High diversity of Endothyrella (Gastropoda, Pulmonata, Plectopylidae) in Bhutan, with a description of four new species

Authors: E. Gittenberger, C. Gyeltshen, K. Tobgay, S. Sherub
Basteria, 86 (2): 55-71

Abstract

Recent fieldwork in Bhutan resulted in the discovery of 4 endemic species of Endothyrella that are described as new to science, viz. E. barnai Gittenberger & Sherub, E. manasensis Gittenberger & Sherub, E. pterocallus Gittenberger, Gyeltshen & Tobgay, and E. trimagnipili Gittenberger, Gyeltshen & Tobgay. This results in a total of 9 Endothyrella species for Bhutan, 7 of which are not known from elsewhere. The new species are described and additional data are presented for the Endothyrella species dealt with in an earlier paper. A revised identification key for the Bhutanese species, based on shell characters, is added. The diversity in shell size and struc­ture is discussed and 4 species groups are provisionally dis­tinguished on the basis of the structure of the genital tracts.

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Download articleArtikel High diversity of <em>Endothyrella</em> (Gastropoda, Pulmonata, Plectopylidae) in Bhutan, with a description of four new species

The genera Dioryx and Cycloryx (Gastropoda, Caenogastropoda, Alycaeidae) in Bhutan, with a description of four new species

Authors: E. Gittenberger, C. Gyeltshen, K. Tobgay, S. Sherub
Basteria, 86 (2): 72-82

Abstract

Samples of the genera Dioryx and Cycloryx from Bhutan are identified or described as new species. Next to the wide­spread D. urnula, 7 species of Cycloryx are recognized, 4 of which are endemic to Bhutan and new to science, viz. C. pemaledai Gittenberger & Sherub, spec. nov., C. globhu­tanus Gittenberger & Sherub, spec. nov., C. haumbiclausus Gittenberger & Gyeltshen, spec. nov., and C. sajumbiclausus Gittenberger & Gyeltshen, spec. nov. An identification key is provided for Cycloryx species. Cycloryx summus (Godwin-Austen, 1914), which was described from “Rechila Peak, Western Bhutan”, is not accepted as a Bhutanese species since its type locality is most probably in West Bengal, out­side the present borders of Bhutan.

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Download articleArtikel The genera <em>Dioryx</em> and <em>Cycloryx</em> (Gastropoda, Caenogastropoda, Alycaeidae) in Bhutan, with a description of four new species

A new high-altitude Metafruticicola species from Türkiye (Gastropoda, Pulmonata, Hygromiidae)

Authors: A.Örstan, M.Z. Yıldırım
Basteria, 86 (2): 83-87

Abstract

A land snail from an altitude of 2300 m on Tahtalı Mountain in southern Türkiye is described as a new species, Metafruticicola diva Örstan & Yıldırım spec. nov. The new species is distinguished from the previously known high-altitude Metafruticicola species by its unbanded shell with short hairs and anatomical characteristics.

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Download articleArtikel A new high-altitude <em>Metafruticicola</em> species from Türkiye (Gastropoda, Pulmonata, Hygromiidae)

The fossil Strombidae (Gastropoda) from Vanuatu (= Nouvelles-Hébrides) described by Abrard, 1947

Author: A.M. Dekkers
Basteria, 86 (2): 88-95

Abstract

The taxonomic status of the fossil Strombidae recorded by Abrard (1947) from Vanuatu (formerly New Hebrides) is re­viewed and updated. One of the species is described here as Canarium (Elegantum) stoutjesdijki spec. nov. For the pre­occupied name Strombus minimus var. minor Abrard, 1947, Ministrombus abrardi nom. nov. is introduced. Strombus (Canarium) praegibberulus Abrard, 1947 is considered a junior synonym of Gibberulus gibbosus (Röding, 1798).

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Download articleArtikel The fossil Strombidae (Gastropoda) from Vanuatu (= Nouvelles-Hébrides) described by Abrard, 1947

A review of Hecuba Schumacher, 1817 (Bivalvia: Donacidae), with description of a new species and validation of Hecuba pubescens (Linnaeus, 1758), overlooked for more than 250 years

Authors: J.G.M. Raven, H. Dekker
Basteria, 86 (2): 96-113

Abstract

Using museum collections and historical literature the donacid genus Hecuba is revised. Three species are recog­nised, H. scortum (Linnaeus, 1758), H. pubescens (Linnaeus, 1758) and a new species described herein as H. reticulata Raven & Dekker. Each are described, figured and their geo­graphical distributions are reviewed. Hecuba rosea Schumacher, 1817 is shown to be a junior synonym of Donax striatus Linnaeus, 1767, not of Donax vittatus Linnaeus, 1758.

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Download articleArtikel A review of Hecuba Schumacher, 1817 (Bivalvia: Donacidae), with description of a new species and validation of <em>Hecuba pubescens</em> (Linnaeus, 1758), overlooked for more than 250 years

The valid name for the common West-Indian Drymaeus species is D. elongatus (Röding, 1798), a nomen protectum (Gastropoda: Bulimulidae)

Author: R.A. Bank
Basteria, 86 (2): 114-119

Abstract

The names Helix elongata Röding, 1798 and Helix (Cochlogena) virgulata A. Férussac, 1821, both being used for the same Drymaeus species occurring on several West Indian islands, are analysed. It is concluded that, in contrast to the opinion of Breure (2022, Basteria, 86: 20-21), Helix elongata Röding is a nomen protectum, and that the name intro­duced by Férussac is a junior synonym. The correct name is Drymaeus elongatus (Röding, 1798); a lectotype is selected.

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Download articleArtikel The valid name for the common West-Indian <em>Drymaeus</em> species is <em>D. elongatus</em> (Röding, 1798), a nomen protectum (Gastropoda: Bulimulidae)

Distribution and ecology of Zootecus insularis (Ehrenberg, 1831) (Gastropoda, Pulmonata, Achatinidae, Subulininae) and its value as a palaeoenvironmental indicator species

Authors: A. Girod, D. Sassoon
Basteria, 86 (2): 120-152

Abstract

Zootecus insularis is a land snail usually confined to arid and semidesert environments. However, studies from the Arabian Peninsula and Pakistan have reported that this spe­cies have also lived in mesic habitats such as gardens, palm plantations, and other irrigated places. A likely reason for this contradiction is that Z. insularis is highly adaptable and therefore able to survive in semi-arid environments as well as more mesic microhabitats. Most of the mesic micro­habitats where Z. insularis has been found are of anthropic origin and, therefore, related to modern, often present-day ecology. We present an in-depth, comprehensive review of both ancient and modern occurrences of Z. insularis based on 19th and 20th century contributions of geographers, zoolo­gists, botanists, and archaeologists, and we investigate this species’ palaeoenvironment. Comparisons made between finds of Z. insularis, floral and faunal remains, and palaeoen­vironmental records show that this species had responded to periods of climatic variability in Asia and Africa during the Pleistocene and Holocene. Overall, our review contrib­utes to the understanding of the distribution of Z. insularis through space and time, and its use as a palaeoenvironmen­tal indicator.

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Download articleArtikel Distribution and ecology of <em>Zootecus insularis</em> (Ehrenberg, 1831) (Gastropoda, Pulmonata, Achatinidae, Subulininae) and its value as a palaeoenvironmental indicator species

Additions and corrections to the gastropod fauna of the Pliocene of Estepona, south-western Spain, 5

Authors: B.M. Landau, H. Mulder
Basteria, 86 (2): 153-173

Abstract

Seventeen small species of gastropod are added to the fauna of the Lower Piacenzian Pliocene of Estepona, of which six are described as new: Skenea gofasi spec. nov., Papuliscala spinosa spec. nov., Narrimania saldubensis spec. nov., Ophieulima lobilloensis spec. nov., Talassia plioalboranensis spec. nov., and Specula estebbunensis spec. nov.

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Download articleArtikel Additions and corrections to the gastropod fauna of the Pliocene of Estepona, south-western Spain, 5