycelis
Genus of flatworms
From Wikipedia, the free encyclopedia
Polycelis is a genus of planarians in the family Planariidae found in the Holarctic region (North America and Eurasia).[2][1] The genus was described in 1831 by Christian Gottfried Ehrenberg[1] and currently has no consensus on the exact number of species.
| Polycelis | |
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| Polycelis nigra | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida |
| Family: | Planariidae |
| Genus: | Polycelis Ehrenberg, 1831 |
| Synonyms[1] | |
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Description
Species of Polycelis are characterized by having multiple eyes on the anterior region, similar to the related genera Seidlia and Ijimia. It is differentiated from them by lacking both a highly developed muscle coat around the male atrium (as seen in Seidlia) and adenodactyls (as seen in Ijimia).[2]
Habitat
Most species of Polycelis inhabit clean, high-altitudinal streams with water temperatures between 0 and 14 °C in Eurasia and North America.[2]
Species
The following species are recognised in the genus Polycelis:[3]
- Polycelis aurantiacus Panceri, 1875
- Polycelis benazzii de Beauchamp, 1955
- Polycelis bilinearis Diesing, 1850
- Polycelis brunnea (Müller, 1773)
- Polycelis catulus Girard, 1893
- Polycelis cormita Hunt, 1948
- Polycelis coronata (Girard, 1891)
- Polycelis eburnea (Muth, 1912)
- Polycelis elegans Diesing, 1850
- Polycelis eudendrocoeloides Zabusova, 1929
- Polycelis eurantron Zabusova, 1936
- Polycelis fallax Quatrefage, 1845
- Polycelis felina (Dalyell, 1814)
- Polycelis gracilis (Seidl, 1911)
- Polycelis jinglensis Liu, 1996
- Polycelis jingyuanica Liu, 1996
- Polycelis kashmirica Liu, 1993
- Polycelis koslowi (Zabusov, 1911)
- Polycelis kulsaika Zabusov-Zhdanova, 1947
- Polycelis lhunzhubica Liu, 1993
- Polycelis linkoi Sabussov, 1901
- Polycelis nigra (Müller, 1774)
- Polycelis nigro-fusca Diesing, 1850
- Polycelis nyingchica Liu, 1993
- Polycelis oculimarginata (Palombi, 1931)
- Polycelis pallida Diesing, 1850
- Polycelis pamirensis de Beauchamp, 1961
- Polycelis panniculatus Girard, 1893
- Polycelis pantherina Babalean, 2022
- Polycelis pathan de Beauchamp, 1959
- Polycelis polyopis Zabusova, 1936
- Polycelis pulla Diesing, 1850
- Polycelis receptaculosa (Livanov & Zabusova, 1940)
- Polycelis relicta (Sabussowa, 1929)
- Polycelis sapporo (Ijima & Kaburaki, 1916)
- Polycelis schmidti (Zabusov, 1916)
- Polycelis sierrensis Kenk, 1973
- Polycelis sinensis Liu, 1993
- Polycelis stummeri (Seidl, 1911)
- Polycelis surantion Zabusova, 1936
- Polycelis tenuis Ijima, 1884
- Polycelis tibetica Hyman, 1934
- Polycelis tothi Mehely, 1927
- Polycelis vaginuloides Diesing, 1850
- Polycelis variabilis Girard, 1850
- Polycelis wutaishanica Liu, 1993
- Polycelis yangchengensis Dong, Chen, Zhang & Liu, 2017
- Polycelis xigazensis Liu, 1993