Research output: Contribution to journal › Article › peer-review
Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus. / Туманов, Денис Владимирович; Андросова, Евгения Дмитриевна; Гавриленко, Марина Дмитриевна; Калимуллин, Айдар Азатович.
In: European Journal of Taxonomy, Vol. 947, No. 1, 30.07.2024, p. 20–52.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus
AU - Туманов, Денис Владимирович
AU - Андросова, Евгения Дмитриевна
AU - Гавриленко, Марина Дмитриевна
AU - Калимуллин, Айдар Азатович
PY - 2024/7/30
Y1 - 2024/7/30
N2 - In this study, we describe two new species of Mesobiotus based on morphological data collected through light and scanning electron microscopy. Descriptions include DNA sequences of four commonly used molecular markers (18S rDNA, 28S rDNA, ITS-2, and COI). Mesobiotus efa sp. nov. was discovered in North-West Russia and belongs to the group of species with smooth cuticle, harmsworthi-type OCA, typical Mesobiotus claws IV with unindented lunules, and egg chorion with reticulated processes in form of ‘sharp wide cones’ or ‘cones with long slender endings’, egg process bases with well-developed crone of dark thickenings without finger-like projections, and egg shell surface between the processes with ridges without reticulation, areolation or semi-areolation. It can be distinguished from all know species of this group by a unique combination of morphological and morphometric characters. Mesobiotus vulpinus sp. nov. was found in the Russian Far East, and is similar to Mesobiotus mauccii by having an egg chorion with polygonal relief. The new species can be distinguished from M. mauccii by having a narrower buccal tube, by details of oral cavity armature, and by longer egg chorion processes. Furthermore, we provide results of the phylogenetic analyses of the genus Mesobiotus conducted in this study.
AB - In this study, we describe two new species of Mesobiotus based on morphological data collected through light and scanning electron microscopy. Descriptions include DNA sequences of four commonly used molecular markers (18S rDNA, 28S rDNA, ITS-2, and COI). Mesobiotus efa sp. nov. was discovered in North-West Russia and belongs to the group of species with smooth cuticle, harmsworthi-type OCA, typical Mesobiotus claws IV with unindented lunules, and egg chorion with reticulated processes in form of ‘sharp wide cones’ or ‘cones with long slender endings’, egg process bases with well-developed crone of dark thickenings without finger-like projections, and egg shell surface between the processes with ridges without reticulation, areolation or semi-areolation. It can be distinguished from all know species of this group by a unique combination of morphological and morphometric characters. Mesobiotus vulpinus sp. nov. was found in the Russian Far East, and is similar to Mesobiotus mauccii by having an egg chorion with polygonal relief. The new species can be distinguished from M. mauccii by having a narrower buccal tube, by details of oral cavity armature, and by longer egg chorion processes. Furthermore, we provide results of the phylogenetic analyses of the genus Mesobiotus conducted in this study.
KW - Egg ornamentation
KW - Far East
KW - Macrobiotidae
KW - Mesobiotus mauccii
KW - North-West
KW - morphology
KW - new species
KW - tardigrades
UR - https://www.mendeley.com/catalogue/52d46758-2076-35e1-877b-e617a9111f1b/
U2 - 10.5852/ejt.2024.947.2619
DO - 10.5852/ejt.2024.947.2619
M3 - Article
VL - 947
SP - 20
EP - 52
JO - European Journal of Taxonomy
JF - European Journal of Taxonomy
SN - 2118-9773
IS - 1
ER -
ID: 124124967