Genera and species of Baetidae in Japan: Nigrobaetis, Alainites, Labiobaetis, and Tenuibaetis n. stat. (Ephemeroptera)

Toshihito Fujitani, Toshiya Hirowatari, Kazumi Tanida

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We describe morphological characters of the genera Nigrobaetis, Alainites, Labiobaetis, and Tenuibaetis n. stat. and provide generic situations of six Japanese species: Nigrobaetis chocoratus n. comb., N. sacishimensis n. comb., Alainites atagonis, A. florens, A. yoshinensis, and Tenuibaetis pseudofrequentus. To evaluate the polarities of the morphological characters and the monophyly of Nigrobaetis, Alainites, Labiobaetis, and Tenuibaetis, character states of these four genera were compared with the genus Cloeon as an outgroup. Labiobaetis is considered to be a monophyletic group supported by a wide paraglossa. Tenuibaetis is a monophyletic group that is distinguishable from the related genera by robust setae with a medial ridge on the dorsomedian surface of the nymphal femur. We did not find any synapomorphic characters of Nigrobaetis or Alainites. Although we tentatively treat Nigrobaetis and Alainites as distinct genera, they are considered to be paraphyletic taxa.

Original languageEnglish
Pages (from-to)121-129
Number of pages9
JournalLimnology
Volume4
Issue number3
DOIs
Publication statusPublished - Dec 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Ecology
  • Aquatic Science
  • Water Science and Technology

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