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Friday, January 31st, 2020
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| 9:29a | [Entomology • 2020] Kaikaia gaga • An Unusual New Genus and Species of Centrotine Treehopper (Hemiptera: Membracidae: Centrotinae) from Nicaragua
Abstract A new genus and species of treehopper (Membracidae: Centrotinae) from Nicaragua, Kaikaia gaga, is described and illustrated. Kaikaia is particularly notable in having an assemblage of features more characteristic of the Old World centrotine tribe Beaufortianini than currently recognized New World centrotine tribes. Kaikaia lacks cucullate setae of the mesothoracic femora, which are present in the Boocerini and to some extent, the Platycentrini. The new genus also has an additional m-cu crossvein in the forewing, as well as a frontoclypeal shape and overall appearance similar to Platycentrus Stål. Nevertheless, Kaikaia differs from Platycentrus in its narrow, straight shape of the second valvulae, which bear several prominently raised dorsal teeth and an acute projection along the dorsal margin that resemble those of some members of Nessorhinini. Keywords: Hemiptera, Central America, Membracoidea, membracidos, Taxonomy, Morphology  Kaikaia gaga Brendan O. Morris and Christopher H. Dietrich. 2020. An Unusual New Genus and Species of Centrotine Treehopper (Hemiptera: Membracidae: Centrotinae) from Nicaragua. Zootaxa. 4729(2); 286–292. DOI: 10.11646/zootaxa.4729.2.9  | ||
| 11:05a | [Phycology • 2020] Eisenia nipponica • A Multigene Molecular Phylogeny of Eisenia (Laminariales) reveals Evidence for A New Species from Japan
ABSTRACT Recently, synonymizing Eisenia with Ecklonia was suggested based on a molecular phylogeny using the rbcL gene and ITS1–5.8S rDNA sequences. However, in a multigene molecular phylogeny based on mitochondrial cox1, cox3 genes and the atp8–16S rDNA region, as well as the plastid atpB, psaA, psbA and rbcL genes, Ecklonia spp. formed a monophyletic clade supported by high statistical values, and Eisenia spp. showed monophyly depending on analytical methods. The Japanese Eisenia species that used to be identified as Eisenia arborea (E. arborea sensu Arasaki) was shown to be genetically distant from E. arborea from the NE Pacific and E. bicyclis from Japan. Eisenia spp. were morphologically distinct in having a split meristematic zone in the mature thallus forming a dorsi-ventral blade with false branches. Therefore, we propose reinstatement of Eisenia as an independent genus and describe a new species, Eisenia nipponica (= E. arborea sensu Arasaki) from Japan. E. nipponica is distributed on the Pacific Coast of central Honshu, having a separate geographic range from E. bicyclis, which is distributed on the Pacific coast of eastern Honshu and the Sea of Japan coast of north-western Honshu and northern Kyushu. KEYWORDS: Ecklonia, Eisenia nipponica sp. nov., Laminariales, multigene molecular phylogeny, new species, taxonomy  Eisenia nipponica H.Kawai, S.Akita, K.Hashimoto & T.Hanyuda sp. nov. Etymology: The specific epithet refers to the distributional range of the species. Hiroshi Kawai, Shingo Akita, Kazuki Hashimoto and Takeaki Hanyuda. 2020. A Multigene Molecular Phylogeny of Eisenia reveals Evidence for A New Species, Eisenia nipponica (Laminariales), from Japan. European Journal of Phycology. DOI: 10.1080/09670262.2019.1692911 |
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