Mesostoma ehrenbergii (Focke, 1836)
publication ID |
https://doi.org/ 10.6620/ZS.2021.60-22 |
DOI |
https://doi.org/10.5281/zenodo.12824834 |
persistent identifier |
https://treatment.plazi.org/id/7B330457-FFFE-9862-A33D-7DBAC231D6C5 |
treatment provided by |
Felipe |
scientific name |
Mesostoma ehrenbergii (Focke, 1836) |
status |
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Mesostoma ehrenbergii (Focke, 1836) View in CoL ( Fig. 6A View Fig )
Synonyms: Planaria ehrenbergii Focke, 1836 .
Mesostomum ehrenbergii Örsted, 1844 .
Mesostoma wardii Woodworth, 1896 .
Studied material: Eighteen individuals studied alive in squashed preparations, six of them fixed in alcohol (MZUSP PL 2260).
Localities: Site 1 (28/02/2019) and Site 2 (9/10/2018), associated with benthal and phytal microhabitats.
Description: Body of live individuals are 5.4 ± 2.3 mm (1.6–8.7 mm; n = 14) long and 1.5 ± 0.7 mm (0.4–2.9 mm; n = 13) wide, flattened and leaf-shaped, yellow-whitish. Round eggs of ± 0.24 mm in diameter ( Fig. 6A View Fig ).
Taxonomic remarks: The general appearance and anatomy of our specimens are in accordance with descriptions made for the Neotropical region ( Beauchamp 1939; Marcus 1943 1946; Ponce de León 1985; Noreña-Janssen and Faubel 1992; Gamo and Leal-Zanchet 2004; Noreña et al. 2006b) and other biogeographical regions ( Fuhrmann 1894; Stout 1953; Luther 1963; Young 2001). However, the body size of our specimens is smaller than those described for the Neotropical region by Beauchamp (1939) (9 mm), Marcus (1946) (15 mm), Noreña-Janssen (1995) (8–10 mm) and Gamo and Leal-Zanchet (2004) (3, 4 and 6 mm); but larger than those found in Peru by Noreña et al. (2006b) (1–1.5 mm).
Distribution: Widely distributed in freshwater ponds around the world (see Tyler et al. 2016 for a complete overview).
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