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Keywords = Mesobiotus harmsworthi group

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15 pages, 5728 KiB  
Article
New Records of Tardigrades from the Republic of South Africa with Integrative Description of a New Mesobiotus Species (Tardigrada: Eutardigrada: Macrobiotidae)
by Wiktoria Dmuchowska, Katarzyna Nawrot, Magdalena Gawlak, Jędrzej Warguła and Łukasz Kaczmarek
Taxonomy 2025, 5(2), 20; https://doi.org/10.3390/taxonomy5020020 - 14 Apr 2025
Viewed by 690
Abstract
In this study, we provide a comprehensive description of a newly identified eutardigrade species, Mesobiotus longiconicus sp. nov., based on an integrative approach combining morphological and genetic data. The species was discovered at Lajuma Research Centre, Republic of South Africa, and is classified [...] Read more.
In this study, we provide a comprehensive description of a newly identified eutardigrade species, Mesobiotus longiconicus sp. nov., based on an integrative approach combining morphological and genetic data. The species was discovered at Lajuma Research Centre, Republic of South Africa, and is classified within the harmsworthi group. It can be differentiated from its closest relatives—Meb. barabanovi, Meb. ethiopicus, Meb. harmsworthi, Meb. reinhardti, and Meb. skorackii—by distinct morphological and morphometric characteristics of the bucco-pharyngeal apparatus, claws, and eggs. These morphological differences are further validated by genetic analyses using four molecular markers: 28S rRNA, 18S rRNA, COI, and ITS2. Additionally, two other tardigrade species were identified in the same locality, including Minibiotus pentannulatus, which is now recorded for the second time outside its type locality. With this discovery, the total number of tardigrade taxa reported from South Africa reaches 101, including Meb. longiconicus sp. nov. Full article
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24 pages, 22554 KiB  
Article
Integrative Descriptions of Two New Mesobiotus Species (Tardigrada, Eutardigrada, Macrobiotidae) from Vietnam
by Daniel Stec
Diversity 2021, 13(11), 605; https://doi.org/10.3390/d13110605 - 21 Nov 2021
Cited by 16 | Viewed by 3166
Abstract
To date, 34 tardigrade taxa have been recorded from Vietnam and this includes only two macrobiotid species belonging to the genus Mesobiotus. In this paper, two additional species of this genus, one of the M. harmsworthi group and one of the M. [...] Read more.
To date, 34 tardigrade taxa have been recorded from Vietnam and this includes only two macrobiotid species belonging to the genus Mesobiotus. In this paper, two additional species of this genus, one of the M. harmsworthi group and one of the M. furciger group, are reported and described as new for science (Mesobiotus imperialis sp. nov., Mesobiotus marmoreus sp. nov.). Both descriptions have an integrative character providing detailed morphological and morphometric data collected by phase contrast and scanning electron microscopy that are linked to genetic data. The latter constitute DNA sequences of molecular markers that are commonly used in tardigrade taxonomy. The genus phylogeny is also provided, elucidating the phylogenetic position of the newly discovered taxa. Full article
(This article belongs to the Special Issue 2021 Feature Papers by Diversity’s Editorial Board Members)
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