Euglesa lindholmi Bespalaya & Vinarski & Aksenova & Babushkin & Gofarov & Kondakov & Konopleva & Kropotin & Mabrouki & Ovchankova & Palatov & Sokolova & Shevchenko & Travina & Taybi & Soboleva & Zubrii & Bolotov 2024, comb. nov.
Creators: name: Bespalaya, Yulia V.
name: Vinarski, Maxim V.
name: Aksenova, Olga V.
name: Babushkin, Evgeniy S.
name: Gofarov, Mikhail Yu.
name: Kondakov, Alexander V.
name: Konopleva, Ekaterina S.
name: Kropotin, Alexander V.
name: Mabrouki, Youness
name: Ovchankova, Nadezda B.
name: Palatov, Dmitry M.
name: Sokolova, Svetlana E.
name: Shevchenko, Alexander R.
name: Travina, Oksana V.
name: Taybi, Abdelkhaleq F.
name: Soboleva, Alena A.
name: Zubrii, Natalia A.
name: Bolotov, Ivan N.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Bivalvia
Sphaeriida
Sphaeriidae
Euglesa
Euglesa lindholmi

description: Euglesa lindholmi (Starobogatov & Streletzkaja, 1967) comb. nov.
(Fig. 9C)
Odhneripisidium lindholmi Starobogatov & Streletzkaja, 1967: 256, fig. 69.
Type series: The holotype (a separate valve) and three separate valves of paratypes are deposited in ZIN, nos 1 and 2 in the systematic catalogue.
Type locality: Russia, Republic of Yakutia (Sakha), Quaternary deposits on the left bank of the Allaikha River (Indigirka River Basin).
Material examined: North Asia: Gydan Peninsula, VII.2017, Sokolova & Shevchenko leg., Republic of Yakutia, Yana River Basin, VIII.2019, Zubrii leg., Republic of Buryatia, near Vitim Nature Reserve, Dannoe Lake, VIII.2020, Babushkin leg., in total 29 specimens (lot nos RMBH MSph-737, MSph-370, MSph-569/1, MSph-569/2, MSph-572/1).
Description: The shell is small (mean shell length ± SD 3.15 ± 0.03 mm), round-oval in shape (Fig. 9C). The beaks are rounded and prominent, and somewhat offset to the posterior edge of the valves (Fig. 9C). The cardinal tooth of the right valve is thickened on the posterior end. The inner cardinal tooth of the left valve is straight. The outer cardinal tooth of the left valve is thickened, shorter than inner cardinal tooth (Fig. 10C).
Comments: The 16S and 28S rRNA sequences of this species have no analogues in GenBank and are more closely related to the E. parvula group (Fig. 2). Previously, several species described from the basin of the Indigirka and Kolyma rivers and also from the Kamchatka Peninsula were assigned to the genus Hiberneuglesa Starobogatov in Dolgin, 1983 (Korniushin 1996, Vinarski and Kantor 2016) with the exception of Euglesa subconventa (Starobogatov & Streletzakaja, 1967), Pisidium indigircence Starobogatov & Streletzkaja, 1967, and Euglesa cor (Starobogatov & Streletzkaja, 1967). Currently, this group is treated as the species E. parvula (Graf and Cummings 2023; MolluscaBase 2023) with the junior synonyms: Euglesa anjuica Starobogatov & Korniushin, 1989, Euglesa kolhymensis (Starobogatov & Streletzkaja, 1967), Euglesa kuiperi (Starobogatov & Streletzkaja, 1967), Euglesa lindholmi (Starobogatov & Streletzkaja, 1967), and several species from other regions. Euglesa cor is currently considered as a junior synonym of Euglesa obtusalis (Lamarck, 1818) (Graf and Cummings 2023; MolluscaBase 2023). These species are still known only from their type specimens (represented by dried shells). We have studied the type specimens and the original descriptions of all of these species (Supporting Information, Fig. S1K, N–Q). According to morphological features of these type series, and morphological and molecular-genetic analysis of the examined material (see above), we believe that the listed nominal species should be treated as E. lindholmi. The taxonomic status of E. anjuica, E. cor, E. kolhymensis, E. kuiperi, E. subconventa, and Pisidium indigircence needs to be clarified.
Distribution: Siberia.
description: Published as part of Bespalaya, Yulia V., Vinarski, Maxim V., Aksenova, Olga V., Babushkin, Evgeniy S., Gofarov, Mikhail Yu., Kondakov, Alexander V., Konopleva, Ekaterina S., Kropotin, Alexander V., Mabrouki, Youness, Ovchankova, Nadezda B., Palatov, Dmitry M., Sokolova, Svetlana E., Shevchenko, Alexander R., Travina, Oksana V., Taybi, Abdelkhaleq F., Soboleva, Alena A., Zubrii, Natalia A. & Bolotov, Ivan N., 2024, Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae), pp. 305-338 in Zoological Journal of the Linnean Society 201 (2) on pages 327-328, DOI: 10.1093/zoolinnean/zlad139, http://zenodo.org/record/13220074