Macrobiotus shonaicus

Macrobiotus shonaicus
Stec et al 2018 Fig 1 Macrobiotus shonaicus habitus.tif
A. Dorsoventral view of holotype (PCM);
B. Dorsal view of paratype (SEM);
C–E. Close up of anterior, median, and posterior, respectively, of paratype, showing pores (SEM).
Scale bars in μm.
Scientific classification e
Species:M. shonaicus
Binomial name
Macrobiotus shonaicus
Stec et al., 2018
Macrobiotus shonaicus is located in Japan
Macrobiotus shonaicus
Type locality of M. shonaicus

Macrobiotus shonaicus (Japanese: ショウナイチョウメイムシ) is a species of tardigrade in the family Macrobiotidae. As of 2018 it is only known from its type locality: Tsuruoka, Japan. The species description was published in 2018. The insides of their first three pairs of legs have a slight fold above their claws, and their eggs have processes whose terminal discs split off into thin filaments.

Taxonomic history

The species description was written by Daniel Stec, Kazuharu Arakawa, and Łukasz Michalczyk; it was published in PLOS One in February 2018.[1]

Arakawa collected ten M. shonaicus specimens in May 2016 from moss growing in his apartment building's parking lot, in Tsuruoka, Japan.[1]:2 The moss, Bryum argenteum, was growing on a concrete surface. One pair of these tardigrades successfully reproduced in vitro, yielding an isogenic strain.[1]:2 The holotype, 57 paratypes, and 34 eggs were deposited at Jagiellonian University in Kraków. An additional 17 paratypes and 7 eggs were deposited at Keio University, Tsuruoka.[1]:15–16

The specific epithet, shonaicus, is named after Shōnai, which the authors describe as "the region in Japan where the new species was collected".[1]:15

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