Liostomia afzelii Warén, 1991

Høisaeter, Tore, 2014, The Pyramidellidae (Gastropoda, Heterobranchia) of Norway and adjacent waters. A taxonomic review, Fauna norvegica 34, pp. 7-78 : 51

Liostomia afzelii Warén, 1991

Figures 84 , 89

Liostomia afzelii sp.n. - Warén, 1991:106

Liostomia afzelii Warén - Cachia et al. 2001 ; Schander et al. 2003; Høisaeter 2009

Odostomia afzelii (Warén) - Peñas et al. 1996

Liostomia clavula (Lovén) - G.O. Sars 1878 (according to Warén 1991)

Odostomia (Liostomia) clavula - van Aartsen (1987) [in part]

Type material: Holotype and numerous syntypes SMNH 4096 and 4097.

Type locality: Swedish west coast, Koster area, south of Lilleskär, 30-40 m.

Material seen: Norway - Skagerrak, 7 spms; Møre og Romsdal 2 spms - Shetland 1 sh ( ZMBN 28 638, Friele don., Jeffreys det. Ptychostomon clavulum Lov. ).

Biology: Not known.

Diagnosis: Shell: Soft parts: Not known. Operculum: Not known.

Distribution: A single specimen from Korsfjorden 150-300 m, mentioned as additional material in the original description, is the only previous Norwegian record. According to Warén (1991) the record of L. clavula in G.O. Sars (1878) from Lofoten (c. 68°N) should definitely be referred to L. afzelii . In my material two specimens and three shells from Møre og Romsdal. The two specimens are from a species rich sample from Breisunddjupet (62°29’N, 120- 60 m, shell sand). Seven specimens in the material from Skagerrak also most likely belong to L. afzelii . Apparently more common in the Skagerrak area than further north. Outside Norway it is known from western Sweden, Shetland and off Tunis in Tunisia ( Warén 1991). Reported from the western Mediterranean by Peñas et al. (1996). Also reported from the Turkish coast (Öztürk et al. 2013).

Remarks: Separated from L. clavula by Warén (1991). Not recognized as a separate species by van Aartsen. See further Figure 89, and Remarks under L. clavula below.

Figures

Figure 84. Liostomia afzelii. A specimen from Fevikkilen, Grimstad, 58°22.1’N, 08°40.9’E, 25 m, 1.9 mm (S 10-88) (left) and one from Bay outside Vaholmen, Grimstad, 58°20’N, 08°38.6’E, 40 m, 1.15 mm (G 123-71). Figure 85. Liostomia clavula. A specimen from Haramsfjorden, 62°36.6’N, 06°17.2’E, 42 m, 1.85 mm (ZMBN 83262), and the protoconch of the specimen in Figure 86. Figure 86. Liostomia eburnea. Two specimens from Varangerfjorden. Specimen at left, from Warén 1991, 4.6 mm, the shell at right also from Varengerfjorden, 2.6 mm (ZMBN 28182). Figure 87. Liostomia hansgei. A specimen from Fanafjorden, NW of Korsneset, 60°13’N, 05°14’E, 220-230 m, 2.25 mm (ZMBN 83265). Figure 88. Liostomia hansgei. Head-foot complex and pigmented mantle organ. Figure 89. A specimen of (from left to right) L. hansgei Fanafjorden, NW of Korsneset, 60°13’N, 05°14’E, 220-230 m, 2.25 mm (ZMBN 83265), L.azfzelii from Fevikkilen,Grimstad, 58°22.1’N, 08°40.9’E, 25 m, 1.65 mm (S 10-88), and L. clavula from Fraenafjorden (Møre og Romsdal), 62°50.3’N, 07°05.5’E, 62-50 m, 1.58 mm (ZMBN 83264).