Terrestribythinella baidashnikovi Sitnikova, Starobogatov &amp; V. Anistratenko 1992
Creators: name: Anistratenko, V. V.
name: Furyk, Yu. I.
name: Anistratenko, O. Yu.
name: Degtyarenko, E. V.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Littorinimorpha
Bythinellidae
Terrestribythinella
Terrestribythinella baidashnikovi

description: <i>Terrestribythinella baidashnikovi</i> Sitnikova, Starobogatov &amp; V. Anistratenko, 1992 D i s t r i b u t i o n. This regionally endemic species for a long time was known from a few localities in the Transcarpathian Region (Sitnikova et al., 1992). The only one population recently found extra — in the adjacent Ivano-Frankivsk Region (Anistratenko et al., 2017: shell image is given in fig. 3, I–K). By now <i>T. baidashnikovi</i> is recorded in 17 localities of Transcarpathia: 4, 5, 19, 28, 31, 35–37, 41, 47, 49, 52, 54, 57–59 and 61 (fig. 1, table 1). Remarks. Judging by the number of records the species is one of the most widespread snails in the region occuring in the altitude range between 300 and 1100 m a. s. l. (table 2), although they produce the populations of a very low density. Our observations confirm these small gastropods inhabit here in quite particular biotopes: they live rather under and among the litter leaves on banks of water flows than in the water. Riverine biotopes are not characteristic for the species. Few findings in the rivers were made at the mouths of streams, and these molluscs were not observed upstream and downstream of the rivers. <i>Terrestribythinella</i> hold an intermediate position between terrestrial and freshwater environments and apparently do not require significant amounts of liquid water for their existence. It seems they are neither strictly terrestrial, nor strictly water molluscs. This hidden under the leaves biotope is actually amphibiotic and therefore is usually poorly explored by malacologists who collect either freshwater molluscs or land snails. Occurring of <i>Terrestribythinella</i> snails sympatric with terrestrial gastropods on the wet litter leaves or stones reflect their putative amphibiotic ecological preferences (Sitnikova et al., 1992; Anistratenko, 1995; Anistratenko et al., 2017). Interestingly, <i>Terrestribythinella</i>, inhabiting mostly springs and streams, sometimes forms a monospecific mollusc community. This can be proved by finding the caddisfly <i>Crunoe&amp;scy;ia irrorata</i> (Curtis, 1834) larva with a case built entirely of beech leaves and 22 living snails of <i>Terrestribythinella</i> (Martynov et al., 2018).
description: Published as part of <i>Anistratenko, V. V., Furyk, Yu. I., Anistratenko, O. Yu. &amp; Degtyarenko, E. V., 2019, A Review Of Species Diversity, Distribution And Ecology Of Freshwater Gastropod Molluscs Inhabiting The Ukrainian Transcarpathian, pp. 349-374 in Vestnik Zoologii 53 (5)</i> on page 361, DOI: 10.2478/vzoo-2019-0033, http://zenodo.org/record/6949164
description: {"references": ["Sitnikova, T. Ya., Starobogatov, Ya. I., Anistratenko, V. V. 1992. Anatomy and systematic position of some small Pectinibranch (Mollusca Gastropoda) of the European fauna, Vestnik Zoologii, 26 (6), 3 - 12 [In Russian].", "Anistratenko, V. V., Furyk, Yu. I., Degtyarenko, E. V., Anistratenko, O. Yu. 2017. New and little-known freshwater Molluscs of Ukrainian Transcarpathian. Ecologica Montenegrina, 13, 70 - 79.", "Anistratenko, V. V. 1995. A New Species of the Genus Terrestribythinella (Mollusca Gastropoda Pectinibranchia) from Transcarpathian. Vestnik Zoologii, 29 (4), 66 - 68 [In Russian with English summary].", "Martynov, A. V., Anistratenko, V. V., Furyk, Yu. I. 2018. Endemic spring snails Terrestribythinella (Mollusca) as unusual material for larval case of Crunoecia irrorata (Trichoptera: Lepidostomatidae) in Transcarpathian Ukraine. Ecologica Montenegrina, 18, 120 - 125."]}