Ena nogellii ( Roth, 1850 )

Hausdorf, B, 2001, The genus Ena in Turkey, with remarks on its phylogenetic relationships (Gastropoda: Buliminidae), Journal of Natural History 35, pp. 1627-1638 : 1629-1634

Ena nogellii ( Roth, 1850)

(gures 1, 2, 5, 8, 13)

Bulimus Nogellii R oth, 1850: 341. Terra typica : ‘K olchis’.

Bulimus Nogelli [sic]: L. PfeiOEer, 1856: 56, pl. 16 gures 7, 8.

Buliminus (Petraeus) ponticus Retowski, 1886: 28 , pl. 1 gure 9. Locus typicus: unknown (published in 1886 according to Westerlund, 1887: 30).

Buliminus (Napaeus) ponticus: Westerlund, 1887: 30 .

Buliminus (Petraeus) Nogelli [sic]: Westerlund, 1887: 61.

Buliminus (Napaeus) ponticus : K obelt, 1888: 33, pl. 99 gure 564.

Buliminus (Napaeus) ponticus : R etowski, 1889: 249.

Ena (Ena) nogelli [sic]: Forcart, 1940: 129 [partim], gure 2, pl. 1 gure 3.

Chondrula (Mastus) pontica: Forcart, 1940: 248 , pl. 3 gure 82.

Ena (Ena) nogelli [sic]: G ittenberger, 1967: 137.

Shell (gures 1, 2). Elongated oval; with 7–8.25 slightly in ated whorls; moderately thick-walled; teleoconch with coarse growth ridges crossed by irregular incised spiral striae producing a granulated sculpture; brownish corneous; subtranslucent; the body whorl does not ascend towards the aperture; aperture oval, edentate; peristome slightly expanded, re exed and moderately thickened on the inside; palatal insertion of the peristome connected with the columellar edge by a thin callus; rimate or umbilicus open.

Measurements. Various localities (n 530): D: 5.2–6.7 mm, mean 55.7 Ô 0.3 mm; H: 13.0– 21.8 mm, mean 515.3 Ô 1.8 mm; D /H: 0.307 –0.408, mean 50.374 Ô 0.025.

Genitalia (gures 5, 8). The penial appendix inserts at the distal section of the penis. The appendix sections A, A and A are distinctly delimited, whereas there 1 2 3

is no marked boundary between the sections A and A. The appendix retractor 4 5

inserts at the proximal half of section A. The penial retractor inserts at the proximal 1

section of the penis. Both retractors insert close to each other at the diaphragm. An imperforate penial papilla inserts at the proximal end of the penis. There is a short groove in the proximal part of the penial papilla facing the opening of the epiphallus. There is a longitudinal fold at each side of the penial papilla. The two folds converge and become higher towards their distal ends, which are detached from the penis wall. Opposite to these structures, there are two indistinct longitudinal ridges, which run towards the opening of the epiphallus. Besides, the penial wall is irregularly sculptured. There is a spur-shaped caecum at the middle section of the very long epiphallus. The agellum is moderately short. The vagina is shorter than the penis. The free oviduct is longer than the vagina. The diverticulum of the bursa copulatrix is more than twice as long as the bursa and its duct proximally of the branching point. km 20

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Remarks. According to Forcart (1940: 118), Ena nogellii and Chondrula pontica diOEer in the ratio D /H. Ena nogellii is said to be characterized by a ratio lower than 0.345, whereas the ratio is said to be greater than 0.345 in Chondrula pontica . In 30 specimens measured for this study, the ratio D/H varies almost continuously between 0.307 and 0.408. There are no constant diOEerences between the specimens identi ed as Ena nogellii and those identi ed as Chondrula pontica by Forcart (1940). The two gures of R etowski (1886: pl. 1 gure 9) which Forcart (1940) identi ed as the two distinct species show only a smaller and a larger specimen of Ena nogellii .

In Forcart’s (1940: gure 2) gure of the genitalia of Ena nogellii the diverticulum of the bursa copulatrix is shorter than the bursa and its duct proximally of the branching point. A re-examination of Forcart’s specimen has shown that the diverticulum is torn oOE. The rest of the diverticulum is still attached to the spermoviduct. M oreover, the position of the atrium is not correctly indicated in the gure; therefore the vagina appears very long.

Most of the 12 examined syntypes of B. ponticus Retowski, 1886 (IZPAN; SMF 63752, 63753, 63754, 103922) belong to Ena nogellii . However, one of the specimens in the Retowski collection in the IZPAN belongs to a Mastus species. Therefore, a lectotype of B. ponticus Retowski, 1886 (IZPAN, coll. Retowski, measurements: D 55.6 mm, H 514.6 mm) has been designated to clarify the application of that name.

Napaeus ponticus var. rugosus Westerlund, 1897 has no a nities to Ena nogellii . A syntype (Naturhistoriska Museet in Göteborg, NMG 1894) (probably the holotype) belongs to a Mastus species from Crete (R. A. Bank, personal communication). Consequently, the type locality given by Westerlund (1897), ‘Tauria’ (5 Crimea), must be wrong.

Distribution and material (gure 13). Ena nogellii is widespread in the Pontic region of Turkey between the V. Bolu in the west and the V. Giresun in the east.

Ena nogellii certainly does not live in ‘K olchis’. Euxinastra iberica ( Roth, 1850) , which is described in the same publication with the wrong distribution record ‘G eorgien’, is known only from the Vilayets Samsun and Ordu ( Bank and Menkhorst, 1994). I suppose that both species were collected by M. Wagner near Samsun, where his ship landed on its way to the Caucasus.

V. Bolu: Cinler 1.5 km towards M udurnu, U K 38 (det. anat.; H AU); K aynaşlõ, U L51 (M EN); BoludagÏõ G eçidi, 900 m alt., U L61 (det. anat.; M EN); K aracasu, 750 m alt., UL80 (IZPAN); Eskiçaga 3 km towards Mengen, VL 22 (HAU). V. Zonguldak: 10 km NNE Kocanoz between Safranbolu and Bartõn, VL59 (NNM); Amasra 4 km towards Cide, VM 52 (HAU; ZMH 2809). V. Kastamonu: Kapõsu 3.5 km towards Cide, VM 83 (det. anat.; HAU); Cide 4 km towards IÇnebolu, WM03 (HAU); Azdavay 2 km towards Ulus, WM 20 (HAU); Belyaka near DogÏanyurt 0.5 km towards Cide, WM35 (det. anat.; HAU). V. Sinop: Türkeli 20 km towards Sinop, XM 23 (NBE); Sinop, XM 75 (SM F 14489, specimens to R etowski, 1889); 16 km SE of Gerze, 100 m alt., XM 91 (MEN). V. Samsun: Çukurbük, 450 m alt., BF 65 (det. anat.; NMB 4480b, specimens to Forcart, 1940); Samsun 15 km towards H avza, 400 m alt., BF66 (N M B 4516a, specimens to Forcart, 1940); 17 km SW of Samsun, BF 66 (M EN); Samsun, BF77 (SM F 14488, 103923, 103924, specimens to R etowski, 1889 and Forcart, 1940); Tekkeköy, BF 86 (det. anat.; F MNH 279868; IZPAN); D ervent Burnu, 10 m alt., BF 87 (N M B 4480a, specimens to Forcart, 1940); Yenice 25 km SSW of Çarşamba, CF 04 (IZPAN). V. Ordu: Curiköyü 7 km W of Ü nye, CF 55 (N N M, specimens to G ittenberger, 1967); Ü nye, CF 55 (M EN). V. G iresun: 5 km N of Tamdere, D E48 (M EN). V. Tokat: Turhal, BE57 (M EN).

‘K olchis’ (holotype of B. nogellii Roth : ZSM 19960564). Debris of the Black Sea near K oktebel, Crimea (lectotype (design. nov.) of B. ponticus R etowski: IZPAN; paralectotypes of B. ponticus: IZPAN ; SMF 63752, 63753, 63754, 103922).