Two new species of Hecuba Schumacher, 1817 (Bivalvia: Donacidae)

Author: J.G.M. Raven
Basteria, 88 (1): 1-5Published:

Abstract

In addition to the three extant species of Hecuba Schumacher, 1817 discussed in Raven & Dekker (2022, Basteria, 86 (2): 96-113) a fourth extant species occurs in eastern Sumatra, Indonesia, herein described as Hecuba parva spec. nov. A fossil from the Miocene of India is herein described as H. mukerjeei spec. nov. The type species of Hecuba is corrected to Venus scortum Linnaeus, 1758. A correction is made regarding the reference to Rumphius in Raven & Dekker (2022).

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Download articleArtikel Two new species of <em>Hecuba</em> Schumacher, 1817 (Bivalvia: Donacidae)

Revision of the genus Simplicula stat. nov. (Stylommatophora: Canariellidae) from the eastern Canary Islands, with the description of seven new taxa

Authors: K. Groh, R. Hutterer, E. Martín González
Basteria, 88 (1): 6-24Published:

Abstract

The subgenus Simplicula Ponte-Lira & M. R. Alonso, 1997 in the genus Canariella P. Hesse, 1918 is elevated to the rank of a genus and seven new fossil taxa of the group are described from Pliocene and Pleistocene to Holocene deposits from the North of Lanzarote, La Graciosa, and the North, West and Northwest of Fuerteventura, Canary Islands. Their relationship to other taxa of the family Canariellidae on the Canary Islands and in the West-Mediterranean region as well as with fossil species from continental Europe placed in the genus Canariella is discussed.

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Download articleArtikel Revision of the genus <em>Simplicula</em> stat. nov. (Stylommatophora: Canariellidae) from the eastern Canary Islands, with the description of seven new taxa

Some notes on the genus Schileykiella Manganelli, Sparacio & Fo. Giusti, 1989 (Gastropoda, Helicoidea: Canariellidae) from Tunisia and Libya

Authors: F. Liberto, A. Abusneina, A. Gregorini, M. Colomba
Basteria, 88 (1): 25-28Published:

Abstract

Building on the recent re-allocation of Helix sordulenta to the genus Schileykiella, this paper provides further insights into the taxonomy, palaeontology, and distribution of Schileykiella in North Africa. Additionally, the taxon Helix mendicaria L. Pfeiffer, 1860, described from Tunisia, is here proposed as a junior synonym of Schileykiella sordulenta (Morelet, 1851), and the taxon Xerophila chadiana darnensis Hey, 1955, described from Derna (Cyrenaica, Libya), is identified as a possible congeneric fossil species.

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Download articleArtikel Some notes on the genus <em>Schileykiella</em> Manganelli, Sparacio & Fo. Giusti, 1989 (Gastropoda, Helicoidea: Canariellidae) from Tunisia and Libya

Four new fossil Napaeus species (Gastropoda: Enidae) from La Gomera (Canary Islands)

Author: C.J.P.J. Margry
Basteria, 88 (1): 29-37Published:

Abstract

Four fossil species of Napaeus from various parts of the Canary Island of La Gomera are new to science. The species are described and compared with other species of this genus. Including these four species, there are now 31 Napaeus species known from La Gomera and 76 species from the whole Canary archipelago. La Gomera is as such by far the most diverse island with respect to Napaeus.

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Download articleArtikel Four new fossil Napaeus species (Gastropoda: Enidae) from La Gomera (Canary Islands)

Liralithes, a new genus of Clavalithidae (Neogastropoda) from the Indo-West Pacific, with comments on the late evolution of apertural lirae

Authors: G.J. Vermeij, J.G.M. Raven, M. Harzhauser
Basteria, 88 (1): 38-42Published:

Abstract

In the Clavilithidae Vermeij & M. A. Snyder, 2018, here raised from subfamily to family status in Neogastropoda, we name Liralithes gen. nov. (type species: Fusus tjidamarensis K. Martin, 1879) from the Early Miocene to Early Pleistocene of the Indo-Malayan region. It differs from other clavilithids by having lirae on the inner side of the outer lip and by having columellar folds. Lirae evolved very late in this family as well as in Muricidae, Fasciolariidae (Fusininae), Melongenidae, and Dolicholatiridae. In Dolicholatiridae, the genus Latirofusus Cossmann, 1889 (lirae absent) from the Paleocene and Eocene differs from the post-Eocene Dolicholatirus Bellardi, 1884 (lirae present).

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Download articleArtikel <em>Liralithes</em>, a new genus of Clavalithidae (Neogastropoda) from the Indo-West Pacific, with comments on the late evolution of apertural lirae

The family Architectonicidae J. E. Gray, 1850 (Gastropoda: Heterobranchia) from the lower Serravallian of Rohožník (Vienna Basin, Central Paratethys): new evidence and description of a new species

Author: R. Biskupič
Basteria, 88 (1): 43-53Published:

Abstract

This work presents new records of the Architectonicidae from the middle Miocene of the Central Paratethys Sea. The shells were obtained from the lower Serravallian (upper Badenian) marine sediments revealed at the fossiliferous site Rohožník – Konopiská, situated in the eastern Vienna Basin (Slovakia). The herein surveyed architectonicids comprise two species, of which Nipteraxis transmontanus spec. nov. is established as new, and Spirolaxis cornicula (O. Boettger, 1902) is recorded for the first time from Slovakia, representing the first occurrence of the species in the upper Badenian of the Central Paratethys realm. Paleoecology of both taxa is shortly commented on and compared with the habitat preferences of similar species. In the benthic assemblages at Konopiská, the architectonicids were associated with ahermatypic scleractinian corals, which most probably represented their potential hosts.

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Download articleArtikel The family Architectonicidae J. E. Gray, 1850 (Gastropoda: Heterobranchia) from the lower Serravallian of Rohožník (Vienna Basin, Central Paratethys): new evidence and description of a new species

The Cochlostomatidae of Northern Africa (Gastropoda, Caenogastropoda)

Authors: I. Abbes, I. Kawther Ezzine, E. Neubert
Basteria, 88 (1) 54 - 67Published:

Abstract

A comprehensive survey on the Cochlostomatidae from Northern Africa is given, based on a critical examination of the type specimens of the described nominal taxa. As a result, five species are accepted to occur in Northern Africa: Cochlostoma letourneuxi (Bourguignat, 1866) from Tunisia and Algeria, C. atlanticum (Bourguignat, 1868) from Algeria, C. barcaense Brandt, 1958 and C. susaense Brandt, 1958 from Libya and Obscurella marocanum (Pallary, 1928) from Morocco. New records of C. letourneuxi for Tunisia are provided. The shell of each species is described and illustrated, synonyms are listed, and a distribution map is provided. A lectotype is selected for Pomatias letourneuxi; Pomatias tunetanus is selected as type species for Tunetana A. J. Wagner, 1897.

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Download articleArtikel The Cochlostomatidae of Northern Africa (Gastropoda, Caenogastropoda)

First record of a population of Hygromia limbata (Draparnaud, 1805) in the Benelux (Gastropoda: Hygromiidae)

Authors: L. Bronne, J. Delcourt
Basteria, 88 (1): 68-75Published:

Abstract

A population of the Hedge snail Hygromia limbata was found in eastern Belgium (Lontzen) in March 2023. Live individuals of various age classes, along with numerous empty shells, were found in a residential area including two yards of a building materials shop. With other recent new sightings in the northern portion of its range, this find expands the distribution range of the species northwards. It also increases the list of terrestrial gastropod species of southern European origin settling in the Benelux.

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Download articleArtikel First record of a population of <em>Hygromia limbata</em> (Draparnaud, 1805) in the Benelux (Gastropoda: Hygromiidae)

Hemicycla nisamarae (Gastropoda: Helicidae), a new species from La Gomera (Canary Islands)

Authors: C.J.P.J. Margry, F. Swinnen, M. Artiles Ruiz
Basteria, 88 (1): 76-84Published:

Abstract

Hemicycla nisamarae spec. nov. is described and compared with other Hemicycla species from the Canarian Archipelago. Information is given about the shell, external morphology, genitals, jaw, radula, ecology, and distribution.

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Download articleArtikel <em>Hemicycla nisamarae</em> (Gastropoda: Helicidae), a new species from La Gomera (Canary Islands)

Functional analysis of the extraordinary shell of Sherbornia mirabilis Iredale, 1917 (Caenogastropoda) and discussion on its current placement within the Pickworthiidae

Authors: J.G.M. Raven, P.A.J. Bakker, G. Spagliardi
Basteria, 88 (1): 85-94Published:

Abstract

In 1917 Iredale described Sherbornia mirabilis as a peculiar gastropod from Christmas Island in the Indian Ocean. Its remarkable shell morphology leads to questions on func­tions and adaptations. The greatly expanded apertural shield, three canals and protoconch morphology sug­gest relationships to different genera and families, which prompts the question whether morphological adaptations of this species are evolutionary polyphyletic. Based on shell morphology (studied by scanning electron microscope and micro-tomography) we discuss the placement of this spe­cies and the closely related extinct species Faxia macros­toma. Shell shape, deep sinus in the protoconch, and round aperture support its current allocation within the Cerithi­oidea. Within this superfamily the canals are unique, as are the expanded peristome/apertural shield, thus supporting placement in a separate family Sherborniidae.

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Download articleArtikel Functional analysis of the extraordinary shell of <em>Sherbornia mirabilis</em> Iredale, 1917 (Caenogastropoda) and discussion on its current placement within the Pickworthiidae

Microstellaria juliae – a remarkable new subfamily, new genus and new species in the Pyramidellidae (Gastropoda)

Authors: J.G.M. Raven, R.G. Moolenbeek
Basteria, 88 (1): 95-103Published:

Abstract

A new genus and species within the Pyramidellidae are described from offshore coral reefs at various localities in Indonesia and from the Royal Charlotte atoll in the South China Sea: Microstellaria juliae gen. et spec. nov. Thus far only dead specimens have been found. The remarkable discoidal, planispiral shells with regularly placed projecting spines appear to be miniature versions of Stellaria Möller, 1832 (family Xenophoridae) or juvenile Astraea Röding, 1798 (Turbinidae). The heterostrophic protoconch at an almost 90o angle to the teleoconch demonstrates its placement within the Pyramidelloidea, however, the shells have some unique features. The internal septa in the early part of the teleoconch have not been recorded before from the Pyramidelloidea. They are interpreted as preventive measure in case the protoconch is damaged. The planispiral shape is exceptional within the Pyramidellidae, albeit not unique. The projecting spines along the periphery and on the aperture are unique within the superfamily. Therefore the genus is placed within a new subfamily Microstellariinae subfam. nov., currently within the Pyramidellidae, but it could constitute a separate family within the Pyramidelloidea.

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Download articleArtikel <em>Microstellaria juliae</em> – a remarkable new subfamily, new genus and new species in the Pyramidellidae (Gastropoda)

Cerithiopsidae (Gastropoda) from the Cape Verde archipelago collected during the cancap expeditions

Authors: L. Hoffman, B. van Heugten, J. Goud
Basteria, 88 (1): 104-128Published:

Abstract

Species in the family Cerithiopsidae are spongivores that live in all oceans from the littoral to the upper bathyal zone. This paper discusses the cerithiopsid species that were collected during the Dutch expeditions CANCAP-VI (1982) and CANCAP-VII (1986) to the Cape Verde archipelago. Fourteen species were identified in the cancap samples. Six new species of Cerithiopsis are proposed: C. sal spec. nov., C. luzia spec. nov., C. vicente spec. nov., C. cima spec. nov., C. boavista spec. nov. and C. saotiago spec. nov. Five existing species of the genus Cerithiopsis Forbes & Hanley, 1850 were redescribed and illustrated: Cerithiopsis laurauae, C. albae, C. carmelae, C. chechoi and C. eolo. The identification of one species was uncertain: Cerithiopsis cf. diadema. In addition, a new species is described in the genus Dizoniopsis Sacco, 1895: D. razo spec. nov. Cerithiopsis leopoldoi Espinosa & Ortea, 2021 is placed in the genus Dizoniopsis. The cerithiopsid species in our material are distributed throughout the archipelago; the oceanic gaps between the islands (10 – 100 km) have not been a barrier in the distribution of the species. None of the cerithiopsid species known from the Cape Verde archipelago have been found on the NW African coast, the Canary Islands, Madeira, the Azores or Ascension. A high degree of endemism is likely for the cerithiopsids from the Cape Verde archipelago.

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Download articleArtikel Cerithiopsidae (Gastropoda) from the Cape Verde archipelago collected during the cancap expeditions

Erratum

Authors: B.M. Landau, P.A.J. Bakker, C. Marques da Silva
Basteria, 87 (2): 116-126Published:

Abstract

No abstract available

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Download articleArtikel Erratum

Additional data on Acanthochitona pilosa Schmidt-Petersen, Schwabe & Haszprunar, 2015 (Polyplacophora: Acanthochitonidae)

Authors: H.L. Strack, L. Leotta
Basteria, 88 (1): 129-138Published:

Abstract

The status of Acanthochitona pilosa Schmidt-Petersen, Schwabe & Haszprunar, 2015 as a distinct species is firmly confirmed by additional discriminating morphological characters and genetic analysis. Furthermore, new information has become available on its habitat, biology, and distribution range. The genetic analysis also shows the urgent need for a more comprehensive, large scale molecular phylogeny and species delimitation of European / North African Acanthochitonidae.

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Download articleArtikel Additional data on <em>Acanthochitona pilosa</em> Schmidt-Petersen, Schwabe & Haszprunar, 2015 (Polyplacophora: Acanthochitonidae)

Completed description of Bhutanese Tibetoradix cf. hookeri (Gastropoda, Pulmonata, Lymnaeoidea), with species-specific, environmentally induced decollation

Authors: E. Gittenberger, K. Tobgay
Basteria, 87 (2): 139-140Published:

Abstract

In two samples of Tibetoradix cf. hookeri, collected at different altitudes, the shells differ by being decollated at the highest locality and not so at the lowest. Potential decollation is hypothesized to be an adaptive character state enabling a longer lifespan at higher altitudes in the Himalaya.

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Download articleArtikel Completed description of Bhutanese <em>Tibetoradix</em> cf. <em>hookeri</em> (Gastropoda, Pulmonata, Lymnaeoidea), with species-specific, environmentally induced decollation