Myxas glutinosa (O.F. Mueller , 1774)

Vinarski, Maxim V., Aksenova, Olga V. & Bolotov, Ivan N., 2020, Taxonomic assessment of genetically-delineated species of radicine snails (Mollusca, Gastropoda, Lymnaeidae), Zoosystematics and Evolution 96 (2), pp. 577-608 : 577

22. Myxas glutinosa (O.F. Mueller, 1774) Fig. 9E ; Table 3.

Buccinum glutinosum O.F. Müller 1774: 129.

Amphipeplea dupuyi Locard 1893: 30.

Amphipeplea mabillei Locard 1893: 30.

Lymnaea glutinosa - Hubendick 1951: 148, fig. 333.

Lymnaea (Myxas) dupuyi - Kruglov and Starobogatov 1985b: 74, figs 1(3), 2(3); 1993b: 171, fig. 9D (partim).

Lymnaea (Myxas) glutinosa - Kruglov and Starobogatov 1985b: 73, figs 1(2), 2(2); 1993b: 171, fig. 9B (partim).

Lymnaea (Myxas) mabillei - Kruglov and Starobogatov 1985b: 71, figs 1(1), 2(1); 1993b: 171, fig. 9A (partim).

Myxas glutinosa - Glöer 2002: 220, fig. 248; Welter-Schultes 2012: 50, textfig.; Vinarski and Kantor 2016: 316; Glöer 2019: 249, fig. 310.

TL.

Not stated in the original description. Most probably, the type locality should be quoted as Fridrichsdal, a suburb of Copenhagen, Denmark (see Nekhaev et al. 2015 for details).

Types.

Lost ( Nekhaev et al. 2015).

The taxonomic position and identity of this morphologically-peculiar species have not raised many doubts and most authors treated it more or less identically ( Hubendick 1951; Glöer 2002; Welter-Schultes 2012; but see Kruglov and Starobogatov 1993b). The results of our study well correspond to the commonly-accepted concept of M. glutinosa . Shell of this species is very fragile, semi-pellucid and, in a living animal, it is completely covered by the reflected mantle. Shell shape is almost globose, with greatly expanded aperture and very diminished spire (in some specimens, it is almost invisible).

The structure of the copulatory apparatus of M. glutinosa , as is described by various authors ( Hubendick 1951; Kruglov and Starobogatov 1985b; Jackiewicz 1998), is virtually indistinguishable from that of the genera Ampullaceana and Peregriana . However, the length of the spermathecal duct is different (long in Myxas , very short or almost absent in Ampullaceana and Peregriana ).

The range of M. glutinosa covers Europe (except of the southern and northern parts), the Urals, Western and Central Siberia ( Khokhutkin et al. 2009; Welter-Schultes 2012; Vinarski et al. 2013).

Figures

Figure 9. Shells of species of the genera Ampullaceana, Kamtschaticana, Myxas, Tibetoradix, Racesina, Orientogalba and Bullastra. A. Ampullaceana relicta relicta (05.1975, Macedonia, a spring near St. Naum monastery, Ohrid Lake region; NHMW). B. A. r. pinteri, a paratype (05.06.1973, Macedonia, Prespa Lake near Perovo; MHMW). C, D. Kamtschaticana kamtschatica (Russia, Kamchatka Peninsula, Valley of Geysers; RMBH). E. Myxas glutinosa (14.09.1963, Kazakhstan, floodplain of the Tobol River near Kustanay City; ZISP). F, G. Tibetoradix hookeri, two syntypes (NHMUK). H. T. kozlovi, the holotype (ZISP). I. Racesina luteola (India, Bengal, Paksay, Pabna; NHMUK). J. R. oxiana (04.07.2016, Tajikistan, a roadside ditch near Kurban-Shakhid village; LMBI). K. R. siamensis (" Thailand "; ZMB). L. Orientogalba viridis, a syntype (Guam Island; NMNH). M. O. ollula (1883, Japan, Yokohama; NHMUK). N. Limnaea bowelli, a type (after Preston 1909). O. Orientogalba cf. bowelli (30.06.1924, China, Tibet, Lingka, 14,500 feet a. s. l.; NHMUK). P. Bullastra cumingiana (Philippine, Cebu Island; NHMUK). Scale bars: 2 mm (C, D, F-H, L, M, O), 5 mm (A, B, E, J-K, N, P).