Incorporating palaeogeography into ancestral area estimation can explain the disjunct distribution of land snails in Macaronesia and the Balearic Islands (Helicidae: Allognathini).

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Publisher: Elsevier B.V.
Document Type: Report
Length: 459 words

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Keywords Betic system; Biogeography; Canary Islands; Colonisation; Gastropoda; Iberian Peninsula; Madeira Archipelago; Rif system Highlights * Biogeography of Allognathini can be explained by Western Mediterranean paleogeography. * The systematics of Allognathini is revised and six genera are recognised as valid. * Macaronesia and the Balearic Islands were colonised independently from the Iberia. * The endangered narrow-range endemics Lampadia and Idiomela belong to Allognathini. Abstract The systematics and biogeographical history of the Eastern Mediterranean and Macaronesian land snail tribe Allognathini (Helicidae: Helicinae) is investigated based on mitochondrial and nuclear DNA sequence data. Our molecular phylogenetic analyses indicate that the genus-group systematics of the tribe needs to be revised. We show for the first time that the narrow-range endemics Lampadia and Idiomela from the Madeira Archipelago belong to Allognathini and represent together the sister group of the diverse Canary Island Hemicycla radiation. We therefore suggest synonymising Lampadiini with Allognathini. Sister to these Macaronesian genera was the Balearic Island Allognathus radiation. Pseudotachea was not recovered as a monophyletic group and the two currently recognised species clustered in Iberus. Similarly, Adiverticula was not recovered as a monophyletic group and clustered in Hemicycla. We therefore suggest synonymising Pseudotachea with Iberus and Adiverticula with Hemicycla. The six genera in Allognathini, which we distinguish here (Cepaea, Iberus, Allognathus, Hemicycla, Idiomela and Lampadia), originated in Western to South-western Europe according to our ancestral area estimation and the fossil record. The disjunct distribution of the Balearic Islands and Macaronesian sister clades and the mainly Iberian Iberus clade that separated earlier can be explained by the separation of the Betic--Rif System from the Iberian Peninsula during the late Oligocene to early Miocene, along with independent Miocene dispersals to the Balearic Islands and Macaronesia from the Iberian Peninsula, where the ancestral lineage became extinct. Author Affiliation: (a) Centrum für Naturkunde (CeNak), Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany (b) Departamento de Zoología y Biología Celular Animal, Facultad de Farmacia, Universidad País Vasco (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain (c) Senckenberg Biodiversität und Klima Forschungszentrum (SBiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany (d) LOEWE-Zentrum für Translationale Biodiversitätsgenomik (LOEWE-TBG), Senckenberganlage 25, 60325 Frankfurt am Main, Germany (e) Faculdade da Ciências da Vida, Universidade da Madeira, Penteada University Campus, 9020-105 Funchal, Portugal (f) Laboratory for Integrative Biodiversity Research (LIBRe), Luonnontieteellinen Keskusmuseo, Helsingin Yliopisto, Pohjoinen Rautatiekatu 13, 00100 Helsinki, Finland (g) Instituto das Florestas e Conservação da Natureza IP-RAM, 9064-512 Funchal, Portugal (h) Hengstrücken 52, 37520 Osterode am Harz, Germany * Corresponding author. Article History: Received 11 February 2021; Revised 18 April 2021; Accepted 29 April 2021 Byline: Marco T. Neiber [] (a,*), Luis J. Chueca (b,c,d), Amaia Caro (b), Dinarte Teixeira (e,f,g), Kevin A. Schlegel (h), Benjamín J. Gómez-Moliner (b), Frank Walther (a), Matthias Glaubrecht (a), Bernhard Hausdorf (a)

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Gale Document Number: GALE|A667687682