Two New Uromunna Species (Isopoda: Asellota: Munnidae) from the Korean Peninsula and Their Phylogenetic Position within Munnoid Groups

Abstract

Two new Uromunna species, Uromunna mundongensis sp. n. and Uromunna jejuensis sp. n., are described from the Korean Peninsula, representing the first record of the genus in Korean waters. Genetic analyses using two mitochondrial (COI, Cytb) and one ribosomal (18S rRNA) gene allowed us to confirm high pair-wise interspecific differences with the establishment of reliable barcoding gaps of COI (19.9%) and 18S (0.4%) between the new species. Finally, the phylogenetic relationship between the Uromunna species as well as the position of the genus within the munnoid groups are reconstructed using 18S.

Additions to the Pacific Fauna of Haplomunnidae (Isopoda: Asellota) with Descriptions of Three New Species from the Kuril–Kamchatka Trench Region

“…2) from the family Haplomunnidae showed low level of interspecific distances (lower 1%) for the 18S marker. Such value of genetic distances between species was described earlier for species Uromunna (Munnidae) [59], and it may be explained by high conservatism of this marker. Our genetic results are the first genetic data for the described Thylakogaster species and for the genus Haplomunna.…”

“…The phylogenetic reconstruction based on 18S sequences corresponded with previous data based on morphological [1] and genetic analysis [3,21,59]. Families included in the analysis showed their monophyly; however, support for the family Dendrotionidae was not high.…”

“…Families included in the analysis showed their monophyly; however, support for the family Dendrotionidae was not high. This family showed unresolved branches in previous research as well [3,21,59]. Obviously, a single genetic marker was not sufficient to resolve phylogeny between the families.…”