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.