Five new species of the Simulium decuplum subgroup of the Simulium ( Gomphostilbia ) batoense species-group (Diptera: Simuliidae) from Thailand and their phylogenetic relationships

Takaoka, Hiroyuki and Srisuka, Wichai and Low, Van Lun and Saeung, Atiporn (2018) Five new species of the Simulium decuplum subgroup of the Simulium ( Gomphostilbia ) batoense species-group (Diptera: Simuliidae) from Thailand and their phylogenetic relationships. Acta Tropica, 182. pp. 271-284. ISSN 0001-706X

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Official URL: https://doi.org/10.1016/j.actatropica.2018.03.019

Abstract

Five new species of black flies, Simulium (Gomphostilbia) chiangraiense, S. (G.) huaikaeoense, S. (G.) khaokhoense, S. (G.) maeklangense, and S. (G.) pamiangense, are described based on adults, pupae and mature larvae from Thailand. These five species are similar to one another and are placed in the S. decuplum subgroup of the S. batoense species-group by having the male fore coxae darkened, ventral plate flat and transverse; pupal gill with 10 short filaments; and larval postgenal cleft deep approaching or reaching the posterior margin of the hypostoma. Simulium (G.) chiangraiense sp. nov. and S. (G.) pamiangense sp. nov. differ from the three other new species by the much longer pupal gill filaments and darkened dorsal surface of abdominal segments 1 and 2. Taxonomic notes are provided to distinguish these five new species from five other related species. The phylogenetic positions of these new species in the S. decuplum subgroup are presented based on the mitochondrial COI gene. Simulium (G.) pamiangense sp. nov. and S. (G.) huaikaeoense sp. nov. are highly similar to each other genetically, showing a sister relationship, though they are clearly different morphologically. On the contrary, S. (G.) khaokhoense sp. nov. is distantly positioned from S. (G.) huaikaeoense nov., though it is almost indistinguishable morphologically from the latter.

Item Type: Article
Uncontrolled Keywords: Black fly; New species; Phylogenetics; COI gene; Thailand
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history
R Medicine
Divisions: Faculty of Medicine
Faculty of Science > Institute of Biological Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Mar 2019 03:43
Last Modified: 04 Mar 2019 03:43
URI: http://eprints.um.edu.my/id/eprint/20563

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