Wandesia (Wandesia) reducta Tuzovskij, 1987

Semenchenko, Ksenia A., 2016, New water mites species (Acariformes: Hydrachnidia) from interstitial waters of the Russian Far East, Zootaxa 4097 (4), pp. 545-556 : 546-547

Wandesia (Wandesia) reducta Tuzovskij, 1987

( Figs 1A–C )

Wandesia (Wandesia) reducta Tuzovskij, 1987: 39 , figs 3–4.

Wandesia (Wandesia) reducta — Pešić, Semenchenko & Lee, 2015: 3 , fig. 1.

Material examined. Russia: Primory Territory, Artemovsky Urban District, Steklyanukha River, N 43°21.027’; E 132°27.723’; depth 30 cm below the sediment surface; substrate: cobbles, pebbles, coarse- and medium-grained sand; 12.06.2010, leg. K.A. Semenchenko, D.A. Sidorov (1 male, 4 females); Partizansky District, Partizanskay River basin, Tigrovaya River, N 43°11.401’; E 133°12.660’; depth 30 cm below the sediment surface; substrate: cobbles, pebbles, sand; 12.06.2010, leg. K.A. Semenchenko, D.A. Sidorov (2 males, 1 female); Lazovsky District, Lazovka River, N 43°22.570’; E 133°53.772’; depth 30 cm below the sediment surface; substrate: cobbles, pebbles, coarse-grained sand; 11.06.2010, leg. K.A. Semenchenko, D.A. Sidorov (1 female); Jewish Autonomous Area, Oktyabrsky District, Starikova River, N 48°25.038’; E 130°45.220’; 20.08.2004, leg. K.A. Semenchenko (1 female); Amurskaya Area, Tyndinsky District, Malyj Yankan River, 3 km westward of Yankan; depth 25 cm; substrate: boulders, 17.07.2008, leg. D.V. Kotsuk (1 female). Specimens dissected and mounted on a single slides per numbers: 53, 431–433, 442, 539, 548, 549— IBSS, other specimens not mounted, in Koenike’s fluid.

Morphology. Male. Measurements (n=2). Idiosoma L 1200–1530, Cx-I+II total L 100–109, W 70–78, Cx- III+IV lateral L 84–86; Ac-1 L 26–27, W 19–22, Ac-2 L 31–32, W 19–22, Ac-3 L 36–43, W 24–26; ejaculatory complex L 94–?; pedipalpal segments (P–1–5) L: 19–22, 43–46, 40–50, 54–57, 11–12; leg segments L: I–Leg– 1– 6—44 –46, 81–89, 78–81, 94–97, 103–108, 106–108.

Remarks. W. reducta was described on the basis of female and larvae ( Tuzovskij 1987b), the male of this species is described here for the first time. Males have the same morphology as females, but have smaller idiosoma and genital field with 11–12 pairs of setae located on nearly transparent sclerites projected above Ac-1 ( Figs 1A, B ) (females have 3–5 pairs of small setae on wrinkles of integument), gonopore indistinct. Pedipalps ( Fig. 1C ) and legs as in females.

Distribution. Far East of Russia: Primory Territory (this study), Jewish Autonomous, Amurskaya and Magadan Area ( Tuzovskij 1987b; Semenchenko 2010c); South Korea ( Pešić et al. 2015).

Figures

FIGURE 1 A – C. Wandesia reducta Tuzovskij, 1987, male: A. Coxal and genital field (not all genital setae are visible). B. Genital field. C. Pedipalp, lateral view. Scale bars: A = 100 Μm, B – C = 25 Μm.