Unionicola markovensis Tuzovskij 1990

• Main Authors: Tuzovskij, Petr V., Semenchenko, Ksenia A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Trombidiformes; Unionicolidae; Unionicola; Unionicola markovensis; Seta; Anadyr; Anadyr’; Magadan; Sickle; Anadyr'; Chukotka; Chukotka Autonomous Okrug
• Online Access: https://zenodo.org/record/6092193; https://doi.org/10.5281/zenodo.6092193

Unionicola markovensis Tuzovskij, 1990 (Figs 12 A–D, 13 A–D) Material examined. 2 male, 4 females: Russia, Magadan Province, Tenkinsky District, small lakes near village Agrobasa, June–July 1979; 1 female, Chukotka Autonomous Okrug, Anadyr District, small lake near settlement Markovo, 29.07. 1981, leg. P.V. Tuzovskij. All males and females are collected free-swimming. Diagnosis. Adults. Dorsum with two pairs of unequal platelets; medial margin of coxal plates III+IV straight and longer than their width; P- 3 with two subequal setae, base of lateral seta located proximally to middle of segment, P- 4 with very long lateral tubercle and two relatively short ventrolateral tubercles, P- 5 curved; anterior plates of female with long, thick unequal medial setae, posterior plates with long, thick medial setae; genital plates of male relatively narrow, fused to each other by posterior ends only; swimming setae on IV-Leg- 5 slightly shorter than IV-Leg- 6; claws of legs I thick, hook-like, claws of legs II–IV thin, sickle-shaped. Description. Both sexes. Dorsum with two pairs of unequal platelets (Fig. 12 A), anterior platelets relatively large, elongate; posterior platelets oval or circular and considerably smaller than anterior ones. Anterior and posterior coxal groups (Fig. 12 B) divided by wide interspace; sclerites, bearing setae and glandularia Le, much larger than sclerites bearing other idiosomal setae. Apodemes of first coxal group reaching or slightly extending beyond to anterior margin of third coxae. Coxal plates III+IV elongated (L/W ratio 1.3–1.8) with straight medial margin, posterior margin of coxal plate IV oblique directed posterolaterally. Surface of all coxal plates with reticulations. Pedipalps (Fig. 13 A) rather slender: P- 2 with nearly straight ventral margin with three to four proximal setae and single dorsodistal short seta; P- 3 with long lateroproximal and relatively short dorsodistal setae; P- 4 with long lateral and two relatively small subequal tubercles; bases of lateral and anterior ...