Open AccessA new Contradens from Laos (Bivalvia: Unionidae: Contradentini)
Author(s) -
Ekaterina S. Konopleva,
Ivan N. Bolotov,
Vitaly M. Spitsyn,
Alexander V. Kondakov,
Mikhail Y. Gofarov,
Ilya V. Vikhrev
Publication year - 2019
Publication title -
ecologica montenegrina
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.534
H-Index - 10
eISSN - 2337-0173
pISSN - 2336-9744
DOI - 10.37828/em.2019.24.5
Subject(s) - unionidae , bivalvia , type locality , biology , taxon , zoology , drainage basin , ecology , mollusca , taxonomy (biology) , geography , cartography
Here, we describe Contradens novoselovi sp. nov. (Bivalvia: Unionidae), a new freshwater mussel species from the Mekong Basin in Laos. Phylogenetic and morphological analyses reveal that the new taxon is closely related to Contradens comptus (Deshayes & Jullien, 1874) but can be distinguished from it by a smaller size, sub-ovate shell shape, tiny wrinkles near umbo, stronger pseudocardinal and lateral teeth, and fixed nucleotide substitutions. Contradens novoselovi sp. nov. is known only from the type locality in northwestern Laos and may represent a rare endemic species with restricted range.