taxonID	type	description	language	source
03BB930FF13AF960FF5A46AAAA49FA2D.taxon	materials_examined	Material examined. One specimen found from mosses at Seorim-ri, Seo-myeon, Yangyang-gun, Gangwon-do, 37 ° 57 ′ 35.8 ″ N, 128 ° 31 ′ 0.8 ″ E, on 27 June 2021.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF960FF5A46AAAA49FA2D.taxon	diagnosis	Diagnosis. Rostrum long; twice as long as its width. Pharyngeal tube very long and wavy; one and half as long as trophi length. Gastric glands big, very long and filled with coarse granules. Preanal pseudosegment constricted posteriorly. Anal pseudosegment plump anteriorly and tapering gradually to foot. Foot short. Spurs short, conical and with wide interspace; interspace one and half times as wide as spur base.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF960FF5A46AAAA49FA2D.taxon	description	Measurements. Total length in creeping 211 - 215 μm. Greatest trunk width in creeping 26 - 28 μm. Greatest rump width in creeping 24 - 26 μm. Greatest neck width in creeping 26 - 28 μm. Spur length 5 μm.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF960FF5A46AAAA49FA2D.taxon	discussion	Remarks. One of the significant diagnostic characteristics of H. soror is the big and long gastric glands, which are filled with coarse granules. In bdelloids, gastric glands are usually round, and much smaller than mastax. In H. soror, the gastric glands are long, narrow sac-shaped, and much longer than trophi length. This species has been reported from Brazil (Donner, 1980) after the original description from Austria by Donner (1950). The present study is the third report of this species globally, and the first one from Asia. World distribution. Austria, Brazil and Korea. Deposition. Deposited in the collection of the Nakdonggang National Institute of Biological Resources, Sangju-si, Gyeongsangbuk-do, Korea (NNIBR 2021523 IV 8274).	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF963FCE345C8AA95F926.taxon	materials_examined	Material examined. Two specimens from mosses and soil at Budong-myeon, Cheongsong-gun, Gyeongsangbuk-do, 36 ° 18 ′ 57.3 ″ N, 129 ° 13 ′ 23.8 ″ E, on 18 Sep. 2021.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF963FCE345C8AA95F926.taxon	diagnosis	Diagnosis. Rostral lamella short and round. Rostrum thick and short. Antenna pseudosegment round laterally. Pharyngeal tube slightly longer than trophi length. Corona much narrower than cingulum. Sulcus very narrow. Pedicel high. Upper lip two layered; upper layer lower than trochal discs, thin and triangle-shaped; much narrower than lower layer; lower layer arched, narrow and much lower than upper layer; cingulum rimmed by lower layer. Trunk, rump and foot granulated. Spurs conical and with very narrow interspace.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF963FCE345C8AA95F926.taxon	description	Measurements. Total length in creeping 179 - 190 μm. Total length in feeding 146 - 157 μm. Greatest trunk width in creeping 24 - 28 μm. Greatest trunk width in feeding 42 μm. Greatest rump width in creeping 20 - 22 μm. Corona width 13 - 14 μm. Cingulum width 21 μm. Cingulum pad width 20 μm.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13AF963FCE345C8AA95F926.taxon	discussion	Remarks. Habrotrocha thienemanni rubella is distinguished from H. t. thienemanni Hauer, 1924 by the following characteristics: (1) corona is slightly wider than cingulum in H. t. thienemanni, while it is much narrower than cingulum in H. t. rubella and (2) the pedicel of H. t. rubella is higher than that of H. t. thienemanni. Donner (1951) described that the body color of H. t. rubella was always reddish brown. However, the body color of the Korean specimens was pale instead of reddish brown. This subspecies-level taxon was not found again after the original description from Austria by Donner (1951). Therefore, the present study is the second report of this subspecies. New to Asia as well. World distribution. Austria and Korea. Deposition. Deposited in the collection of the Nakdonggang National Institute of Biological Resources, Sangju-si, Gyeongsangbuk-do, Korea (NNIBR 2021523 IV 8275).	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF139F965FC8D4732AE54F93E.taxon	materials_examined	Material examined. One specimen found from leaf litter and soil at Gyeongpo Wetland, Unjeong-dong, Gangneungsi, Gangwon-do, 37 ° 47 ′ 32.0 ″ N, 128 ° 54 ′ 14.2 ″ E, on 3 June 2021.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF139F965FC8D4732AE54F93E.taxon	diagnosis	Diagnosis. Rostrum short. Rostral lamella very short and without median notch. Corona slightly narrower than cingulum. Sulcus very narrow; trochal discs and pedicels almost attached. Pedicel very short. Upper lip arched; median lobe truncated and slightly wavy; lower than trochal discs. Antenna short; about 1 / 4 of neck width. Teeth 6 / 6. Foot with 4 pseudosegments; much narrower than rump. Spurs conical and with narrow interspace; interspace much narrower than spur base width.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF139F965FC8D4732AE54F93E.taxon	description	Measurements. Total length in creeping 264 μm. Total length in feeding 185 μm. Corona width 28 μm. Cingulum width 25 μm. Cingulum pad width 31 μm. Greatest trunk width in feeding 71 μm. Spur length 7.5 μm.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF139F965FC8D4732AE54F93E.taxon	discussion	Remarks. The characteristics of the Korean specimen agree well with the original description except the length of the spurs. The spurs were as long as the spur base width in the original description, while that of the Korean specimen was slightly longer than the spur base width. Milne (1916) mentioned that there was a band or ridge which was parallel to the anterior margin of the upper lip. The same structure was observed in the Korean specimen, and it turned out to be the disc retractor, even though Milne (1916) thought it was a part of upper lip. This species was not found again after the original description from South Africa in 1916. The present study is the second report of this species. World distribution. South Africa and Korea. Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea (VSJAIV 0000000398).	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13FF964FF64477AACAFFA88.taxon	materials_examined	Material examined. Three specimens from mosses at Banjeong, Daegwallyeong, Hoenggye-ri, Daegwalnyeongmyeon, Pyeongchang-gun, Gangwon-do, 37 ° 41 ′ 44.7 ″ N, 128 ° 45 ′ 49.6 ″ E, on 4 Oct. 2021.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13FF964FF64477AACAFFA88.taxon	diagnosis	Diagnosis. Rostrum much narrower than head in creeping. Upper lip arched, bilobed medially, and lower than trochal discs. Corona much wider than cingulum. Sulcus as wide as pedicel width. Cingulum pad slightly expanded anterolaterally. Two small eye spots. Pharyngeal tube slightly shorter than trophi length. Teeth 3 + 1 / 1 + 3. Last trunk pseudosegment round squarish posteriorly. Anal pseudosegment much narrower than a half of the greatest trunk width in creeping. Foot with four pseudosegments. Spurs long, thin and divergent; interspace slightly wider than spur base width.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13FF964FF64477AACAFFA88.taxon	description	Measurements. Total length in creeping 202 μm. Total length in feeding 167 μm. Greatest trunk width in creeping 52 μm. Corona width 43 - 44 μm. Cingulum width 35 μm. Cingulum pad width 36 - 38 μm. Spur length 8 μm.	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
03BB930FF13FF964FF64477AACAFFA88.taxon	discussion	Remarks. Milne described this subspecies-level taxon, Philodina nitida nitida, with a variety, P. n. var. decens (Milne, 1916). The major difference between P. n. nitida and P. n. decens is in the morphology of feeding head. The ratio of corona width to cingulum width is 1.25: 1 in P. n. nitida, while it is 1.5: 1 in P. n. decens. In addition, the median notch on upper lip is narrow in P. n. nitida, while it is wide in P. n. decens. Haigh (1965) reported P. nitida from New Zealand. In the illustration of the feeding head, the median notch was very wide, which implied that the New Zealand specimens were P. n. decens. Therefore, the present study rediscovered P. n. nitida 105 years after the original description from South Africa. Partial mtCOX 1 was amplified using DNA extracted from one specimen of P. nitida nitida. One sequence (672 bp in length) was obtained and submitted to GenBank un- der accession number OP 644282. World distribution. South Africa, Korea. Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea (DSEVIV 0000003943).	en	Song, Min Ok, Lee, Chang-Ho (2023): Four bdelloid rotifers new to Korea. Journal of Species Research 12 (2): 115-121, DOI: 10.12651/JSR.2023.12.2.115
