Woolastookia elongata (Sokolow, 1934) (Fig. 7 A­C) Woolastookia concava Kim & Chung, 1996, nov. syn. New records: South Korea: CR1 Seoul, Dobong stream, 37º41.262'N, 127º01.706'E, 19 m asl., 7.x.2012, Pešić & Choi 1/3/0 (1/0/0 mounted); CR4 Gangwon Province, Seoraksan NP, stream near Temple, 38º10.399'N, 128º29.050'E, 196 m asl., 8.x.2012, Pešić & Karanović 9/10/0 (1/0/0 mounted); CR7 Gangwon Province, Odaesan NP, stream, 37º49.642'N 128º42.170'E, 215 m asl., 9.x.2012, Pešić & Karanović 0/3/0; CR14 Jeollabuk Province, Duckyu San NP, stream, 35º53'50''N, 127º46'35''E, 11.x.2012, Pešić & Choi 1/1/0; CR18 Gyeongsangbuk Province, Haenggok­ri, river, exposed to sunlight, 36º57.182' N, 129º17.670' E, 24.v.2013 Pešić & Karanović 1/0/0; CR19 Chungcheongbuk Province, Sobaeksan NP, shadded stream, 36º57.660' N, 128º25.534' E, 24.v.2013 Pešić & Karanović 0/1/0; CR21 Chungcheongbuk Province, Woraksan National Park, Jungseonam, river, 36º52.644' N, 128º17.784' E, 25.v.2013 Pešić & Karanović 0/12/0; CR22 Gangwon Province, Chiaksan NP, Silim town, stream, 37º17.081' N, 128º15.389' E, 25.v.2013 Pešić & Karanović 0/2/0. Records from Korea: Gyeongsangbuk Province – “ Woolastookia spatulata “ Kim and Chung (1996), “ W. concava “ Kim and Chung (1996); Gangwon Province – “ W. concava “ Kim and Chung (1996). Remarks: Kim and Chung (1996) described W. concava from the type locality of W. spatulata Kim & Chung, 1996, a species synonymized by Semenchenko (2010) with W. elongata. They stated that W. concava differs in the ventrally concave shape of IV­L­6. However, as mentioned by Semenchenko (2010) this character may not be suitable for species discrimination, and W. concava should be considered as a further junior synonym of W. elongata. She showed that, if the IV­L is placed in lightly lateral position, its tarsus seems to be narrower and concave ventrally (see Fig. 7C). Habitat: Rhitrobiont. Distribution: Korea, Far East of Russia.

Published as part of Pešić, Vladimir, 2014, Checklist of the water mites (Acari, Hydrachnidia) of Korea, with description of one new subgenus and two new species, pp. 204-230 in Ecologica Montenegrina 1 (4) on page 221, DOI: 10.37828/em.2014.1.29, http://zenodo.org/record/8029398