Abstract
We examined adult specimens of the Mystacides azureus Species Group (Trichoptera: Leptoceridae) collected in Japan and confirm three species including M. azureus Linnaeus 1761 and two new species, M. rivularis and M. moritai. Males and females of the new species are described. Mystacides azureus in Japan is shown to have a considerable variation in morphology of the male tergum X. We analyzed mitochondrial COI barcodes of the genus Mystacides including these three species to confirm their species status. A maximum likelihood phylogeny based on COI barcodes shows monophyly of the new species. It also supports the hypothesis that morphological variation of the male tergum X in Japanese populations is intraspecific in only M. azureus.
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Reference19 articles.
1. Berthold, A.A. (1827) Latreille’s natürliche Familien des Thierreichs, aus dem französischen, mit Anmerkungen und Zusätzen. Im Verlage des Gr. H.S. priv. Landes-Industrie- Comptoirs, Weimar, viii + 605 pp.
2. Gullefors, B. & Petersson, E. (1993) Sexual dimorphism in relation to swarming and pair formation patterns in leptocerid caddisflies (Trichoptera: Leptoceridae). Journal of Insect Behavior, 6 (5), 563–577. https://doi.org/10.1007/BF01048123
3. Hoang, D.T., Chernomor, O., Haeseler, A. von, Minh, B.Q. & Vinh, L.S. (2017) UFBoot2: Improving the ultrafast bootstrap approximation. Molecular Biology and Evolution, 35 (2), 518–522. https://doi.org/10.1093/molbev/msx281
4. Kalyaanamoorthy, S., Minh, B.Q., Wong, T.K.F., Haeseler, A. von & Jermiin, L.S. (2017) ModelFinder: Fast model selection for accurate phylogenetic estimates. Nature Methods, 14 (6), 587–589. https://doi.org/10.1038/nmeth.4285
5. Kimmins, D.E. (1963) On the Leptocerinae of the Indian sub-continent and north east Burma (Trichoptera). Bulletin of the British Museum (Natural History), Entomology, 14 (6), 261–316. https://doi.org/10.5962/bhl.part.8784