Urumaelmis, Sato, 1963

Bian, Dongju & Wang, Zhanxiang, 2021, A new species of the genus Urumaelmis Satô, and the first record of the genus from China (Coleoptera: Elmidae), Zootaxa 5023 (1), pp. 142-146 : 145

Key to species and subspecies of the genus Urumaelmis

(Modified from Nakajima & Kamite, 2020: 426)

1. Body larger, 2.3–2.6 mm. Elytral carina on interval VI extending nearly from base to apex........................... 2

- Body smaller 1.7–2.2 mm. Elytral carina on interval VI visible only in anterior and apical part........................ 3

2. Body reddish, median groove of pronotum reaching base, apical parts of parameres visible in basal 1/3 of the penis.................................................................................. U. flammea Nakajima & Kamite

- Body black, median groove of pronotum not reaching base, parameres absent................... U. yunnanensis sp. nov.

3. Elytra shiny, with punctures of each stria feebly visible. Sides of pronotum slightly sinuate near base. Yaku-shima Is.,AmamiIsls., Okinawa Isls...................................................................... U. uenoi uenoi (Nomura)

- Elytra subopaque, with punctures of each stria very feebly visible. Sides of pronotum not sinuate near base. Kuchino-shima Island ( Tokara Isls. ) ................................................................. U.uenoi tokarana (Satô)