Orientogalba hookeri (Reeve, 1850)

Marinskiy, Vadim V., 2017, Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia, Zootaxa 4317 (1), pp. 45-78 : 60

Orientogalba hookeri (Reeve, 1850)

( fig. 5 J )

Regional distribution. O. hookeri iS Very common in Mongolia being a typical dweller of floodplain marSheS, Shallow ephemeral poolS and Similar non-permanent waterbodieS. It occurS throughout the country, except for itS Southern part.

Extra-limital distribution. Central ASia, including Southern regionS of Siberia and the Amur RiVer baSin ( VinarSki & Kantor 2016). The type locality of O. hookeri iS “Sikkim Himalaya” ( Hubendick 1951).

Remarks. There are three riVal ideaS on the taxonomic identity of thiS SpecieS. Some authorS (Glöer & Bößneck 2013; Glöer et al. 2014) See it aS a Central ASian mountain SpecieS of Radix occurring, among otherS, in Nepal and KyrgyzStan, whereaS Subba Rao (1989) placed it into the genuS Galba Schrank, 1803 . KrugloV & StarobogatoV (1993b) claSSified it aS a member of the (Sub-)genuS Orientogalba KrugloV et StarobogatoV, 1985, that iS allied to but not identical with Radix . Yen (1942) could not find the type SpecimenS of Lymnaea hookeri in the BritiSh MuSeum, whereaS Hubendick (1951, pl. IV, fig. 18) publiShed a photo of the ‘type’ Shell (? holotype) of thiS SpecieS.

Here, we proViSionally follow KrugloV & StarobogatoV (1993b) conception of thiS SpecieS.

Limnaeus pervius MartenS, 1867, recorded from Mongolia and adjacent regionS of Central ASia (MartenS 1882; Liu Yueyin 1979), iS probably, a junior Synonym of O. hookeri SenSu KrugloV & StarobogatoV ( VinarSki 2016a).

Figures

FIGURE 5. Shells of the lymnaeid snails discUssed in the paper (continUation). A— Limnaea auricularia morpha kosogolensis, a syntype (ZIN, leg. Mikhno, det. Lindholm). B— Radix obliquata (06.1978, Uvs NUUr Depression, an Unnamed lake, leg. Lobachev, ZIN). C— R. lagotis (01.08.2011, Khar NUUr Lake, UnknoWn collector, LIN). D— R. obliquata, shell spire, enlarged (19.07.2012, Khar Us NUUr Lake, leg. Vinarski). E— R. zazurnensis (21.07.1990, KhUrkh River in the Onon River basin, leg. DUlmaa, ZIN). F— Lymnaea nogoonica, the holotype (22.08.1978, a lake near Kosh-Agach settlement near the RUssian- Mongolian border, leg. Starobogatov, ZIN). G— L. tsalolikhini, the holotype (27.06.1978, a bay of the Nogoon Lake, leg. Tsalolikhin, ZIN). H— R. tumida (23.07.2012, branch of a river infloWing to the Airag NUUr Lake, leg. Vinarski). I— Orientogalba viridis (20.08.1976, Khovd River, leg. Zhaltsanova). J— O. hookeri (10.06.1987, Bayan NUUr Lake, 80 km E from the Uvs NUUr Lake, leg. Tsalolikhin, ZIN). K— R. kurejkae (27.06.1978, a bay of the Nogoon Lake, leg. Tsalolikhin, ZIN). Scale bars: 2 mm (A, C, E – K), 5 mm (B). All photos are original, except of I (photo made by Ivan Nekhaev).