taxonID	type	description	language	source
039687B70E07906BFCA763E34651F917.taxon	diagnosis	Diagnosis: Mature spore spherical with a smooth surface, fine sutural line, 15.3 ± 0.4 (14.7 – 15.7) in length, 15.7 ± 1.0 (14.7 – 16.7) in width, 15.0 ± 0.4 (14.7 – 15.3) in thickness; two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 2.9 ± 0.2 (2.7 – 3.0) in diameter; fine sporoplasm with one binuclear posteriorly in spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	biology_ecology	Host and site of infection: Gall bladder of Sebastes schlegeli Hilgendorf, 1880.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	materials_examined	Type locality: Coastal cultural waters off Jiaonan (35 ° 48 N, 119 ° 54 ′ E), Yellow Sea, China. Salinity about 31 ‰, water temperature about 15 ° C Prevalence: Of the three fish examined, two were infected (67 %). Date of sampling: June 2, 1999.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	biology_ecology	Host symptom: The bile color of the infected gall bladder changed into yellowish and the cultured fish, Sebastes schlegeli died possibly due to myxosporean infection combined with monogeneans. Meanwhile, another three species of monogeneans lived in the gill filaments of the same host.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll.: No. jn- 199900602 a), and a paratype slide stained with Giemsa (Coll.: No. jn- 199900602 b), were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E07906BFCA763E34651F917.taxon	description	Description: A vegetative stage was not observed. The mature spore was spherical and smooth with a straight sutural line; there were two smaller polar capsules, spherical, about equal in size and located anteriorly in a plane perpendicular to the sutural line. Sporoplasm with two mononuclears positioned posteriorly in the spore cavity (Figs 1 A – E, 5 A – B). An iodinophilous vacuole was not evident in the sporoplasm nor a mucous envelope around the spore. Measurements of spores are given in Table 1 (n = 25). Comparison and comments: To date, over 50 species of Sphaerospora have been isolated from marine and freshwater fish, with most of these being coelozoic and parasitizing in the urinary bladder or renal tubules and ureters and so on, occasionally in the gall bladder (Arthur and Lom 1985, Supamattaya et al. 1991, Sitja-Bobadilla and Alvarez-Pellltero 1994, Chen and Ma 1998), 17 of these 50 species were from marine or brackish waters. Considering the site of infection, the new species is different from many Sphaerospora species in that our organism parasitized in the gall bladder of marine fish, and also in its spherical mature spore with a smooth surface, fine sutural line; two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, fine sporoplasm with one binuclear posteriorly in the spore cavity. The comprehensive spore-body characters of the current organism is different to any other known-species of the genus Sphaerospora. The current species, therefore, is considered a new species. Family Ceratomyxidae Doflein, 1899 Genus Ceratomyxa Thélohan, 1892	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	diagnosis	Diagnosis: Trophozoites not observed; mature spore roughly crescent-shaped, anterior margin extremely convex and posterior margin concave; ends of valves rounded with smooth surface, sutural line fine, 20.6 ± 1.6 (19.4 – 22.5) in thickness, 10.2 ± 0.3 (10.0 – 10.5) in length, posterior angle deeply concave (65 – 125 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 2.9 ± 0.2 (2.5 – 3.1) in diameter; granular sporoplasm with one binuclear posteriorly in spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	biology_ecology	Host and site of infection: Gall bladder of Sebastiscus sp.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	materials_examined	Type locality: Coastal waters of the Yellow Sea off Qingdao (36 ° 08 ′ N, 120 ° 43 ′ E) in China. Salinity about 32 ‰, water temperature about 14 ° C. Prevalence: Only one fish was obtained and infect- ed (100 %). Date of sampling: June, 2, 1999.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	biology_ecology	Host symptom: No symptom although with high infection intensity.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll.: No. qd- 19990602 a), and a paratype slide stained with Giemsa (Coll.: No. qd- 19990602 b), were deposited at the Collection Centre of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E029068FF0A66C04140FACA.taxon	description	Description: Trophozoites were not observed. Mature spore was roughly crescent shaped, anterior margin extremely convex and posterior margin concave, ends of valves rounded with a straight sutural line and smooth shell surface from the sutural view (Figs 1 F – H, 5 C); posterior angle was deeply concave (65 – 125 °). Two smaller spherical polar capsules of equal size positioned anteriorly in a plane perpendicular to the sutural line, in which the polar filament has two coils, and a granular sporoplasm with one binuclear located posteriorly in the spore cavity (Figs 1 F – H, 5 C). No mucous envelope was evident around the spore. Measurements of spores are given in Table 2 (n = 20). Comparison and comments: In 2010, Gunter and Adlard proposed the demise of Leptotheca and reassigned all its current species to Ceratomyxa, Ellipsomyxa, Myxobolus Bütschli, 1882 or Sphaerospora on the basis of appropriate morphological and biological traits and suggested that the present organism should be transferred into the genus Ceratomyxa. According Ceratomyxa spp. Shape and size of spore Size of polar capsule Host and location Locality Data resources C. kareus sp. n. SP crescent, anterior margin very concave and posterior D: 4.3 ± 0.8 (3.5 – 5.3) Kareius icoloratus, Yellow Sea present study convex; valves with rounded ends. Zebrias zebra, (Rongcheng and T: 43.2 ± 3.4 (38.2 – 46.0), gall bladder Qingdao, China) L: 10.9 ± 0.8 (10.0 – 11.8) C. platichthytis SP anterior margin very concave and posterior convex; (Fujita, 1923) valves with rounded ends. T: 34.5 ± 1.4 (32.9 – 36.8), L: 7.7 ± 0.6 (7.1 – 8.2) C. platichthytis SP anterior margin concave and posterior convex; valves (Fujita, 1923) with rounded ends. T: 23.4 – 3, L: 9.1 – 13 D: 3.5 ± 0.7 (2.9 – 4.5) Paralichthys olivaceus, Yellow Sea (Culture gall bladder in Qingdao temporarily from Korea) PC spherical Platichthys stellatus, Oshoro and Ishikari, D: 3.9 – 4.5 gall bladder Japan (Sea of Japan) Zhao and Song 2003 a Fujita 1923 C. saurida sp. n. SP arciform, anterior strongly convex and posterior strongly D: 3.6 ± 0.4 (3.0 – 4.0) Saurida elongata, Yellow Sea concave; valves equal with rounded ends gall bladder (Rizhao and Qingdao) T: 42.7 ± 2.5 (39.5 – 47), L: 9.7 ± 0.5 (9.0 – 10.5) present study C. diloba SP very arched; anterior strongly convex and posterior Dogiel, 1948 strongly concave; valves equal with rounded ends. T: 20, L: 7 – 8 PC spherical Sphaeroides rubripes, Sea of Japan (Russia) D: 3 S. pardalis. gall bladder quoted from Shulman 1966 C. sebastisca sp. n. Spore large, anterior arched and posterior margin strongly PC spherical Sebastiscus sp., Yellow Sea concave, with rounded ends; D: 2.9 ± 0.2 (2.5 – 3.1) gall bladder (Qingdao) T: 20.6 ± 1.6 (19.0 – 22.5), L: 10.2 ± 0.3 (10.0 – 10.5) C. macrospore Spore large, anterior arched and posterior slightly concave, PC spherical Sebastes viviparous, Bergen, Kristiansund population 1 with rounded ends. D: 5.2, PF: 130 gall bladder T: 26.0, L: 13.0 C. macrospore Spore large, anterior arched and posterior slightly concave, – Sebastes marinus, North Sea, Northern population 2 with rounded ends. S. viviparus, Atlantic Ocean T: 26.0, L: 10.5 gall bladder present study Auerbach 1909 Kalenscher 1926 C. macrospora SP large, posterior slightly concave with rounded ends. population 3 T: 21.0 – 27.0, L: 12.0 – 15.0 C. polymorpha SP round; anterior margin arched and posterior concave, Syn. Leptotheca with rounded ends; valves equal. polymorpha T: 18 – 20, L: 10 – 12 PC spherical Sebastiscus marmoratus, Yellow Sea D: 3.0 – 4.0 gall bladder (Rongcheng and Weihai) PC pyriform Phycis phycis Off France L: 3.0, W: 2.5 (= P. mediterranea), gall bladder Zhao and Song 2009 Kudo 1919 C. lovei SP anterior arched and posterior moderately to deeply con- PC spherical Sebastes serranoides, Off California Syn. Leptotheca sebasta cave; valves equal with rounded ends. D: 3.5 (3.0 – 4.0) gall bladder T: 13.8 (13.0 – 15.0), L: 8.0 (7.5 – 8.5) C. shasta Anterior margin very convex and posterior very concave; PC spherical Oncorhynchus mykiss freshwater (USA) Noble, 1950 SP strongly arched; valves broadly rounded. D: 2.2 T: 14 – 17, L: 6 – 8 Moser et al. 1976 Noble 1950 to the ICZN Article 16 (1999), Leptotheca sebastisci Zhao and Song, 2003 remains invalid, it has been never formally reported as a new taxon. So it is the first report as a new one of genus Ceratomyxa in the present work. With regard to the originally confused problems for genus Leptotheca and Ceratomyxa, our attention has to focus on the characters of family Ceratomyxidae. Only to clarify the relationship between Leptotheca and Ceratomyxa, we can find out the reason for establish- ment of the new species. In the family Ceratomyxidae, most members are coelozoic, generally infecting the gall bladders of marine fish hosts. The family contains four genera: Ceratomyxa Thelohan, 1892, Leptotheca Thelohan, 1895, Meglitschia Kovaleva, 1988 and Ellipsomyxa Koie, 2003. The diagnosis characteristics of the genus Ceratomyxa Thelohan, 1892 is that the spores are crescent-shaped or arcuate, and with elongated shell valves generally thicker than they are long (Lom and Dyková 2006). There are about 200 Ceratomyxa species described to date, which comprise almost 8 % of the known diversity of myxosporeans (Zhao and Song 2003 c, Eiras 2006, Lom and Dyková 2006, Reed et al. 2007, Abdel-Ghaffar et al. 2008, Heiniger et al. 2008, Gunter and Adlard 2009, Gunter et al. 2009). Recently, Gunter et al. transferred 43 species of Leptotheca into the genus Ceratomyxa (Gunter et al. 2010), meaning that Ceratomyxa now contains over 250 species. The modified diagnosis for Ceratomyxa: Spores generally crescent-shaped or arcuate; shell valves conical or barrel-shaped and significantly exceeding in length half of the axial diameter of the spore. Sub-spherical or spherical polar capsules located anteriorly in a plane perpendicular to the sutural line and open close to it, but exceptionally open laterally from the central suture line. A binucleate or two uninucleate sporoplasm may fill spore cavity completely. Trophozoites monoporic, disporic or polysporic. Usually coelozoic parasites of marine fishes, exceptionally in freshwater and rarely histozoic (Lom and Dyková 2006, Gunter et al. 2010). Based on the comments above, all the morphological characters of the present species conforms with the modified diagnosis for genus Ceratomyxa, hence, here it is regarded as one new Ceratomyxa species in this work. Considering the morphology of the spore-body, the current organism is superficially similar to Ceratomyxa macrospora (Auerbach 1909), Ceratomyxa polymorpha (Labbė 1899), Ceratomyxa lovei (Moser et al. 1976) and C. shasta Noble, 1950, but the new taxon differs from C. macrospora as follows: a smaller spore-body 19.4 – 22.5 × 10.0 – 10.5 (vs. 21.0 – 27.0 × 12.0 – 15.0 for C. macrospora), smaller polar capsules, 2.5 – 3.0 in diameter (vs. 3.5 – 5.0 in diameter for C. macrospora); sporoplasm with granules (vs. sporoplasm fine for C. macrospora). The new species can be distinguished from C. lovei by: a roughly crescent shaped anterior margin which is extremely convex with a concave posterior margin, (vs. anterior margin convex and posterior deeply to moderately concave for C. lovei), the larger spore-body 19.4 – 22.5 × 10.0 – 10.5 in size (vs. 13.0 – 15.0 × 7.5 – 8.5 in size for C. lovei), the smaller polar capsules, 2.5 – 3.1 µm in diameter (vs. 3.0 – 4.0 µm in diameter for C. lovei). Comparing the new organism and C. polymorpha, meanwhile, the former exhibits a thicker and smaller spore than C. polymorpha (19.4 – 22.5 × 10.0 – 10.5 µm vs. 18 – 20 × 10 – 12 µm) and a sporoplasm with granules (vs. sporoplasm fine for C. polymorpha). The current species differs from C. shasta in that the former exhibits a larger spore-body than C. shasta (19.4 – 22.5 × 10.0 – 10.5 vs. 14 – 17 × 6 – 8) and a larger polar capsule (2.9 ± 0.2 (2.5 – 3.1) in diameter vs. 2.2). Moreover, the five Ceratomyxa species were obtained from different hosts and geographic areas: C. polymorpha from Phycis phycis off France; C. lovei from Sebastes serranoides in coastal waters off California; C. macrospora from Sebastesviviparus and S. dactylopterus in Bergen and California; from Sebastes viviparous, S. serranoides, Sebastes marinus in the North Sea and Northern Atlantic Ocean and Sebastes schlegeli, Sebastiscus marmoratus in the Yellow Sea, respectively (Zhao and Song 2009). C. shasta, meanwhile, is a freshwater species found in Oncorhynchus mykiss in the USA. Fi- nally, our new taxon is found from Sebastiscus sp. in the Yellow Sea, China. Based on this our species is considered as a new member of the genus Ceratomyxa.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	diagnosis	Diagnosis: Trophozoites monosporous or disporous; mature spore large and strong spore with a smooth surface and a clearly distinguished sutural line, one binuclear sporoplasm and two equal spherical polar capsules positioned anteriorly; 83.0 ± 3.3 (80.0 – 88.9) in thickness, 9.2 ± 0.3 (8.8 – 9.5) in length, posterior angle slightly concave to straight (162 – 170 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 4.8 ± 0.2 (4.0 – 5.0) in diameter, polar filament 114.0 – 132.0 in length; sporoplasm with one binuclear located posteriorly in spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	biology_ecology	Host and site of infection: Gall bladder of Hemitripterus villosus Pallas, 1811.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	materials_examined	Type locality: Coastal waters of the Yellow Sea, off Qingdao (36 ° 08 ′ N, 120 ° 43 ′ E) of the Yellow Sea. Salinity about 32 ‰, water temperature about 13 ° C. Prevalence: Of the four fish examined, one was infected (25 %). Date of sampling: May 27, 1998.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	biology_ecology	Host symptom: No symptom.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll.: No. qd- 19980527 a), and a paratype slide stained with Giemsa (Coll.: No. qd- 19980527 b), were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E019067FCA7658F40A7FC34.taxon	description	Description: Plasmodia were irregular in shape, and contained different stages of developing spores. Plasmodia at an earlier stage of development usually appeared to be an amoeba with one finger-like pseudopod, ca. 43.0 × 13.0 in size; the late stage of the trophozoites (plasmodia) exhibited a peripheral layer of hyaline non-granular ectoplasm and thick granular endoplasm (Plane 12, figure 5), enclosing one or two developing spores; in vivo cells always showed a monosporous or disporous plasmodium (Figs 1 K – L, N – O, 5 D – E), measuring 42.0 × 15.6 µm in size. Spore large, body of mature spores straight or bent appreci- ably in shape from a sutural view; sutural line straight and distinct; shell valves thin-walled barrel-shaped and slightly tapering to round tips with a smooth surface; spore cavity with binucleated sporoplasm which is often finely granulated; posterior angle slightly concave to straight (162 – 170 °); two polar capsules spherical, of about equal size and located anteriorly in a plane perpendicular to the sutural line (Fig. 1 I – J), polar filament length 114.0 – 132.0 µm. No mucous envelope evident around the spore. The measurements of the spores are given in Table 1 (n = 25). Comparison and comments: Considering the morphology of the spores, the new organism resembles C. streptospora Davis, 1917, C. robusta Fujita, 1923, C. inversa Meglitsch, 1960 and C. tenuis Fujita, 1923. Comparing with these species, the new one can be easily differentiated. C. robusta possesses wider spores and smaller polar capsules than our species; the spores of C. streptospora Davis, 1917 from the gall bladder of Chaetodipterus faber Broussonet, 1782, were only half the size of the new species (Davis 1917, Kudo 1919), while the dimensions of the spore for C. inverse is smaller than that of new species. The spore of C. tenuis Fujita, 1923 from the gall bladder of Hippoglossus stenolepis Schmidt, 1904 is similar to our species both in length and in the sizes of the polar capsules (Fujita 1923), but the thicknesses of the spores are very different (Table 2). While C. spectabilis Dogiel, 1948 has been reported to parasitize Hemitripterus villosus from the Japanese Sea, our species obviously differs from C. spectabilis Dogiel, 1948 in having an straight spore with a straight and distinct sutural line, thin-walled barrel-shaped shell valves with smooth surface. To sum up the above discussion, this species should be designated as a new member of Ceratomyxa.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0E9067FCBE63A14060F821.taxon	diagnosis	Diagnosis: Trophozoites monosporous, disporous or polysporous with long filiation pseudopod; mature spore roughly crescent-shaped, anterior margin extremely convex and posterior margin concave; ends of valves rounded with a smooth surface, sutural line fine, 43.2 ± 3.4 (38.2 – 46.0) in thickness, 10.9 ± 0.8 (10.0 – 11.8) in length, posterior angle deeply concave (110 – 136 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 4.3 ± 0.8 (3.5 – 5.3) in diameter; one binuclear sporoplasm located posteriorly in spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0E9067FCBE63A14060F821.taxon	biology_ecology	Host and site of infection: Type host: Kareius bicoloratus (Basilewsky 1855), other host: Zebrias zebra (Bloch 1787); site of infection: gall bladder.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0E9067FCBE63A14060F821.taxon	materials_examined	Type locality: Kareius bicoloratus from coastal waters off Rongcheng (37 ° 18 ′ N, 12242 ′ E), salinity about 32 ‰, water temperature about 13 ° C in Rongcheng; other locality: Zebrias zebra from coastal waters of the Yellow Sea off Qingdao (36 ° 08 ′ N, 120 ° 43 ′ E) of the Yellow Sea, China, salinity about 32 ‰, water temperature about 14 ° C in Qingdao.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	diagnosis	Diagnosis: Trophozoites disporous, 18.7 × 12 µm in size; mature spores kidney shape, shell-valves with smooth surface, sutural line fine, 16.7 ± 1.2 (15.3 – 18.0) in thickness, 6.8 ± 0.4 (6.3 – 7.3) in length, posterior angle concave (162 – 180 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 2.1 ± 0.2 (2.0 – 2.5) in diameter; fine sporoplasm with one binuclear located in the spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	biology_ecology	Host and site of infection: Gall bladder of Lateolabrax japonicus (Cuvier and Valenciennes 1828).	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	materials_examined	Type locality: Coastal aquaculture waters off Jiaonan (35 ° 48 ′ N, 119 ° 54 ′ E) of the Yellow Sea, China. Salinity about 31 ‰, water temperature about 15 ° C. Prevalence: Of the four fish examined, one was infected (25 %). Date of sampling: June 2, 1999.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	biology_ecology	Host symptom: Mix-infected with Ceratomyxa lomi sp. n., from only one fish host infected Ceratomyxa lateolabracis sp. n., pathogenicity unknown.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	materials_examined	Type material: The holotype on an air-dried slide stained with Giemsa (Coll.: No. jn- 19990602 a), and a paratype slide stained with Giemsa (Coll.: No. jn- 19990602 b), were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0C9064FF0A66C44624F8B1.taxon	description	Description: Early stage plasmodia were not seen; later stages exhibited a peripheral layer of hyaline non-granular ectoplasm and thick granular endoplasm (Fig. 3 F), enclosing the two developing spores, and were 18.7 × 12 µm in size. Mature spores: anterior margin slightly convex and posterior more or less concave; kidney shaped, shell-valves equal with a smooth surface and rounded ends from a sutural view, evident suture line (Fig. 3 G – J), posterior angle was concave (162 – 180 °). Two equal spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line; one binuclear sporoplasm located in spore cavity. No mucus appendage surrounded the spore. Measurements of spores are given in Table 2 (n = 20). Comparison and comments: Considering the shape and size of spore, the current species resembles C. dubia Dunkerly, 1921, but the ratio of thickness to length for the new species is slightly larger than that of C. dubia (2.5 vs. 2.2), moreover, the hosts and geographic distribution are different for the two parasites (Lateolabrax japonicus from China off the Yellow Sea vs. Cottus dubalis from Plymouth, UK). In addition, this organism is easily distinguished from the other species of the genus Ceratomyxa, and can therefore be considered a new species for which the name Ceratomyxa lateolabracis sp. n. is proposed.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	diagnosis	Diagnosis: Trophozoites disporous; elongat- ed forked to strongly arcuate mature spores with shell-valves often conical, exceeding in length the axial diameter of the spore; ends of valves tipped with a smooth surface; sutural line fine, 58.0 ± 8.1 (49.0 – 69.0) in thickness, 5.2 ± 0.9 (4.0 – 6.0) in length, posterior angle extremely concave (115 – 135 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 2.7 ± 0.2 (2.5 – 3.0) in diameter, polar filament 40.0 – 48.0 in length; fine sporoplasm with one binuclear in spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	materials_examined	Type host and site of infection: Gall bladder of Lateolabrax japonicus (Cuvier and Valenciennes 1828). Type locality: Rongcheng (37 ° 18 ′ N, 12242 ′ E) natural water and coastal aquaculture waters off Jiaonan (35 ° 48 ′ N, 119 ° 54 ′ E) of the Yellow Sea, China. Salinity about 31 – 32 ‰, water temperature about 12 – 15 ° C. Prevalence: Of the one fish examined from Rongcheng, one was infected (100 %); of the four fish examined from Jiaonan, two were infected (50 %). Date of sampling: April 26, 1999 and June 2, 1999.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	biology_ecology	Host symptom: Many plasmodia and spores massed and floated in gall bladder, and epithelial cells of blad- der wall exfoliated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll.: No. rc- 19990426), and a paratype slide stained with Giemsa (Coll.: No. jn- 19990602), were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	etymology	Etymology: We dedicate this new species to our distinguished colleague, Dr Jirí Lom, Institute of Parasitology, Academy of Sciences of the Czech Repub- lic, in recognition of his academic contributions to myxosporology.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0D9063FFF367254130FB83.taxon	description	Description: Early stage plasmodia were not seen. Later stages exhibited a peripheral layer of hyaline non-granular ectoplasm containing two developing spores non-mirror arranged, arcuate in shape and 50 × 14 µm in size; trophozoites disporous (Fig. 3 E). Spores typical of the genus Ceratomyxa. Elongated forked to strongly arcuate mature spores with shell-valves often conical, exceeding in length the axial diameter of the spore; ends of valves tipped with a smooth surface, sutural line fine, nearly straight from capsular view (Fig. 3 A); anterior margin extremely convex and posterior margin strongly concave from a sutural view (Fig. 3 B – D); the two valves were smooth and equal with two strongly tapering ends. Posterior angle extremely concave (115 – 135 °). Two equal furiform polar capsules positioned anteriorly in a plane perpendicular to the sutural line; one binuclear sporoplasm which is often finely granulated located in the spore cavity; without iodinophilous vacuole. No mucous envelope evident around the spore. Measurements of spores are given in Table 2 (n = 20). Comparison and comments: Considering the shape and size of the spore, the new species is similar to C. daysciaenae, isolated from a bayou of the Hooghly River in West Bengal, India (Sarkar and Pramanik, 1994), but the new species is different from C. daysciaenae in having a forked-form spore-body shape with two conical theca (vs. ellipse-form spore-body central with two conical theca for C. daysciaenae). The new form is also similar to C. sagarica (Choudhury and Nandi, 1973), however, the spores of the new species without any iodinophilous vacuole in sporoplasm are more large than ones of the latter with iodinophilous vacuole in sporoplasm (49.0 – 69.0 × 4.0 – 6.0 vs. 26.5 – 36.3 × 3.3 – 4.1). Although the current species is superficially similar to C. furcata Fujita, 1923 in its spore-body, but the differences between the two species are as follows: 1) different length of spore (4.0 – 6.0 vs. 11.0 – 13.0); 2) different hosts (Lateolabrax japonicus vs. Limanda herzensteini). Up to date, only Ceratomyxa acuta Schulman, 1966 has been reported from the gall bladder of Lateolabrax japonicus. The current species differs from C. acuta in having a different spore-body shape (forked-form for the new species vs. straight form for the latter) and dimensions (49.0 – 69.0 × 4.0 – 6.0 for the species vs. 39.0 – 52.0 × 5.0 – 6.0 for C. acuta) (Table 2).	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0A9063FCBE645740FFF82C.taxon	diagnosis	Diagnosis: Trophozoites not observed; elongated crescent-shaped or arcuate mature spores with shell-valves often conical, exceeding in length the axial diameter of the spore; ends of valves rounded with a smooth surface, sutural line fine, 46.0 ± 2.8 (42.0 – 48.0) µm in thickness, 6.5 ± 0.5 (6.0 – 7.0) µm in length, posterior angle slightly concave to straight (162 – 175 °); two smaller spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line, 2.8 ± 0.2 (2.5 – 3.0) µm in diameter; fine sporoplasm with one binuclear located in the spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0A9063FCBE645740FFF82C.taxon	materials_examined	Type host and site of infection: Urinary bladder of Argyrosomus argentatus Houttuyn, 1872. Type locality: Coastal waters of the Yellow Sea off Qingdao, China (36 ° 08 ′ N, 120 ° 43 ′ E). Salinity about 32 ‰, water temperature about 14 ° C.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	diagnosis	Diagnosis: Trophozoites not observed; mature spore deeply arcuate, anterior margin extremely convex and posterior margin concave from a sutural view. Arcuate mature spore with rounded valves ends and smooth surface, sutural line fine, 42.7 ± 2.5 (39.5 – 47) in thickness, 9.7 ± 0.5 (9.0 – 10.5) in length, posterior angle concave (130 – 165 °); two smaller spherical polar capsules positioned in a plane perpendicular to the sutural line, 3.6 ± 0.4 (3.0 – 4.0) in diameter; one binuclear sporoplasm located in the spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	materials_examined	Type host and site of infection: Gall bladder of Saurida elongata (Temminck and Schlege 1846). Type locality: Coastal waters of the Yellow Sea off Qingdao, China (36 ° 08 ′ N, 120 ° 43 ′ E). Salinity about 32 ‰, water temperature about 14 ° C. Prevalence: Of the 2 fish examined, 2 were infected (100 %). Date of sampling: June 10, 1999.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	biology_ecology	Host symptom: Unknown.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll.: No. qdSe- 19990610 a), and a paratype slide stained with Giemsa (Coll.: No. qdSe- 19990610 b), were deposited in the Collection Centre of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E0B9060FCA7624C450FFEDB.taxon	description	Description: Trophozoites not seen. Mature spore deeply arcuate, anterior margin extremely convex and posterior margin concave; both ends of the valves rounded with a smooth surface, evident sutural line appearing straight from a sutural view (Fig. 4 A – G), two symmetrical theca, equal in size and smooth, with elongated and rounded ends and an evident suture line (Fig. 4 A – D, G). Posterior angle concave (130 – 165 °). Two equal spherical polar capsules positioned anteriorly in a plane perpendicular to the sutural line; one binuclear sporoplasm located partly in the spore cavity (Fig. 4 B, G). No mucus appendage surrounded the spore. Additionally, on the slides, some abnormal and immature spores were observed (Fig. 4 E – F). Measurements of spores are given in Table 2 (n = 25). Comparison and comments: Considering the morphology of the spore, the new species is similar to Ceratomyxa diloba Dogiel, 1948, but the former is different from the latter in its dimensions: such as the thickness of the spore (39.5 – 47 in new species vs. 20 – 25.0 in C. diloba), sutural diameter of the spore (9.0 – 10.5 in new species vs. 7.0 – 8.0 in C. diloba) and the diameter of the polar capsule (3.0 – 4.0 in new species vs. 3.0 in C. diloba); moreover, the new taxon is distinguished from C. diloba by its different geographic location and host (Saurida elongata from the Yellow Sea for the new organism vs. Sphoereides rubridalis and S. pardalis from the Japanese Sea for C. diloba). To sum up the above, the present myxosporean is considered to be a new taxon.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	diagnosis	Diagnosis: Trophozoites monosporous; 15 – 17 × 11 – 12 µm in size; mature spore crescent-shaped from a sutural view, sutural line straight and clear; anterior edge of spore is parallel to and almost symmetrical with the posterior edge of spore; 14.5 ± 1.5 (13 – 17) in thickness, 5.7 ± 0.5 (5.0 – 6.3) in length, posterior angle concave (112 – 165 °); two pyramidal polar capsules positioned in a plane perpendicular to the sutural line, 2.1 ± 0.2 (2.0 – 2.5) × 1.9 ± 0.1 (1.5 – 2.0) in size.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	materials_examined	Type host and site of infection: Gall bladder cavity of Chirolophis japonicus Herzenstein, 1890 (Syn. Azuma emmnius Jordan and Snyder, 1902). Type locality: Coastal waters off Qingdao (36 ° 08 ′ N, 120 ° 43 ′ E), China. Salinity about 32 ‰, water temperature about 12 – 13 ° C. Prevalence: Of the nine fish examined one was infected (11 %). Date of sampling: June 22, 1998.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	biology_ecology	Host symptom; Unknown.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll. No.: qd- 19980622 a), and a paratype slide stained with Giemsa (Coll.: No. qd- 19990622 b), were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, Chongqing, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	etymology	Etymology: The name “ simplex ” refers to the simple body structure of the myxosporean.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E099060FFF36184476EFAF6.taxon	description	Description: Trophozoites: early stage plasmodia were not seen; later stages exhibited a developed spore, trophozoites monosporous; 15.0 – 17.0 × 10.6 – 12.0 in size (Fig. 4 K – L). Mature spores were crescent-shaped from a sutural view, sutural line was straight and clear. The anterior edge of spore was parallel to and almost symmetrical with the posterior edge of the spore, the both ends of spore were truncated; two shell-valves were smooth and symmetry, the length of each shellvalve laterally prolonged and exceeded the axial diameter of the spore (measured from the midpoint of the suture to the most distant point of the valve). Posterior angle was concave (112 – 165 °); two pyramidal polar capsules positioned in a plane perpendicular to the sutural line. Spore cavity is filled with a binucleated mass of sporoplasm which is often finely granulated. No mucous envelope around the spore (Fig. 4 H – J). Measurements are given in Table 2 (n = 18). Comparison and comments: The morphology of the myxosporean from Azuma emmnius is closely comparable to C. etroplusi Rajendran and Janardanan, 1992 from Etroplus maculates (Bloch) from Rivulats at Irin- gal and Ramanattukara in the Calicut district of Kerala, India. Both species infect the gall bladder of piscine hosts and C. simplex corresponds to C. etroplusi Rajendran and Janardanan, 1992 in having a similar body shape. The present form differs, however, from C. etroplusi according to the original description (Rajendran and Janardanan, 1992), in having subspherical plasmodium and monosporous trophozoites, being 15.0 – 17.0 × 10.6 – 12.0 in size (vs. plasmodia with branched pseudopods, disporous trophozoites, 31.5 × 18.0 in size in the latter), and in having a different shape of spore (symmetrical crescent-shaped vs. conspicuously asymmetri- cal crescent-shaped body shape). Moreover, the present species is from a different host and different water type (Azuma emmnius Jordan and Snyder, 1902 from sea water vs. Etroplus maculates from brackish water) (Table 2). For these reasons the present myxosporean can be considered to be a new species and is here named Ceratomyxa simplex sp. n. on account of its simple body shape.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	diagnosis	Diagnosis: Irregular disporous trophozoites with several filiated pseudopods and granulated cytoplasm; mature spore symmetric arciform with conical shell-valves, ends of valves rounded with a smooth surface, evident sutural line from a sutural view, 14.5 ± 1.8 (13.0 – 16.5) in thickness, 6.6 ± 0.6 (6.0 – 7.0) in length, posterior angle deeply concave (88 – 122 °); two smaller spherical polar capsules positioned in a plane perpendicular to the sutural line, 2.1 ± 0.1 (2.0 – 2.5) µm in diameter; fine sporoplasm with one binuclear located in the spore cavity; coelozoic.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	materials_examined	Type host and site of infection: Gall bladder and bile of Triacanthus brevirostris Temminck and Schlegel, 1846. Type locality: Coastal waters of the Yellow Sea off Qingdao, China (36 ° 08 ′ N, 120 ° 43 ′ E). Salinity about 32 ‰, water temperature about 14 ° C. Prevalence: Only one fish was obtained and infect- ed (100 %). Date of sampling: June 11, 1998.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	biology_ecology	Host symptom: Unknown.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	materials_examined	Type material: The holotype, on an air-dried slide stained with Giemsa (Coll. No. qd- 19980611 a), and a paratype slide stained with Giemsa (Coll. No. qd- 19980611 b) were deposited at the Collection Center of type-specimens, Chongqing KLAB, Chongqing Normal University, China.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	etymology	Etymology: The species name recalls the host from which this species was originally isolated.	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
039687B70E09907EFCA76562462EFCBC.taxon	description	Description: Early stage plasmodia were irregular in general form, and locomoted typically with an amoe- ba-like movement. When these plasmodia with granulated cytoplasm moved they temporarily extended several long filament pseudopods at the anterior end (Fig. 4 O, Q), which were (53.0 × 23.5) in size; later the plasmodia shortened with several pseudopods when spores were developing in it; becoming 26.5 ± 8.7 (17.5 – 35.5) × 15.3 ± 2.7 (13.0 – 19.0) in size. The interior of the trophozoite was occupied by two spores (Fig. 4 M – N, P). Mature spores were arciform with rounded ends which were symmetrical from a sutural view; sutural line was straight, and each theca with a theca nuclear at the end was smooth and tipped more or less in the end. Posterior angle is deeply concave (88 – 122 °). Two spherical polar capsules were equal in size and positioned anteriorly in the spore cavity in a plane perpendicular to the sutural line (Fig. 4 R – T). No transparent mucus surrounded the spore. Measurements of spores are given in Table 2 (n = 20). Comparison and comments: The new species is similar to C. gobioidesi Chakravarty, 1939 and C. etroplusi Rajendran and Janardanan, 1992. It differs from the latter, however, in having a longer spore length (6.0 – 7.0 vs. 4.0 – 5.0 in C. gobioidesi), and slightly smaller diameter of polar capsule (2.0 – 2.3 vs. 2.5 – 3.0 in C. gobioidesi); different forms of trophozoites (irregular with filament pseudopod vs. round or dish-form in C. gobioidesi) and in size (17.5 – 53.0 × 13.0 – 23.5 in the former vs. 500.0 – 600.0 in diameter in C. gobioidesi). Whereas the present organism differs from C. etroplusi in that: 1) the polar capsules differ from each other in shape (spherical in the former vs. furiform in the latter); 2) length of spore larger in the former than in the latter (6.0 – 7.0 vs. 4.5 – 6.0); 3) different shape of spore (symmetric arch vs. asymmetric crescent).	en	Zhao, Yuanjun, Al-Farraj, Saleh A., Al-Rasheid, Khaled A. S., Song, Weibo (2015): Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China. Acta Protozoologica 54 (4): 305-323, DOI: 10.4467/16890027AP.15.026.3540, URL: https://www.mendeley.com/catalogue/a89f0076-0ef5-3aa1-a759-b22a08ede667/
