Hygrobates (Rivobates) cf. microepimeratus (Sokolow, 1934)

Pesic, Vladimir, Semenchenko, Ksenia A. & Lee, Wonchoel, 2015, Further studies on water mites from Korea, with description of two new species (Acari, Hydrachnidia), ZooKeys 507, pp. 1-24 : 5-6

Taxon classification Animalia Trombidiformes Hygrobatidae

Hygrobates (Rivobates) cf. microepimeratus (Sokolow, 1934) Fig. 7

Rivobates microepimeratus Sokolow 1934: 356. Synonymy.

Material examined.

SOUTH KOREA: CR20 Chungcheongbuk Province, Mt. Vorak, Deokjusanseong, stream, 36°51.705'N, 128°06.030'E, 25.v.2013 Pešić & Karanović 0/1/0 (mounted).

Remarks.

The single female from this study matches the general morphology of Hygrobates microepimeratus (Sokolow, 1934) a species described from the Primory Territory in the Russian Far East ( Sokolow 1934), and later on reported by Chung and Kim (1997) from Korea. This species is known from a female only making it difficult to separate from other similar species, i.e. Hygrobates ezoensis Uchida, 1934 (Russia: Sakhalin, Japan: Hokkaido) and Hygrobates taniguchii Imamura, 1954 (Japan, Hokkaido). In the original description Sokolow (1934, 1940), in addition to more slender P-3 (compared with Hygrobates diversiporus ), gave particular weight to the smaller dimensions of coxae which occupy one third of venter. According to Imamura (1954) Hygrobates taniguchii differs from Hygrobates microepimeratus in larger coxae. Hygrobates ezoensis differs in P-2 with a more pronounced and acute ventrodistal projection and stouter P-3 (see Matsumoto et al. 2005).

Distribution.

Far East of Russia (Primory Territory - Sokolow 1934), Korea ( Chung and Kim 1997, this study).