Abstract
A new mayfly species, Rhoenanthus (Rhoenanthus) tungaiensis sp. nov. is described and characterized at the larval stage by fore tibiae relatively long with dense hair like setae on dorsal and lateral surface, male compound eyes large, mandibular tusks 0.8 times longer than head length, segment I of maxillary palpi 1.7 times longer than segment II, fore femur 2.9 times longer than its greatest width, gill III with 46–48 marginal fibrillae on lateral margin of dorsal lamellae and 35–37 on ventral lamellae. At the imaginal stage, the new species can be separated by inverted bell shaped markings on terga, purplish brown intercalaries in forewings, costal cross veins reddish brown and infuscated, MP2 connected to CuA basally.
References
Barber-James, H., Sartori, M., Gattolliat, J.L. & Webb, J. (2013) World checklist of freshwater Ephemeroptera species. Available from: http://fada.biodiversity.be/group/show/35 (accessed 2 May 2019)
Bae, Y.J. & McCafferty, W.P. (1991) Phylogenetic systematics of the Potamanthidae (Ephemeroptera), Transactions of the American Entomological Society, 117 (3–4), 1–143.
Eaton, A.E. (1881) An announcement of new genera of the Ephemeridae, Entomologist Monthly Magazine, 17, 191–197.
Navás, L. (1922) Efemeropteros nuevos o poco conocidos, Boletin de la Sociedad Entomológica de España, 5, 54–63.
Nguyen, V.V. & Bae, Y.J. (2004) Descriptions of Rhoenanthus sapa, New Species, and Larval Stage of R. magnificus Ulmer (Ephemeroptera: Potamanthidae) from Vietnam, Aquatic Insects, 26 (1), 9–17.
https://doi.org/10.1076/aqin.26.1.9.35373
Soldán, T. (2001) Status of the systematic knowledge and priorities in Ephemeroptera studies: the Oriental region. In: Dominguez, E. (Ed.), Trends in Research in Ephemeroptera and Plecoptera. Kluwer Academic/Plenum Publishers, New York, pp. 53–65.
https://doi.org/10.1007/978-1-4615-1257-8_9
Soldán, T. & Putz, M. (2000) The Larva of Rhoenanthus distafurcus Bae & McCafferty (Ephemeroptera: Potamanthidae) with Notes on Distribution and Biology, Aquatic Insects, 22 (1), 9–17.
https://doi.org/10.1076/0165-0424(200001)22:1;1-Z;FT009
Ulmer, G. (1920) Neue Ephemeropteren. Archiv für Naturgeschichte, Abteilung A, 11, 1–80. [1919]
Wu, X.Y. & You, D.S. (1986) A new genus and species of Potamanthidae from China (Ephemeroptera). Acta Zootaxononomica Sinica, 11, 401–405. [in Chinese]
Yoon, I.B. & Bae, Y.J. (1985) The classification of Ephemeroidea (Ephemeroptera) in Korea. Entomological Research Bulletin, 11, 93–109.