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Molecular and morphological analyses reveal pseudocryptic diversity in Micromelo undatus (Bruguière, 1792) (Gastropoda: Heterobranchia: Aplustridae)
Feliciano, K.; Malaquias, M.A.E.; Stout, C.; Brenzinger, B.; Gosliner, T.M.; Valdés, Á. (2021). Molecular and morphological analyses reveal pseudocryptic diversity in Micromelo undatus (Bruguière, 1792) (Gastropoda: Heterobranchia: Aplustridae). Syst. Biodiv. 19(7): 834-858. https://dx.doi.org/10.1080/14772000.2021.1939458
In: Systematics and Biodiversity. Cambridge University Press: Cambridge. ISSN 1477-2000; e-ISSN 1478-0933, more
Peer reviewed article  
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Keywords
    Gastropoda [WoRMS]; Micromelo undatus (Bruguière, 1792) [WoRMS]; Mollusca [WoRMS]
    Marine/Coastal
Author keywords
    Atlantic; Gastropoda; indo-west pacific; marine biodiversity; Mollusca; phylogeny; systematics
Authors  Top 
  • Feliciano, K.
  • Malaquias, M.A.E., more
  • Stout, C.
  • Brenzinger, B.
  • Gosliner, T.M.
  • Valdés, Á.
Abstract
    The genus Micromelo (family Aplustridae) occurs in almost all tropical and subtropical waters across the globe, with the exception of the Eastern Pacific. Most authors consider Micromelo undatus (Bruguière, 1792) as the only valid species in this genus. This study examines populations of specimens identified as M. undatus across its geographic range, using morphological and genetic data from two mitochondrial genes (16S and CO1) and one nuclear gene (Histone H3). The results reveal that M. undatus is a complex of four species with consistent genetic and anatomical differences. A literature review and evaluation of type material indicates that available names exist for three of the four species. Micromelo guamensis, M. undatus and M. scriptus are resurrected for species found in the Western Pacific, the Atlantic Ocean, and widespread in the Indo-Pacific, respectively. A new name is introduced for another species found in the Western Pacific, namely Micromelo barbarae sp. nov. and a neotype is designated for the type species of the genus M. undatus.
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