A new species of inseminating seasonal killifish of the Cynopoecilus melanotaenia complex from southern Brazil (Cyprinodontiformes: Rivulidae) [Cynopoecilus feltrini]

  • Wison José Eduardo Moreira da Costa , Pedro Fasura de Amorim , José Leonardo Oliveira Mattos

    Zitat

    Abstract

    Background

    The Cynopoecilus melanotaenia complex is a morphologically homogeneous killifish group, endemic from an area encompassing southern Brazil and northeastern Uruguay. It presently comprises four valid species: C. melanotaenia, the type species of the genus, and C. fulgens, C. intimus, and C. nigrovittatus.

    New information

    Cynopoecilus feltrini, n. sp., from the lower Tubarão river basin, southern Brazil, is distinguished from all congeners of the C. melanotaenia complex by having frontal E-scales medially overlapped, branchiostegal region orangish red in males and dorsum with few dark brown spots above opercular region. A phylogenetic tree derived from the analysis of a fragment of the mitochondrial gene cytochrome c oxidase subunit I (681 bp) indicates that C. feltrini is a member of the clade that includes all species of the C. melanotaenia complex except C. melanotaenia, as well as that C. feltrini is the sister group of a clade comprising C. fulgens and C. nigrovittatus.

    Quelle: Biodiversity Data Journal 4: e6888

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