Armiger annandalei (Germain, 1918)

Marinskiy, Vadim V., 2017, Checklist of the freshwater snails (Mollusca: Gastropoda) of Mongolia, Zootaxa 4317 (1), pp. 45-78 : 64

Armiger annandalei (Germain, 1918)

( fig. 6 D, E)

Regional distribution. We identified Armiger annandalei in a Single Sample taken from the Khoit Dalai Nuur lake near Dorgon Settlement (14.07.2012, leg. D.M. PalatoV). There waS a Single Shell of Armiger from the Khar Nuur lake (01.07.1978, leg. S. TSalolikhin) in ZIN collection, identified by L. ProzoroVa aS belonging to A. annandalei . Unfortunately, now thiS Specimen iS loSt and we were unable to examine itS identity.

Extra-limital distribution. A Central ASian SpecieS of Armiger ( LikhareV & StarobogatoV 1967; Schütt 1973; Solem 1979; ProzoroVa & StarobogatoV 1996) diStributed, among otherS, in the waterbodieS of TuVa Republic near to the RuSSian-Mongolian border ( ZaSypkina 2004). The SpecimenS collected in the Khoit Dalai Nuur lake are Virtually identical to A. annandalei from AfghaniStan illuStrated by LikhareV & StarobogatoV (1967) (See fig. 6 D). TheSe authorS alSo proVided Some anatomical data to diStinguiSh between A. annandalei and A. crista .

Morphology. Armiger annandalei iS characterized by a prominent Spire eleVated aboVe the body whorl Surface aS well aS by a particular Sculpture repreSented by not Very prominent and not denSely placed obtuSe ribS (See fig. 6 E). TheSe ribS neVer form SpineS Similar to thoSe obSerVed in Armiger crista (L., 1758)—the type SpecieS of the genuS.

Figures

FIGURE 6. Shells and genitalia of Physidae and Planorbidae discUssed in the paper. A— Physa fontinalis (19.06.2010, a channel of the Kherlen River, leg. Palatov). B— Ph. dalmatina / taslei (09.06.1996, Hövsgöl Lake near Khankh River moUth, leg. Sitnikova, LIN). C— Sibirenauta tuwaensis, a paratype (Eter River, leg. Potanin, ZIN). D— Armiger annandalei, Afghanistan, a sWamp near Vazirabad (after Likharev & Starobogatov 1967, fig. 9). E— A. annandalei from Mongolia (14.08.2012, Khait Dalai NUUr lake, leg. Palatov). F— A. crista (15.08.2012, Dorgon Water reservoir, leg. Prokin). G— Bathyomphalus contortus (15.07.2012, Chono-Khoraikhgol River, leg. Vinarski). H— Choanomphalus mongolicus (20.07.1997, Hövsgöl Lake, leg. Sitnikova, LIN). I, J—Shell, copUlative organ and prostate of Gyraulus chinensis (23.07.2012, Airag NUUr Lake, leg. Vinarski). K— G. sibiricus var. major (1877, Eter River, leg. Potanin, det. Martens, ZIN). Scale bars: 1 mm (A, D – F, H – J), 2 mm (B, C, K). All photos are original, except of I, J (made by Peter Glöer).