Monacha (Metatheba) ciscaucasica, Hausdorf, 2000

Hausdorf, Bernhard, 2000, genus Monacha in the Western Caucasus Gastropoda: Hygromiidae), Journal of Natural History 34, pp. 1575-1594 : 1586-1589

publication ID

https://doi.org/ 10.1080/00222930050117495

publication LSID

lsid:zoobank.org:pub:8DC0B4DC-4833-431B-A0FE-F1419998E5EF

persistent identifier

https://treatment.plazi.org/id/03EE8795-FFD5-FFB4-FEC2-76BCFF6244EB

treatment provided by

Carolina

scientific name

Monacha (Metatheba) ciscaucasica
status

sp. nov.

Monacha (Metatheba) ciscaucasica View in CoL , sp. n.

(®gures 5, 14, 19)

Helix carthusiana [sic], Kaleniczenko 1853: 83 [partim, non O. F. MuÈller, 1774].

Helix frequens, Mousson 1863: 318 [partim, non Mousson, 1859].

Helix frequens, Rosen 1911: 101 [partim, non Mousson, 1859].

Theba orientalis roseni Hesse, 1914: 263 [partim, non Hesse, 1914].

Shell (®gure 5). Depressed conical±globular; with 4×±5× convex whorls; teleoconch with wrinkled growth-ridges and Ô distinct incised spiral striae; whitish or light corneous, then a whitish peripheral band might be discerned; body whorl rounded; aperture elliptical or almost circular; upper insertion of the peristome usually slightly descending; peristome sharp, not expanded, with a whitish internal rib; umbilicus narrow, slightly obscured by the reēcted columellar edge.

Measurements. Pyatigorsk, Mashuk Gora (n 5 20): D: 8.3±13.9 mm, x Å 5 11.4 mm; H: 5.7±9.4 mm, x Å 5 7.6 mm; D/H: 1.43±1.58, x Å 5 1.50.

Genitalia (®gure 14). The penial papilla is Ô conical or almost cylindrical. The two glandulae mucosae are simple or little rami®ed. The bursa of the bursa copulatrix is Ô oval. The right ommatophoral retractor crosses with the penial retractor. The measurements of some sections of the genitalia are compiled in table 3 and the variation of the proportions of some sections of the genitalia is compiled in table 4.

Remarks. Monacha ciscaucasica cannot be distinguished from M. (Paratheba) roseni by shell characters. The umbilicus of M. ciscaucasica is narrower than the umbilicus of M. subcarthusiana , but wider than the umbilicus of M. perfrequens .

The genitalia of M. ciscaucasica diOEer from the other Caucasian Metatheba species , e.g., in the length of the penial papilla which is in relation to the epiphallus longer than in M. subcarthusiana , but shorter than in M. perfrequens .

Etymology. Because of the occurrence in Ciscaucasia.

Type locality. Russia: Pyatigorsk , Mashuk Gora, LP47 .

Distribution and material (®gure 19). So far M. ciscaucasica is only known from the surroundings of Pyatigorsk in the Northern Caucasus. Only the specimens from the Mashuk Gora are paratypes.

Russia. Pyatigorsk , Mashuk Gora, LP47 (det. anat.; holotype ZMH 2771 View Materials , leg. E. Clauss, measurements: D 5 12.9 mm, H 5 8.8 mm; CLA; SMF 278702 About SMF ; ZMH 2770 View Materials ); Pyatigorsk, LP47 (paralectotype s of roseni: SMF 6605; ZMZ 505714 (partim?) specimens to Mousson 1863; SMF 69919, 69927 About SMF , 98770 About SMF ; ZIRAN; ZMUM 4519 View Materials , 8424 View Materials ) .

( Metatheba ) species. Abbreviations: ep5 epiphallus; ¯ 5 ¯agellum; p 5 penis; pp5

penial papilla; v 5 vagina up to the glandulae mucosae; v 5 total length of the

gm t

vagina.

SMF

Forschungsinstitut und Natur-Museum Senckenberg

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Hygromiidae

Genus

Monacha

Loc

Monacha (Metatheba) ciscaucasica

Hausdorf, Bernhard 2000
2000
Loc

Theba orientalis roseni Hesse, 1914: 263

HESSE, P. 1914: 263
1914
Loc

Helix frequens, Rosen 1911: 101

ROSEN, O. VON 1911: 101
1911
Loc

Helix frequens, Mousson 1863: 318

MOUSSON, A. 1863: 318
1863
Loc

Helix carthusiana

KALENICZENKO, J. 1853: 83
1853
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