Abstract
The genus Urumaelmis Satô, 1963 is recorded for the first time from China. A new species, Urumaelmis yunnanensis sp. nov. is described from Yunnan, China. The new species can be distinguished from U. uenoi uenoi (Nomura, 1961) and U. u. tokarana (Satô, 1963) by its larger body size, and by the carina on elytral interval VI which extends nearly from base to apex; and from U. flammea Nakajima & Kamite, 2020 also by its black body color, the median groove of pronotum not reaching the base, pointed anterior pronotal angles, and by the absence of parameres. The habitus, and aedeagus photos, and line drawings of the male genitalia are provided.
References
Jäch, M.A, Kodada, J., Brojer, M., Shepard, W.D. & Čiampor, F. (2016) Coleoptera: Elmidae and Protelmidae. World Catalogue of Insects. Vol. 14. Brill, Leiden, XXI + 318 pp. https://doi.org/10.1163/9789004291775
Jäch, M.A. & Boukal, D.S. (1995) Elmidae: 2. Notes on Macronychini, with descriptions of four new genera from China (Coleoptera). In: Jäch, M.A. & Ji, L. (Eds.), Water Beetles of China. Vol. 1. Zoologisch-Botanische Gesellschaft & Wiener Coleopterologenverein, Vienna, pp. 299–323.
Shepard, W.D. & Sites, R.W. (2016) Aquatic beetles of the Bettles of the family Dryopidae and Elmidae(Insecta: Byrrhoidea) of Thailad: Annotaed list and illustrated key to genera. Natural History Bulletin of the Siam Society, 61 (2), 89–126.
Satô, M. (1963) New forms in the genus Zaitzevia Champion from the Ryukyus (Col. Elmidae). New Entomologist, 12 (7), 39–41.
Nakajima, J. & Kamite, Y. (2020) A new species of the genus Urumaelmis Satô (Coleoptera, Elmidae, Macronychini) from Kyushu Island, Japan. Zootaxa, 4853 (3), 421–428. https://doi.org/10.11646/zootaxa.4853.3.5
Nomura, S. (1961) Elmidae found in subterranean waters of Japan. Akitu, 10 (1/2), 1–3.