Tag Archive for: biodiversity

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.

Article

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

New northern Atlantic species of the family Fissurellidae (Gastropoda, Vetigastropoda)

Authors: L. Hoffman, B. van Heugten, J. Goud
Basteria, 87 (2): 150-155Published:

Abstract

Four species of the family Fissurellidae were identified from two deep bathyal samples from the Cape Verde Islands and on the Mid-Atlantic Ridge. Cornisepta magna spec. nov. Is described from off Sao Nicolau, Cape Verde islands. Cornisepta microphyma, Profundisepta bipolar spec. nov. and an undescribed species of the genus Fissurisepta were found on the Mid Atlantic Ridge.

Article

Download articleArtikel New northern Atlantic species of the family Fissurellidae (Gastropoda, Vetigastropoda)

Hidden diversity in cockles: six new Indo-Pacific species and a new subfamily with notes on the Vasticardium elongatum species group (Bivalvia: Cardiidae)

Author: J.J. ter Poorten
Basteria, 87 (2): 169-205Published:

Abstract

Six new Indo-Pacific Cardiidae species are described originating from various institutional collections, supplemented with material from private collections, mostly based on shell characters and partly augmented by genetic information: Microcardium lukasi spec. nov., Microcardium roelofi spec. nov., Ctenocardia lisae spec. nov., Acrosterigma zamboangaense spec. nov., Vasticardium jorgeni spec. nov. and Vasticardium albopacificum spec. nov. A new subfamily Nemocardiinae subfam. nov. is proposed for the genera Nemocardium Meek, 1876; Pratulum Iredale, 1924; Keenaea Habe, 1951; Lophocardium P. Fischer, 1887; Frigidocardium Habe, 1951 and Microcardium Keen, 1937. In addition it comprises the extinct genera Anechinocardium Hickman, 2015 and Arctopratulum Keen, 1954. Some notes are given on the composition and geographic distribution of the Vasticardium elongatum group of species. Acrosterigma elongatum cipangense J. Vidal, 1993 is considered a junior synonym of Trachycardium (Acrosterigma) serricostatum okinawaense Kuroda, 1960 and Vasticardium kuboderai Thach, 2015 a junior synonym of Vasticardium berschaueri Thach, 2014.

Article

Download articleArtikel Hidden diversity in cockles: six new Indo-Pacific species and a new subfamily with notes on the <em>Vasticardium</em> elongatum species group (Bivalvia: Cardiidae)

Rhytidoid land snails collected in 2007 at 21 sites in northern Madagascar, with descriptions of 13 new species and two new subspecies (Gastropoda, Rhytidoidea: Acavidae and Clavatoridae)

Authors: K.C. Emberton, J.A. Rakotondrazafy
Basteria, 84 (4/6): 170-209Published:

Abstract

Collections in 2007 of 634 stations at 21 sites in northern Madagascar yielded 35 species and subspecies of rhytidoid land snails: Ampelita akoratsara akoratsara Emberton, 1999, A. akoratsara paulayi subspec. nov., A. analamerae Ember­ton, 1999, A. andavakoerae spec. nov., A. anjajaviensis spec. nov., A. atropos (Deshayes, 1850), A. capdambrae spec. nov., A. celestinae spec. nov., A. clotho (Deshayes, 1850), A. con­sanguinea (Deshayes, 1850), A. ela spec. nov., A. gaudens (Mabille, 1884), A. granulosa (Deshayes, 1850), A. kendrae spec. nov., A. kirae spec. nov., A. lachesis (Deshayes, 1850), A. lamarei lamarei (L. Pfeiffer, 1846), A. lamarei sakalava (Angas, 1878), A. lincolni spec. nov., A. masoalae Ember­ton, 1999, A. michellae spec. nov., A. miovaova spec. nov., A. niarae spec. nov., A. stilpna (Mabille, 1884), A. thompsoni spec. nov., Eurystyla ambatoensis (Emberton & Griffiths, 2009), E. julii julii (Fischer-Piette & Garreau, 1965), E. julii kely subspec. nov., E. julii soa (Emberton & Griffith, 2009), Paraclavator moreleti (Deshayes, 1851), Embertoniphanta amphibulima (L. Pfeiffer, 1847), E. echinophora (Deshayes, 1850), E. oviformis (Grateloup, 1840), E. josephinae spec. nov., and E. socii (Fischer-Piette, F. Blanc & Salvat, 1975).

Live adults of 17, and tissue samples of 22, of these 35 taxa were collected. The new species bring Madagascar’s total described rhytidoid species to 135. More await discovery, both within Madagascar’s forests and within extensive, unidentified collections from 1995-1996.

Discoveries include: (a) the hairy-shelled Embertoniph­anta echinophora has a broad rainforest distribution and has an isolated, deciduous-forest, sister species, E. joseph­inae spec. nov.; (b) the gigantic (shell height 91.7 mm), micro-endemic Embertoniphanta socii is effectively absent from northern Ankarana; (c) the Eurystyla radiation is much more extensive than previously imagined; (d) south­ern Namoroka Reserve is not the home of its namesake Ampelita namerokoensis Fischer-Piette, 1952 (described from Bemaraha, far to the south!), but of A. thompsoni spec. nov.; (e) A. miovaova spec. nov., as proposed, is one of the most conchologically variable species of land snails; (f) A. lincolni spec. nov. is now the largest known Ampelita (73.5 mm diameter).

Article

Download articleArtikel Rhytidoid land snails collected in 2007 at 21 sites in northern Madagascar, with descriptions of 13 new species and two new subspecies (Gastropoda, Rhytidoidea: Acavidae and Clavatoridae)