''Echiniscus testudo'' is a cosmopolitan species of tardigrade.

Taxonomy

The species was described by Louis Michel François Doyère in 1840; he placed it in the genus '' Emydium''. G. Ramazzotti and W. Maucci classified ''E. filamentos mongoliensis'' as a synonym of ''E. testudo'' in 1983; this was followed by other tardigradologists. In 2017, Piotr Gąsiorek and colleagues restored it as a distinct taxon and elevated it to species level: ''E. mongoliensis''. Gąsiorek and colleagues also classified ''E. filamentosus'' and ''E. glaber'' as junior synonyms of ''E. testudo''.

Distribution

It is found throughout most of the Palaearctic, and has been recorded in all continents except Antarctica and Australia. Most reports are Holarctic. Locations where it has been recorded include: Denmark, Egypt, the Faroe Islands, France, Germany, Greece, Greenland, Israel, Italy, Morocco, Iberia, Mongolia, and China. Doyère based his description off specimens collected in Paris. The neotype designated by Gąsiorek and colleagues was collected in Paris's Montmartre Cemetery. The type localities of the

junior synonym The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linna ...

s ''E. bellermanni'' and ''E. inermis'' are both in Germany: the former is Greifswald, and the latter is the Taunus mountains near Frankfurt. Echiniscus testudo Doyere 1840 Pl 12 Fig 3.png, Dorsal view, showing its four segmented bands

References

{{Taxonbar, from=Q2905351 testudo Polyextremophiles Animals described in 1840