Hydroporus tuvaensis Pederzani, 2001

Jia, Fenglong, Zhao, Shuang & Fery, Hans, 2012, Hydroporus sejilashan sp. n., a new diving beetle of the acutangulus - complex from Xizang, China (Qinghai-Tibet Plateau), and notes on other taxa of the genus (Coleoptera, Dytiscidae, Hydroporinae), Zootaxa 3223 (1), pp. 55-67 : 64

Hydroporus tuvaensis Pederzani, 2001

This species was described by Pederzani (2001: 234) after a small series of specimens from Sush village (ca. 52.05N 94.17E), ca. 50 km NW Kizyl city, Tuva district, Russia, and about 200 km north of the border to the eastern part of Mongolia; altitude ca. 800–1000 m (triangle in Figs. 13 and 14 ). We had the opportunity to study one male paratype ( Fig. 3 ) and two female paratypes (CHH, CHF). This is the largest of the five species of the complex ( Pederzani 2001: 238 provided: TL: 3.70–3.88 mm, TL/MW: 1.94–2.03). Additionally, it has the entire upper surface shiny and, thus, cannot be mixed up with H. sejilashan sp. n. As in H. tibetanus and H. sejilashan sp. n. the anterior protarsal claw is simple and more or less shaped as the posterior one. Pederzani (2001: 216) reported seven females from Mongolia with doubtful identities, which are distinctly smaller than the "normal" H. tuvaensis . We have studied these and a few further similar specimens (CHF, CHS, CJH, NMB) from that region—including males—and are not yet sure about their identity.

Figures

FIGURE 13. Distribution of: Hydroporus acutangulus (circles), Hydroporus polaris (squares), Hydroporus tuvaensis (triangle), Hydroporus tibetanus (stars), and Hydroporus sejilashan sp. n. (encircled star); the circle with question mark refers to the type locality of Hydroporus sumakovi (see text). Red squares indicate capitals of countries / provinces or other important and well-known cities.

FIGURE 14. Distribution of (enlarged map): Hydroporus tuvaensis (triangle), Hydroporus tibetanus (stars), and Hydroporus sejilashan sp. n. (encircled star). Red squares indicate capitals of countries / provinces or other important and well-known cities.

FIGURES 1 – 5. Habitus of: (1) Hydroporus acutangulus, (2) Hydroporus polaris, (3) Hydroporus tuvaensis, (4) Hydroporus tibetanus (lectotype), (5) Hydroporus sejilashan sp. n.