ACADEMIA JOURNAL OF BIOLOGY 2020, 42(2): 1–27 DOI: 10.15625/2615-9023/v42n2.14819

AN UPDATED LIST OF Monogenoidea FROM MARINE OF VIETNAM

Nguyen Manh Hung*, Nguyen Van Ha, Ha Duy Ngo Institute of Ecology and Biological Resources, VAST, Vietnam Received 11 February 2020, accepted 16 April 2020

ABSTRACT In this paper, we updated the list of monogenean from marine fishes of Vietnam. Taxonomic position of monogenean species were arranged according to the current classification system. A total of 220 monogenean species from 152 marine species were listed. Distribution, hosts and references of each species were given. In addition, amendations of taxonomic status of taxa were also updated. Keywords: Monogenoidea, marine fishes, East Sea, Gulf of Tonkin, Vietnam.

Citation: Nguyen Manh Hung, Nguyen Van Ha, Ha Duy Ngo, 2020. An updated list of Monogenoidea from marine fishes of Vietnam. Academia Journal of Biology, 42(2): 1–27. https://doi.org/10.15625/2615-9023/v42n2.14819. *Corresponding author email: [email protected]

©2020 Vietnam Academy of Science and Technology (VAST)

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INTRODUCTION subfamilies, genera and species, were arranged The study of monogeneans from marine in alphabetical . fishes in Vietnam began in the 1950s when RESULTS few intensive surveys were undertaken by the A total of 220 monogenetic species were cooperation between Vietnam and Soviet found from 152 marine fish species. These Union parasitologists (Bychowsky & monogeneans are belonging to 108 genera, 24 Nagibina, 1954, 1959). The results of these families, 5 orders, and 2 subclasses. The list studies were published by the Soviet of monogeneans below contains information helminthologists in Russian between about its taxonomical position, host species 1961−1989 in a series of more than 30 papers. and distribution, and reference sources. In addition, a large number of new genera and species were descripted and constitute much CLASS MONOGENOIDEA of the basis of our knowledge of monegenea BYCHOWSKY, 1937 fauna of marine fish in Vietnam and Southeast SUBCLASS POLYONCHOINEA . In 2006, Arthur & Bui listed 55 BYCHOWSKY, 1937 monogenetic species from marine fishes. Order CAPSALIDEA Lebedev, 1988 However, the list did not count many species Family Capsalidae Baird, 1853 which are present in some documents, such as Bychowsky & Nagibina (1954, 1959, 1967, Allobenedenia Yamaguti, 1963 1968, 1969a, 1969b, 1971, 1974, 1975a, 1. A. epinepheli (Bychowsky & Nagibina, 1975b, 1976, 1977), Bychowsky et al. (1976), 1967) Yang, Kritsky & Sun, 2004 Gusseve (1967, 1973, 1985), Timofeeva Syn. Megalocotyloides epinepheli (1989), Egorova & Korotaeve (1990), Bychowsky & Nagibina, 1967 Egorova (2000). Moreover, many publiacations after 2006, e.g. Vo et al. (2010), Bychowsky & Nagibina, 1967: 523; Vo et Nguyen (2012), Dang et al. (2010, 2013), al., 2010: 39 Dmitrieva et al. (2018), Kritsky et al. (2016) Host: Malabar and Nguyen et al. (2016), added 35 species for malabaricus monogenetic fauna in Vietnam. Distribution: Gulf of Tonkin This paper updated all monogenean 2. A. yamagutii (Egorova, 1994) Yang, species from marine fishes of Vietnam and Kritsky & Sun, 2004 arranged them to the current classification Syn. Megalocotyloides yamagutiii system. Egorova, 1994 MATERIALS AND METHODS Vo et al., 2010: 39; Nguyen, 2012: 34 A total of 83 references relating to Host: Warsaw grouper monogeneans from marine fishes of Vietnam nigritus (syn. Epinephelus nigritus)* were retrieved for this study. The taxa of monogeneans in the results part below were Distributions: Nha Trang bay; Ha Long arranged following the classification system bay which was proposed by Bychowsky (1937) and Genus Benedenia Diesing, 1858 revised by Boeger & Kritsky (1993). The 3. B. epinepheli (Yamaguti, 1937) scientific name of monogeneans was checked Meserve, 1938 and corrected according to the database of the World register of marine species (WoRMS, Vo et al., 2010: 38 2020). Similarly, the scientific name of marine Hosts: Duskytail grouper Epinephelus fish hosts was updated following the database bleekeri, longtooth grouper E. bruneus; of the FishBase (https://www.fishbase.in/ E. malabaricus, sixbar search.php). In the list, the taxon levels, i.e. grouper E. sexfasciatus, E.

2 An updated list of Monogenoidea tauvina, warsaw grouper Hyporthodus 9. N. melleni (MacCallum, 1927) nigritus* Yamaguti, 1963 Distribution: Gulf of Tonkin Vo et al., 2010: 41 Genus Capsala Bosc, 1811 (Syn. Hosts: Duskytail grouper Epinephelus Caballerocotyla Price, 1960) bleekeri, malabar grouper E. malabaricus, 4. C. affinis (Mamaev, 1968) warsaw grouper * Syns. Caballerocotyla manteriaffinis Distribution: Nha Trang bay Mamaev, 1968; Capsala manteriaffinis Genus Sessilorbis Mamaev, 1970 Chisholm & Whittington, 2007 10. S. limopharynx Mamaev, 1970 Mamaev, 1968: 9 Mamaev, 1970: 133 Hosts: Kawakawa Euthynnus affinis; Host: Orbicular batfish Platax orbicularis Atlantic bluefin Thunnus thynnus Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Sprostoniella Bychowsky & 5. C. notosinense (Mamaev, 1968) Nagibina, 1967 Chisholm & Whittington, 2007 11. S. multitestis Bychowsky & Nagibina, Syn. Caballerocotyla notosinense 1967 Mamaev, 1968 Bychowsky & Naginina, 1967: 521 Mamaev, 1968: 10 Host: Orbicular batfish P. orbicularis Host: Kawakawa E. affinis Distributions: Gulf of Tonkin, South Distribution: Gulf of Tonkin Cental 6. C. paucispinosa (Mamaev, 1968) Genus Trilobiodiscus Bychowsky & Chisholm & Whittington, 2007 Nagibina, 1967 Syn. Caballerocotyla paucispinosa 12. T. lutiani Bychowsky & Nagibina, Mamaev, 1968 1967 Mamaev, 1968: 12 Bychowsky & Naginina, 1967: 525 Hosts: Kawakawa E. affinis, Atlantic Host: Mangrove red snapper bluefin tuna T. thynnus argentimaculatus Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Encotyllabe Diesing, 1850 Genus Trochopus Diesing, 1850 7. E. spari Yamaguti, 1934 13. T. antigoniae Egorova & Korotaeva, Mamaev, 1970: 139 1990 Egorova & Korotaeva, 1990: 443 Host: Grey large- bream Gymnocranius griseus Host: Indo-Pacific boarfish Antigonia rubescens Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin, South Genus Megalocotyle Folda, 1928 Cental coast 8. M. lutiani Lebedev, 1970 Family Dionchidae Johnston & Tiegs, Lebedev, 1970: 193 1922 Host: Bigeye snapper Lutjanus lutjanus Genus Dionchus Goto, 1899 Distribution: Gulf of Tonkin 14. D. bychowskyi Timofeeva, 1989 Genus Neobenedenia Yamaguti, 1963 Timofeeva, 1989: 59

3 Nguyen Manh Hung et al.

Host: Cobia Rachycentron canadum Family Dactylogyridae Bychowsky, Distribution: Gulf of Tonkin 1933 15. D. major Egorova, 2000 Genus Ancyrocephaloides Yamaguti, 1938 Timofeeva, 2000: 257 22. A. chauhani Bychowsky & Nagibina, Host: Cobia R. canadum 1975 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1975a: 70 16. D. minor Timofeeva, 1989 Host: Short-nosed tripodfish Triacanthus Timofeeva, 1989: 62 brevirostris Host: Live sharksucker Echeneis Distribution: Gulf of Tonkin naucrates Genus Ancyrocephalus Creplin, 1839 Distribution: Gulf of Tonkin 23. A. macrogaster Yamaguti, 1953 17. D. nagibinae Timofeeva, 1989 Mamaev, 1970: 131 Timofeeva, 1989: 64 Host: Whipfin silver-biddy Gerres Host: Cobia R. canadum filamentosus Distributions: Gulf of Tonkin, South Distribution: Gulf of Tonkin Cental coast 24. A. parspinicirrus Mamaev, 1970 18. D. orientalis Timofeeva, 1989 Mamaev, 1970: 129 Timofeeva, 1989: 57 Host: Spotted sicklefish Drepane punctate Host: Live sharksucker E. naucrates Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 25. A. unicirrus Tripathi, 1959 19. D. sinensis Timofeeva, 1989 Mamaev, 1970: 133 Timofeeva, 1989: 65 Host: Silver grunt Pomadasys hasta Host: Live sharksucker E. naucrates Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Atherinicus Bychowsky & Order DACTYLOGYRIDEA Bychowsky, Nagibina, 1969 1937 26. A. cornutus Bychowsky & Nagibina, Family Calceostomatidae Parona & 1969 Perugia, 1890 Bychowsky & Nagibina, 1969b: 523 Genus Bychowskya Nagibina, 1968 Host: 20. B. drepanae Nagibina, 1968 Atherina forskalii Nagibina, 1968: 289 Distribution: Gulf of Tonkin Host: Spotted sicklefish Drepane punctate Genus Bravohollisia Bychowsky & Nagibina, 1970 Distribution: Gulf of Tonkin 27. B. magna Bychowsky & Nagibina, Genus Dicrumenia Mamaev, 1969 1970 21. D. bychowskyi Mamaev, 1969 Bychowsky & Nagibina, 1970a: 22 Mamaev, 1969: 170 Host: Silver grunt Pomadasys hasta Host: Saddle grunt Pomadasys maculatus Distributions: Gulf of Tonkin, South Distribution: Gulf of Tonkin Cental coast

4 An updated list of Monogenoidea

28. B. pomadasis Bychowsky & Nagibina, Distributions: Gulf of Tonkin, South 1970 Cental coast Bychowsky & Nagibina, 1970a: 21 Genus Dactylogyrus Diesing, 1850 Hosts: Silver grunt P. hasta; saddle grunt 34. D. gotoi Gussev, 1965 P. maculatus Gussev, 1967: 251 Distribution: Gulf of Tonkin, South Cental Host: Japanese seabass Lateolabrax coast japonicus 29. B. tecta Bychowsky & Nagibina, 1970 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1970a: 20 35. D. inversus Goto & Kikuchi, 1917 Host: Saddle grunt P. maculatus Gussev, 1967: 251 Distribution: Gulf of Tonkin, South Cental Host: Japanese seabass L. japonicus coast Distribution: Gulf of Tonkin Genus Caballeria Bychowsky & 36. D. kikuchii Gussev, 1965 Nagibina, 1970 Gussev, 1967: 252 30. C. pedunculata Bychowsky & Nagibina, 1970 Host: Japanese seabass L. japonicus Bychowsky & Nagibina, 1970a: 23 Distribution: Gulf of Tonkin Host: Silver grunt P. hasta Genus Diversohamulus Bychowsky & Nagibina, 1969 Distributions: Gulf of Tonkin, South Cental coast 37. D. tricuspidatus Bychowsky & Nagibina, 1969 31. C. robusta Bychowsky & Nagibina, 1970 Bychowsky & Nagibina, 1969b: 525 Bychowsky & Nagibina, 1970a: 24 Host: Sumatran silverside Atherina bleeker Host: Saddle grunt P. maculatus Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin, South Cental coast Genus Euryhaliotrema Kritsky & Boeger, 2002 Genus Chauhanellus Bychowsky & 38. E. johni (Tripathi, 1959) Kritsky & Nagibina, 1969 Boeger, 2002 32. C. flexiosus Bychowsky & Nagibina, Kritsky & Boeger, 2002: 30; Nguyen, 1968 2012: 28 Bychowsky & Nagibina, 1969a: 365 Hosts: Blacktail snapper L. fulvus, bigeye Host: Smooth-headed catfish Arius snapper L. lutjanus, russell's snapper L. leiotetocephalus russelli; blackhead seabream Acanthopagrus Distributions: Gulf of Tonkin, South schlegelii Cental coast Distribution: Ha Long bay 33. C. oculatus Bychowsky & Nagibina, Genus Haliotrema Johnston & Tiegs, 1968 1922 Bychowsky & Nagibina, 1969a: 364 39. H. ampliocuspidis Bychowsky & Host: Smooth-headed catfish A. Nagibina, 1971 leiotetocephalus Bychowsky & Nagibina, 1971: 28

5 Nguyen Manh Hung et al.

Host: Common ponyfish Leiognathus Host: Redcoat Redcoat Sargocentron equulus rubrum (syn. Holocentrus ruber) Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 40. H. australe Bychowsky & Naginina, 47. H. johsntoni Bychowsky & Nagibina, 1970 1970 Bychowsky & Naginina, 1970b: 1791 Bychowsky & Nagibina, 1970b: 1798 Host: Indian goatfish Parupeneus indicus Host: Freckled goatfish Upeneus tragula Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 41. H. bilobatum (Yamaguti, 1953) 48. H. magnihamus Bychowsky & Bychowsky & Nagibina, 1970 Nagibina, 1970 Bychowsky & Naginina, 1970b: 1794 Bychowsky & Nagibina, 1970b: 1797 Hosts: Warsaw grouper Hyporthodus Host: Spotted sicklefish Drepane punctate nigritus*; spotted sicklefish Drepane punctate Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 49. H. neobilobatus Bychowsky & 42. H. cromileptis Young, 1968 Nagibina, 1970 Vo et al., 2010: 35 Bychowsky & Nagibina, 1970b: 1795 Host: Warsaw grouper H. nigritus* Host: Spotted sicklefish D. punctate Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 43. H. epinepheli Young, 1968 50. H. spinicirrus (Yamaguti, 1953) Vo et al., 2010: 34 Bychowsky & Nagibina, 1970 Hosts: Epinephelus Syn. Ancyrocephalus spinicirrus areolatus, E. awoara, Yamaguti, 1953 duskytail grouper E. bleekeri, Hong Kong Mamaev, 1970: 129; Nguyen, 2012: 31 grouper E. akaara, sixbar grouper E. sexfasciatus; red seabream Pagrus major Hosts: Spotted sicklefish D. punctate; (Syn. Pagrosomus major); goldlined Japanese scad Decapterus maruadsi seabream Rhabdosargus sarba Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin, South Cental 51. H. subtilihamula Bychoswky & coast Nagibina, 1971 44. H. flagellocirrus Bychowsky & Bychoswky & Nagibina, 1971: 32 Nagibina, 1970 Host: Toothpony Gazza minuta Bychowsky & Naginina, 1970b: 1794 Distribution: Gulf of Tonkin Host: sweepers Pempheris molucca 52. H. surculocirrus Bychowsky & Distribution: Gulf of Tonkin Nagibina, 1971 45. H. geminatohamula Bychowsky & Bychoswky & Nagibina, 1971: 34 Naginina, 1971 Host: Striped ponyfish Aurigequula Bychowsky & Nagibina, 1971: 1796 fasciata (syn. Leiognathus fasciatus) Host: Spotnape ponyfish N. nuchalis Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 53. H. parvihamus Bychowsky & 46. H. holocentri Young, 1968 Nagibina, 1970 Bychowsky & Nagibina, 1970b: 1793 Bychowsky & Naginina, 1970b: 38

6 An updated list of Monogenoidea

Host: Spotted sicklefish D. punctate Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 61. H. patellacirrus (Bychowsky & 54. H. pempherii Bychowsky & Nagibina, Nagibina, 1971) Kritsky, Yang & Sun, 2009 1970 Bychowsky & Nagibina, 1971: 37 Bychowsky & Naginina, 1970b: 36 Hosts: Bigeye snapper L. lutjanus, dory Host: Sweepers Pempheris molucca snapper L. fulviflammus Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 55. H. platycephali Yin & Sproston, 1948 Genus Hamatopeduncularia Yamaguti, 1953 Nguyen, 2012: 30 62. H. arii Yamaguti, 1953 Host: Bartail flathead Platycephalus indicus Bychowsky & Nagibina, 1969a: 357 Distribution: Gulf of Tonkin Host: Smooth-headed catfish Arius leiotetocephalus 56. H. tenucirrus Bychowsky & Nagibina, 1971 Distribution: Gulf of Tonkin Bychowsky & Naginina, 1970b: 37 63. H. elegans Bychowsky & Nagibina, 1968 Host: Common ponyfish L. equulus Bychowsky & Nagibina, 1969a: 362 Distribution: Gulf of Tonkin Host: Smooth-headed catfish A. arius 57. H. tiegsi Bychowsky & Nagibina, 1970 Distribution: Gulf of Tonkin Bychowsky & Naginina, 1970b: 38 64. H. simplex Bychowsky & Nagibina, 1969 Host: Freckled goatfish U. tragula Bychowsky & Nagibina, 1969a: 361 Distribution: Gulf of Tonkin Host: Smooth-headed catfish A. arius Genus Haliotrematoides Kritsky, Yang & Sun, 2009 Distribution: Gulf of Tonkin 58. H. calcaris (Bychowsky & Nagibina, 65. H. thalassini Bychowsky & Nagibina, 1971) Kritsky, Yang & Sun, 2009 1969 Bychowsky & Nagibina, 1971: 34 Bychowsky & Nagibina, 1969a: 361 Host: snapper Lutjanus sp. Host: Smooth-headed catfish A. arius Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 59. H. longitubocirrus (Bychowsky & Genus Hemirhamphiculus Bychowsky & Nagibina, 1971) Kritsky, Yang & Sun, 2009 Nagibina, 1969 Bychowsky & Nagibina, 1971: 36 66. H. armatus Bychowsky & Nagibina, Hosts: Bigeye snapper L. lutjanus, 1969 brownstripe red snapper L. vitta Bychowsky & Nagibina, 1969b: 518 Distribution: Gulf of Tonkin Host: Black-barred halfbeak 60. H. noncalcaris (Bychowsky & Hyporhamphus far (syn. Hemiramphus far) Nagibina, 1971) Kritsky, Yang & Sun, 2009 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1971: 35 67. H. similis Bychowsky & Nagibina, Host: Mangrove red snapper L. 1969 argentimaculatus Bychowsky & Nagibina, 1969b: 519

7 Nguyen Manh Hung et al.

Host: Dussumier's halfbeak Hosts: Sin croaker Johnius dussumieri Hyporhamphus dussumieri (syn. (syn. Sciaena dussumieri), belanger's croaker Hemiramphus dussumieri) J. belengri, yellow drum Nibea albiflora Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin; South Genus Ligophorus Euzet & Suriano, 1977 Cental coast 68. L. fenestrum Soo & Lim, 2012 73. L. argyrosomi (Bychowsky & Nagibina, 1977) Oliver, 1987 Dmitrieva et al., 2018: 72 Syn. Allomurraytrema argyrosomi Hosts: Bluespot seheli Bychowsky & Nagibina, 1977 (syn. seheli), largescale mullet macrolepis, otomebora mullet P. Bychowsky & Nagibina, 1977: 12 melinopterus, mullet Valamugil formosae, Host: Amoy croaker Argyrosomus speigler's mullet V. speigleri amoyensis Distributions: Gulf of Tonkin; South Distributions: Gulf of Tonkin; South Cental coast Cental coast 69. L. hamulosus Pan et Zhang, 1999 Genus Metahaliotrema Yamaguti, 1953 Nguyen, 2012: 26 74. M. kulkarnii Venkatanarasaiah, 1981 Hosts: bluespot mullet Crenimugil seheli; Kritsky et al., 2016: 330 kanda Osteomugil engeli (syn. Valamugil Host: Spotted scat Scatophagus argus engeli) Distributions: Gulf of Tonkin; South Distribution: Gulf of Tonkin Cental coast 70. L. leporinus (Zhang & Ji, 1981) 75. M. mizellei Venkatanarasaiah, 1981 Gussev, 1985 Nguyen, 2012: 33; Kritsky et al., 2016: Gussev, 1985: 128; Nguyen, 2012: 28 326 Hosts: Bluespot mullet Crenimugil seheli, Host: Spotted scat S. argus squaretail mullet Ellochelon vaigiensis, Distributions: Gulf of Tonkin; vịnh Thái flathead grey mullet cephalus, kanda Lan Osteomugil engeli, largescale mullet Planiliza macrolepis (syn. Liza macrolepis), eastern 76. M. scatophagi Yamaguti, 1953 keelback mullet P. affinis (syn. L. affinis) Kritsky et al., 2016: 324 Distributions: Gulf of Tonkin; South Host: Spotted scat S. argus Cental coast Distributions: Gulf of Tonkin; vịnh Thái 71. L. macrocolpos Euzet & Suriano, Lan 1977 77. M. similis Kritsky, Nguyen, Ha & Te, 1998: 5; Arthur & Bui, 2006: 46 Heckman, 2016 Host: Flathead grey mullet Mugil cephalus Kritsky et al., 2016: 332 Distribution: Gulf of Tonkin Host: Spotted scat S. argus Genus Lobotrema Tripathi, 1959 Distribution: Gulf of Tonkin 72. L. sciaenae (Bychowsky & Nagibina, 78. M. cf. yamagutii Mizelle & Price, 1977) Oliver, 1987 1964 Syn. Allomurraytrema sciaennae Kritsky et al., 2016: 333 Bychowsky & Nagibina, 1977 Host: Spotted scat S. argus Bychowsky & Nagibina, 1977: 14 Distribution: Gulf of Tonkin

8 An updated list of Monogenoidea

79. M. ypsilocleithrum Kritsky, Nguyen, Hosts: Whipfin silver-biddy Gerres Ha & Heckman, 2016 filamentosus; saddleback silver-biddy G. Kritsky et al., 2016: 328 limbatus (syn. G. lucidus) Host: Spotted scat S. argus Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin; vịnh Thái 85. P. delicatus Bychowsky & Nagibina, Lan 1974 Genus Paradiplectanotrema Gerasev, Bychowsky & Nagibina, 1974: 478 Gayevskaya & Kovaleva, 1987 Host: Saddleback silver-biddy G. limbatus 80. P. trachuri (Kovaljova, 1970) Distribution: Gulf of Tonkin Gerasev, Gayevskaya & Kovaleva, 1987 86. P. gussevi Bychowsky & Nagibina, Nguyen, 2012: 34 1974 Hosts: Japanese meagre Argyrosomus Bychowsky & Nagibina, 1974: 473 japonicus, caroun croaker Johnius carouna Host: Jarbua terapon Terapon jarbua Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Parahemirhamphiculus Bychowsky & Nagibina, 1969 87. P. elegantis Bychowsky & Nagibina, 1974 81. P. pinguis Bychowsky & Nagibina, 1969 Bychowsky & Nagibina, 1974: 481 Bychowsky & Nagibina, 1969b: 521 Host: Deep-bodied mojarra G. erythrourus Hosts: Black-barred halfbeak Distribution: Gulf of Tonkin Hyporhamphus far 88. P. fissilis Bychowsky & Nagibina, Distribution: Gulf of Tonkin 1974 Genus Platycephalotrema Kritsky & Bychowsky & Nagibina, 1974: 481 Nitta, 2019 Host: Slender silver-biddy G. oblongus 82. P. macassarense (Yamaguti, 1963) (syn. G. macrosoma) Kritsky & Nitta, 2019 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1971: 38 89. P. marinoides Bychowsky & Host: Bartail flathead Platycephalus Nagibina, 1974 indicus Bychowsky & Nagibina, 1974: 476 Distributions: Gulf of Tonkin Host: Jarbua terapon T. jarbua 83. P. thysanophrydis (Yamaguti, 1937) Distribution: Gulf of Tonkin Kritsky & Nitta, 2019 90. P. marinus Gussev, 1973 Bychowsky & Nagibina, 1971: 39 Gussev, 1973: 17 Hosts: Japanese flathead Inegocia Host: Jarbua terapon T. jarbua japonica (syn. Thysanophrys japonicus) Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Protogyrodactylus Johnston & 91. P. perforatus Bychowsky & Nagibina, Tiegs, 1922 1974 84. P. alienus Bychowsky & Nagibina, Bychowsky & Nagibina, 1974: 476 1974 Host: Jarbua terapon T. jarbua Bychowsky & Nagibina, 1974: 477 Distribution: Gulf of Tonkin

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92. Protogyrodactylus scapulasser 98. C. flexuosus (Yamaguti, 1953) Young, (Mamaev, 1970) Gussev, 1973 1969 Syn. Ancyrocephalus scapulasser Nguyen, 2012: 36 Mamaev, 1970 Host: Japanese bream Mamaev, 1970: 131; Gussev, 1973: 23 japonicus Host: Whipfin silver-biddy G. Distribution: Ha Long bay filamentosus Genus Diplectanum Diesing, 1858 Distribution: Gulf of Tonkin 99. D. spiralis Nagibina, 1976 93. P. solidus Bychowsky & Nagibina, 1974 Nagibina, 1976: 88 Bychowsky & Nagibina, 1974: 475 Host: Dory snapper Lutjanus fulviflamma Host: Jarbua terapon T. jarbua Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 100. D. stetoxus Nagibina, 1976 94. P. sprostonae Bychowsky & Nagibina, 1976: 93 Nagibina, 1974 Host: Waigieu seaperch Psammoperca Bychowsky & Nagibina, 1974: 479 waigiensis Hosts: Deep-bodied mojarr G. Distribution: Gulf of Tonkin erythrourus, slender silver-biddy G. oblongus 101. D. veropolynemi Nagibina, 1976 (syn. G. macrosoma) Nagibina, 1976: 89 Distribution: Gulf of Tonkin Host: Blackspot threadfin Polydactylus 95. P. youngi Bychowsky & Nagibina, sextarius (syn. Polynemus sextarius) 1974 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1974: 480 Host: Slender silver-biddy G. oblongus Genus Laticola Yang, Kritsky, Sun, Zhang, Shi & Agrawal, 2006 Distribution: Gulf of Tonkin 102. L. paralatesi (Nagabina, 1976) Yang, Genus Triacanthinella Bychowsky & Kritsky, Sun, Zhang, Shi & Agrawal, 2006 Nagibina, 1968 Syn. Diplectanum paralatesi Nagabina, 96. T. principalis Bychowsky & Nagibina, 1976 1968 Nagibina, 1976: 91 Bychowsky & Nagibina, 1968: 154 Hosts: Lates calcarifer; Host: Short-nosed tripodfish Triacanthus biaculeatus blackspot threadfin Polydactylus sextarius Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 97. T. tripathii Bychowsky & Nagibina, Genus Murraytrema Price, 1937 1968 103. M. pricei Bychowsky & Nagibina, Bychowsky & Nagibina, 1968: 157 1977 Host: Long-spined tripodfish Nguyen, 2012: 39 Pseudotriacanthus strigilifer Host: Yellow drum Nibea albiflora Distribution: Gulf of Tonkin Distribution: Ha Long bay Family Diplectanidae Monticelli, 1903 Genus Murraytrematoides Yamaguti, Genus Calydiscoides Young, 1969 1958

10 An updated list of Monogenoidea

104. M. bychowskii (Nagibina, 1976) Hosts: Duskytail grouper E. bleekeri, Oliver, 1987 malabar grouper E. malabaricus, Greasy Nagibina, 1976: 94 grouper E. tauvina, warsaw grouper Hyporthodus nigritus* Host: Striped threadfin Polydactylus plebeius (syn. Polynemus plebeius) Vo et al., 2010: 26 Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin, Nha Trang bay Genus Paradiplectanum Domingues & 111. P. cupatus (Young, 1969) Kritsky & Boeger, 2008 Beverley-Burton, 1986 105. P. blairense (Gupta & Khanna, 1974) Te, 1998: 7; Arthur & Bui, 2006: 48 Domingues & Boeger, 2008 Host: sixbar grouper E. sexfasciatus Syn. Diplectanum blairense Gupta & Khanna, 1974 Distribution: Gulf of Tonkin Nguyen, 2012: 34 112. P. epinepheli (Yamaguti, 1938) Kritsky and Beverley-Burton, 1986 Hosts: Silver sillago Sillago sihama; Japanese sillago S. japonica Te, 1998: 7; Arthur & Bui, 2006: 48; Vo et al., 2010: 27 Distribution: Ha Long bay Hosts: Duskytail grouper E. bleekeri, Genus Pseudodiplectanum Tripathi, 1957 longtooth grouper E. bruneus, malabar 106. P. bychowskyi Nagibina, 1977 grouper E. malabaricus, greasy grouper E. Nagibina, 1977: 86 tauvina, warsaw grouper Hyporthodus nigritus* Host: Fourlined tonguesole Cynoglossus bilineatus Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 113. P. grouperi (Bu, Leong, Wong, Woo & Foo, 1999) Wu, Li, Zhu & Xie, 2005 107. P. caballeroi Nagibina, 1977 Syn. Diplectanum grouperi Bu, Leong, Nagibina, 1977: 88 Wong, Woo & Foo, 1999 Host: Tonguefish Symphurus orientalis Vo et al., 2010: 24 Distribution: Gulf of Tonkin Hosts: Duskytail grouper E. bleekeri, 108. P. cynoglossum Tripathi, 1955 longtooth grouper E. bruneus, malabar Nagibina, 1977: 87 grouper E. malabaricus, greasy grouper E. tauvina, warsaw grouper H. nigritus* Host: Fourlined tonguesole C. bilineatus Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 114. P. hargisi (Oliver & Paperna, 1984) Genus Pseudorhabdosynochus Yamaguti, Santos, Buchmann & Gibson, 2000 1958 Syn. Diplectanum hargisi Oliver and 109. P. brunei Dang, Bristow, Schander & Paperna, 1984 Berland, 2013** Te, 1998: 8; Arthur & Bui, 2006: 48 Dang et al., 2013: 52 Hosts: Longtooth grouper E. bruneus, Host: Longtooth grouper Epinephelus sixbar grouper E. sexfasciatus, greasy grouper bruneus E. tauvina Distribution: Nha Trang bay Distribution: Gulf of Tonkin 110. P. coioidesis Bu, Leong, Wong, Woo 115. P. lantauensis Beverley-Burton and & Foo, 1999 Suriano, 1981

11 Nguyen Manh Hung et al.

Vo et al., 2010: 28 Hosts: Duskytail grouper E. bleekeri, Hosts: Duskytail grouper E. bleekeri, orange-spotted grouper E. coioides malabar grouper E. malabaricus, warsaw Distribution: Nha Trang bay grouper Hyporthodus nigritus* Genus Telegamatrix Ramalingum, 1955 Distributions: Gulf of Tonkin, Nha Trang 122. T. elegans Bychowsky & Nagibina, bay 1976 116. P. nhatrangensis Dang, Bristow, Schander & Berland, 2013** Bychowsky & Nagibina, 1976: 9 Dang et al., 2013: 46 Host: Pugnose ponyfish Secutor insidiator (syn. Leiognathus insidiator) Hosts: Duskytail grouper E. bleekeri, Orange-spotted grouper E. coioides Distribution: Gulf of Tonkin Distribution: Nha Trang bay 123. T. grandis Bychowsky & Nagibina, 1976 117. P. serrani (Yamaguti, 1953) Kritsky & Beverley-Burton, 1986 Bychowsky & Nagibina, 1976: 10 Vo et al., 2010: 32 Host: Pugnose ponyfish S. insidiator Hosts: duskytail grouper E. bleekeri, Distribution: Gulf of Tonkin malabar grouper E. malabaricus, greasy 124. T. ramalingami Bychowsky & grouper E. tauvina, warsaw grouper Nagibina, 1976 Hyporthodus nigritus* Bychowsky & Nagibina, 1976: 12 Distribution: Nha Trang bay Host: Pugnose ponyfish S. insidiator 118. P. summanae (Young, 1969) Kritsky & Beverley-Burton, 1986 Distribution: Gulf of Tonkin Vo et al., 2010: 31 Order GYRODACTYLIDEA Bychowsky, 1937 Hosts: duskytail grouper E. bleekeri, warsaw grouper Hyporthodus nigritus* Family Tetraonchoididae Bychowsky, 1951 Distribution: Nha Trang bay Genus Paratetraonchoides Bychowsky, 119. P. summanoides Yang, Gibson & Gussev & Nagibina, 1965 Zeng, 2005 Vo et al., 2010: 30 125. P. inermis Bychowsky, Gussev & Nagibina, 1965 Hosts: Duskytail grouper E. bleekeri, malabar grouper E. malabaricus, warsaw Bychowsky et al., 1965: 144 grouper Hyporthodus nigritus* Host: Longnosed stargazer Ichthyscopus Distribution: Nha Trang bay lebeck 120. P. vagamipullum (Young, 1969) Distribution: Gulf of Tonkin Kritsky & Beverley-Burton, 1986 Genus Pavlovskioides Bychowsky, Vo et al., 2010: 31 Gussev & Nagibina, 1965 Host: Longspine grouper E. longispinis 126. P. ichthyoscopi Bychowsky, Gussev (syn. E. fario) & Nagibina, 1965 Distribution: Nha Trang bay Bychowsky et al., 1965: 146 121. P. vietnamensis Dang, Bristow, Host: Longnosed stargazer Ichthyscopus Schander & Berland, 2013** lebeck Dang et al., 2013: 49 Distribution: Gulf of Tonkin

12 An updated list of Monogenoidea

127. P. litoralis Bykhovsky, Gussev and Timofeeva, 1981: 400 Nagibina, 1965 Host: Giant guitarfish Rhynchobatus Bychowsky et al., 1965: 148 djiddensis (syn. Rhinobatus djiddensis) Host: Snakefish Trachinocephalus myops Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 134. N. nagibinae (Timofeeva, 1981) Genus Pseudotetraonchoides Bychowsky, Chisholm, 1994 Gussev & Nagibina, 1965 Timofeeva, 1981: 401 128. P. bleekeriae Bychowsky, Gussev & Host: Giant guitarfish R. djiddensis Nagibina, 1965 Distribution: Gulf of Tonkin Bychowsky et al., 1965: 152 135. N. rhinobatis (Pillai & Pillai, 1976) Host: sand lance Bleekeria viridianguilla Chisholm & Whittington, 1997 Distribution: Gulf of Tonkin Timofeeva, 1981: 402 Order MONOCOTYLIDEA Lebedev, 1988 Host: Giant guitarfish R. djiddensis Family Monocotylidae Taschenberg, Distribution: Gulf of Tonkin 1879 Genus Dasybatotrema Price, 1936 Genus Monocotyle Taschenberg, 1878 136. D. spinosum Timofeeva, 1983 129. M. ancylostomae Timofeeva, 1984 Timofeeva, 1983: 42 Timofeeva, 1984: 299 Host: Round ribbontail ray Taeniurops Host: Bowmouth guitarfish Rhina meyeni (Sny. Taeniura melanospilos) ancylostoma Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Timofeevia Chisholm, Wheeler & 130. M. undosocirrus Timofeeva, 1984 Beverley-Burton, 1995 Timofeeva, 1984: 297 137. T. rajae (Timofeeva, 1983) Host: Twin-spot butterfly ray Gymnura Chisholm, Wheeler & Beverley-Burton, 1995 bimaculata Syn. Dasybatotrema rajae Timofeeva, Distribution: Gulf of Tonkin 1983 Genus Heterocotyle Scott, 1904 Timofeeva, 1983: 44 131. H. armata Timofeeva, 1983 Host: ray Dasyatis sp. Timofeeva, 1983: 39 Distribution: Gulf of Tonkin Host: Honeycomb stingray Dasyatis SUBCLASS OLIGONCHOINEA uarnak BYCHOWSKY, 1937 Distribution: Gulf of Tonkin Order Bychowsky, 132. H. confusa Timofeeva, 1983 1937 Timofeeva, 1983: 37 Family Allodiscocotylidae Tripathi, Host: Honeycomb stingray D. uarnak 1959 Distribution: Gulf of Tonkin Genus Allodiscocotyla Yamaguti, 1953 Genus Neoheterocotyle Hargis, 1955 138. A. chorinemi Yamaguti, 1953 133. N. bychowskyi (Timofeeva, 1981) Lebedev, 1970a: 193; Lebedev et al., Chisholm, 1994 1970: 193; Parukhin, 1976: 98

13 Nguyen Manh Hung et al.

Hosts: Doublespotted queenfish Host: Pharao flyingfish Cypselurus naresii lysan; scad Caranx sp.; scad Distributions: Gulf of Tonkin; South Decapterus sp. Cental coast Distribution: Gulf of Tonkin Family Bychowskicotylidae Lebedev, 139. A. diacanthi Unnithan, 1962 1969 Lebedev et al., 1970a: 193 Genus Bychowskicotyle Lebedev, 1969 Host: Scad Decapterus sp. 145. B. plectorhynchi Lebedev, 1969 Distribution: Gulf of Tonkin Lebedev, 1986: 99 Genus Camopia Lebedev, 1970 Host: Crescent sweetlips Plectorhynchus cinctus 140. C. rachycentri Lebedev, 1970 Distribution: Gulf of Tonkin Lebedev, 1970b: 666, 1986: 151 Genus Tonkinopsis Lebedev, 1972 Host: Cobia Rachycentron canadum 146. T. transfretanus Lebedev, 1972 Distribution: Gulf of Tonkin Lebedev, 1972a: 151 Genus Metacamopia (Unnithan, 1962) Lebedev, 1972 Host: Crescent sweetlips P. cinctus 141. M. indica (Unnithan, 1962) Lebedev, Distribution: Gulf of Tonkin 1972 Family Diclidophoridae Cerfontaine, Host: Doublespotted queenfish 1895 Scomberoides lysan Genus Choricotyle van Beneden & Hesse, Lebedev, 1972b: 128; Lebedev, 1986: 153 1863 Distribution: Gulf of Tonkin 147. C. pellonae Kritsky & Bilgee, 1973 142. M. chormemi (Yamaguti, 1953) Mamaev, 1975: 108 Lebedev, 1984 Host: Elongate ilisha Ilisha elongata Lebedev et al., 1970: 194; Lebedev, 1986: Distribution: Gulf of Tonkin 153 148. C. polynemi Mamaev, 1972 Hosts: Doublespotted queenfish S. lysan; Mamaev, 1972a: 158 bigeye scad Selar crumenophthalmus Hosts: Blackspot threadfin Polynemus Distribution: Gulf of Tonkin sextarius; fourfinger threadfin Eleutheronema Family Axinidae Monticelli, 1903 tetradactylum Genus Loxuroides Price, 1962 Distribution: Gulf of Tonkin 143. L. pricei Nguyen, Nguyen, Bui & Ha, Genus Helciferus Mamaev, 1972 2016 149. H. tenuis Mamaev, 1972 Nguyen et al., 2016: 391 Mamaev, 1973: 1236 Host: Pharao flyingfish Cypselurus naresii Host: Osbeck's grenadier anchovy Coilia Distributions: Gulf of Tonkin; South mystus Cental coast Distribution: Gulf of Tonkin Genus Unnithanaxine Price, 1962 Genus Heterobothrium Cerfontaine, 1895 144. U. naresii Nguyen, Nguyen, Bui & 150. H. tonkinensis Bychowsky & Ha, 2016 Nagibina, 1976 Nguyen et al., 2016: 388 Bychowsky et al., 1976: 31

14 An updated list of Monogenoidea

Hosts: Silver-cheeked toadfish Mamaev, 1972b: 167 Lagocephalus sceleratus; Takifugu sp. Host: Sin croaker Johnius dussumieri Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Osphyobothrus Yamaguti, 1958 Family Price, 1943 151. O. bychowskyi Khoche & Chauhan, Genus Allopseudaxine Yamaguti, 1943 1969 158. A. macrova (Unnithan, 1957) Mamaev & Parukhin, 1970: 305; Yamaguti, 1963 Parukhin, 1976: 112 Lebedev, 1968a: 49 Host: Greater lizardfish Saurida tumbil Host: scad Caranx sp. Distributions: Gulf of Tonkin; South Cental coast Distribution: Gulf of Tonkin 152. O. multivitellatus Mamaev & Genus Churavera Unnithan, 1968 Parukhin, 1970 159. C. triangula (Mamaev, 1967) Mamaev & Parukhin, 1970: 308 Lebedev, 1986 Host: Greater lizardfish S. tumbil Lebedev, 1986: 65 Distribution: vịnh Thái Lan Host: Frigate tuna Auxis thazard Genus Papillochoricotyle Mamaev, 1975 Distribution: Gulf of Tonkin 153. P. ilishae Mamaev, 1975 Genus Gastrocotyle Beneden & Hesse, 1863 Mamaev, 1975: 110 160. G. indica Subhapradha, 1951 Hosts: Elongate ilisha Ilisha elongata, Ilisha sp. Lebedev, 1986: 52 Distribution: Gulf of Tonkin Host: Shrimp scad Alepes djedaba (syn. Caranx kalla) Genus Upenicola Unnithan, 1966 Distribution: Gulf of Tonkin 154. U. capheni Mamaev, 1972 161. G. kalla Unnithan, 1968 Mamaev, 1972b: 166 Lebedev, 1986: 52 Hosts: Sulphur goatfish Upeneus sulphureus; goatfish Parupeneus sp. Hosts: Shrimp scadA. djedaba, Blackfin scad A. melanoptera (syn. Caranx malam) Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 155. U. digitata Mamaev, 1972 162. G. trachuri Van Beneden & Hesse, Mamaev, 1972b: 164 1863 Hosts: Sulphur goatfish U. sulphureus; Lebedev, 1968a: 49 goatfish Parupeneus sp. Hosts: Bigeye scad Selar Distribution: Gulf of Tonkin crumenophthalmus; scad Decapterus sp. 156. U. upeneoides Unnithan, 1966 Distribution: Gulf of Tonkin Mamaev, 1972b: 165 Genus Parona & Perugia, Host: Sulphur goatfish U. sulphureus; 1890 goatfish Parupeneus sp. 163. P. bivaginalis Dillon & Hargis, 1965 Distribution: Gulf of Tonkin Lebedev, 1986: 54 Genus Urocotyle Unnithan, 1966 Host: Yellowstripe scad Selaroides 157. U. anellus Mamaev, 1972 leptolepis

15 Nguyen Manh Hung et al.

Distribution: Gulf of Tonkin Hosts: Kawakawa Euthynnus affinis; 164. P. kurra Unnithan, 1968 frigate tuna Auxis thazard; Atlantic bluefin tuna Thunnus thynnus Lebedev 1986: 54 Distribution: Gulf of Tonkin Hosts: Torpedo scad Megalaspis cordyla; yellowtail scad Atule mate Family Gotocotylidae Yamaguti, 1963 Genus Cathucotyle Lebedev, 1968 Distribution: Gulf of Tonkin 171. C. cathuaui Lebedev, 1968 165. P. trachuri Parona & Perugia, 1889 Lebedev, 1968a: 46, 1970a, 1986: 143 Lebedev, 1986: 53 Hosts: Narrow-barred Spanish mackerel Hosts: Malabar trevally Caranoides Scomberomorus commerson, Indo-Pacific malabaricus (syn. Caranx malabaricus); scad king mackerel S. guttatus Caranx sp.; scad Decapterus sp. Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Gotocotyla Ishii, 1936 Genus Pseudaxinoides Lebedev, 1968 172. G. acanthura (Parona & Perugia, 166. P. bychowski Lebedev, 1977 1896) Meserve, 1938 Lebedev, 1986: 56 Syn. G. secunda (Tripathi, 1954) Host: Shrimp scad Alepes djedaba Lebedev, 1970a: 201 Distribution: Gulf of Tonkin Host: Narrow-barred Spanish mackerel S. 167. P. caballeroi Lebedev, 1977 commerson Lebedev, 1986: 56 Distribution: Gulf of Tonkin Host: Shrimp scad A. djedaba 173. G. bivaginalis (Ramalingam, 1961) Rohde, 1976 Distribution: Gulf of Tonkin Syn. G. laticauda Lebedev, 1970 168. P. decapteri (Yamaguti, 1968) Lebedev, 1977 Lebedev, 1970a: 202; Lebedev, 1986: 141 Lebedev, 1986: 57 Host: Narrow-barred Spanish mackerel S. commerson Host: Japanese scad Decapterus maruadsi Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Family Heteraxinidae Unnithan, 1957 169. P. vietnamensis Lebedev, Parukhin & Roitman, 1970 Genus Bicotyle Tripathi, 1956 Lebedev, 1986: 56; Lebedev et al., 1970: 174. B. perpolita Lebedev, 1968 198; Parukhin, 1976: 92 Lebedev, 1968b : 48 Hosts: Bigeye scad Selar Hosts: Silver argenteus; crumenophthalmus; yellowstripe scad black pomfret Parastromateus niger Selaroides leptolepis; greater Distribution: Gulf of Tonkin Seriola dumerili; trevally Caranx sp.; scad Genus Heteraxine Yamaguti, 1938 Decapterus sp. 175. H. heterocerca (Goto, 1894) Distribution: Gulf of Tonkin Yamaguti, 1938 Genus Sibitrema Yamaguti, 1966 Lebedev, 1968a: 82, 1970a: 206 170. S. poonui Yamaguti, 1966 Host: Bigeye scad Selar Mamaev, 1967: 994; Lebedev, 1986: 60 crumenophthalmus

16 An updated list of Monogenoidea

Distributions: Gulf of Tonkin, South Lebedev, 1970a: 197; Mamaev, 1988a: 43 Cental coast Host: Malabar trevally C. malabaricus Genus Kannaphallus Unnithan, 1957 Distribution: Gulf of Tonkin 176. K. virilis Unnithan, 1957 Family Hexostomatidae Price, 1936 Lebedev, et al. 1970a: 198; Mamaev, Genus Hexostoma Rafinesque, 1815 1990: 226 183. H. thynni (Delaroche, 1811) Host: Indian threadfish indica Rafinesque, 1815 Distribution: Gulf of Tonkin Syn. H. auxisi Palombi, 1943 Genus Lethrinaxine Mamaev, 1970 Mamaev, 1968: 18 177. L. parva Mamaev, 1970 Host: Frigate tuna Auxis thazard Mamaev, 1970: 146 Distribution: Gulf of Tonkin Host: Grey large-eye bream Genus Neohexostoma Price, 1961 Gymnocranius griseus Distribution: Gulf of Tonkin 184. N. euthynni (Meserve, 1938) Price, 1961 Genus Monaxine Unnithan, 1957 Mamaev, 1968: 21 178. M. formionis Unnithan, 1957 Hosts: Frigate tuna Auxis thazard; Mamaev, 1970: 143 kawakawa Euthynnus affinis Hosts: Black pomfret Parastromateus Distribution: Gulf of Tonkin niger Family Mazocraeidae Price, 1936 Distribution: Gulf of Tonkin Genus Engraulicola George, 1960 Family Heteromicrocotylidae Unnithan, 1961 185. E. thrissocles (Tripathi, 1959) Lebedev, 1971 Genus Heteromicrocotyla Yamaguti, 1953 Syn. Paramazocraes thrissocles Tripathi, 1959 179. H. carangis Yamaguti, 1953 Mamaev, 1975: 111 Lebedev, 1970a: 197; Mamaev, 1988a: 37 Host: Anchovy Thrissocles sp. Host: Black pomfret Parastromateus niger Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Heteromazocraes Mamaev, 1981 180. H. paruchini Mamaev, 1968 186. H. coiliae Mamaev, 1981 Mamaev, 1988a: 42 Mamaev, 1981: 174 Hosts: Malabar trevally C. malabaricus, Host: Gray's grenadier anchovy Coilia Carangoides sp. grayii Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin 181. H. polyorchis Unnithan, 1961 187. H. dodecacantha Mamaev, 1981 Lebedev, 1970a: 197 Mamaev, 1981: 176 Hosts: Shadow trevally C. dinema; Bigeye Host: Anchovy Thrissocles sp. trevally C. sexfasciatus Distribution: Gulf of Tonkin Distribu tion: Gulf of Tonkin 188. H. vicinus (Mamaev, 1975) Mamaev, 182. H. vaginispina Unnithan, 1961 1981

17 Nguyen Manh Hung et al.

Mamaev, 1975: 112, 1981: 177 Host: Indian mackerel Rastrelliger Hosts: Anchovy Thrissocles sp.; kanagurta hamilton's thryssa T. hamiltonii Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Pseudomazocraes Price, 1961 Genus Leptomazocraes Mamaev, 1975 195. P. longicauda (Mamaev, 1975) 189. L. orientalis (Chauhan, 1950) Mamaev, 1984 Mamaev, 1975 Mamaev, 1975: 113 Mamaev, 1975: 103 Host: Slender rainbow elopsoides Host: Slender Dussumieria elopsoides Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Family Taschenberg, 1879 190. L. trispina (Unnithan, 1964) Mamaev, 1981 Genus Caballeraxine Lebedev, 1972 Mamaev, 1981: 179 196. C. chainanica (Lebedev, Parukhin & Roitman, 1970) Lebedev, 1972 Host: Slender rainbow sardine D. elopsoides Lebedev, et al. 1970: 198; Mamaev & Kurochin, 1976: 18 Distribution: Gulf of Tonkin Host: Malabar trevally Caranx Genus Mazocraeoides Price, 1936 malabaricus 191. M. dussumieri Mamaev, 1975 Distribution: Gulf of Tonkin Mamaev, 1975: 104 Genus Diplostamenides Unnithan, 1971 Host: Slender rainbow sardine D. 197. D. sciaenae (Goto, 1894) Mamaev, elopsoides 1986 Distribution: Gulf of Tonkin Syn. Microcotyle hemiatriospinalis 192. M. prashadi Chauhan, 1950 Lebedev, Parukhin and Roytman, 1970 Mamaev, 1975: 105 Lebedev, 1970a: 196; Lebedev, et al. Hosts: Sardinella Amblygaster sp. 1970: 171; Parukhin, 1976: 122; Mamaev, 1986: 201 Distribution: Gulf of Tonkin Host: Seriola sp. Genus Neomazocraes Price, 1943 Distribution: Gulf of Tonkin 193. N. dorosomatis (Yamaguti, 1938) Genus Intracotyle Mamaev, 1970 Price, 1943 198. I. orientalis Mamaev, 1970 Nguyen, 2012: 40 Mamaev, 1970: 184 Host: Chinese gizzard shad Clupanodon thrissa Host: Saddle grunt Pomadasys maculatus Distribution: Ha Long bay Distribution: Gulf of Tonkin Genus Pseudoanthocotyle Bychowsky & Genus Lutianicola Lebedev, 1970 Nagibina, 1954 199. L. haifonensis Lebedev, 1970 194. P. pavlovskyi Bychowsky & Lebedev, 1970a: 194 Nagibina, 1954 Host: Emperor red snapper Lutjanus Bychowsky & Nagibina, 1954: 32 sebae, russell's snapper L. russellii

18 An updated list of Monogenoidea

Distribution: Gulf of Tonkin Distribution: Gulf of Tonkin Genus Microcotyle Van Beneden & Genus Polynemicola Unnithan, 1971 Hesse, 1863 206. P. ambigua Mamaev, 1977 200. M. arrips Sandars, 1945 Mamaev, 1977: 94 Bychowsky & Nagibina, 1975b: 215 Hosts: Blackspot threadfin Polynemus Hosts: Whitecheek monocle bream sextarius, Eleutheronema sp. Scolopsis vosmeri, lattice monocle bream S. taeniopterus; yellowtail amberjack Seriola Distribution: Gulf of Tonkin lalandi (syn. S. aureovittata) 207. P. sciaenae Mamaev, 1977 Distribution: Gulf of Tonkin Mamaev, 1977: 96 201. M. fistulariae Mamaev, 1989 Host: Sin croaker Johnius dussumieri Mamaev, 1989: 143 Distribution: Gulf of Tonkin Host: Red cornetfish Fistularia petimba Genus Tonkinaxine Lebedev, Parukhin & Distribution: Gulf of Tonkin Roitman, 1970 Genus Monomacracanthus Mamaev, 208. T.homocerca Lebedev, Parukhin and 1976 Roytman, 1970 202. M. cadodai Mamaev, 1976 Lebedev, 1970a: 197; Lebedev et al., Mamaev, 1976: 31 1970a: 175; Parukhin, 1976: 86 Hosts: Large yellow croaker Larimichthys Hosts: Blackbanded trevally Seriolina crocea (syn. Pseudosciaena crocea); sin nigrofasciata; greater amberjack Seriola croaker Johnius dussumieri dumerili, Seriola sp. Distribution: Gulf of Tonkin Distributions: Gulf of Tonkin, South Cental coast Genus Polylabris Euzet & Cauwet, 1967 Family Paramonaxinidae Mamaev, 203. P. gerres (Sandars, 1944) Mamaev & 1990 Parukhin, 1976 Genus Incisaxine Mamaev, 1970 Mamaev & Parukhin, 1976: 250 209. I. dubia Mamaev, 1970 Hosts: Saddleback silver-biddy Gerres lucidus; whipfin silver-biddy G. filamentosus Mamaev, 1970: 149 Distribution: Gulf of Tonkin Host: Whipfin silver-biddy Gerres 204. P. tubicirrus (Paperna & Kohn, filamentosus 1964) Mamaev & Parukhin, 1976 Distribution: Gulf of Tonkin Mamaev & Parukhin, 1976: 247 Family Plectanocotylidae Monticelli, Hosts: Toothpony G. minuta; pugnose 1903 ponyfish L. insidiator Genus Triglicola Mamaev & Parukhin, Distribution: Gulf of Tonkin 1972 Genus Polylabroides Mamaev & 210. T. tonkinensis Mamaev & Parukhin, Parukhin, 1976 1972 205. P. zini Mamaev, 1987 Mamaev & Parukhin, 1972: 66; Parukhin, Mamaev, 1988b: 196 1989: 121 Hosts: Goldsilk seabream A.berda, Host: Gurnard Lepidotrygla sp. Yellowfin seabream A. latus Distribution: Gulf of Tonkin

19 Nguyen Manh Hung et al.

Family Protomicrocotylidae Johnston 217. Q. ventrosa Lebedev & Parukhin, & Tiegs, 1922 1970 Genus Bilaterocotyloides Ramalingam, Lebedev & Parukhin, 1970: 458 1961 Hosts: Cobia Rachycentron canadum; 211. B. carangis Ramalingam, 1961 Japanese scad Decapterus maruadsi Lebedev et al., 1970: 194; Parukhin, 1989: Distributions: Gulf of Tonkin, South 124 Cental coast Host: Torpedo scad Megalaspis cordyla Family Pterinotrematidae Caballero & Bravo-Hollis, 1955 Distribution: Gulf of Tonkin Genus Pterinotrema Caballero, Bravo- 212. B. madrasensis Radha, 1966 Hollis & Grocott, 1954 Lebedev, 1986: 115 218. P. mirabile Bychowsky & Nagibina, Host: Torpedo scad M. cordyla 1959 Distribution: Gulf of Tonkin Bychowsky & Nagibina, 1959: 218 Genus Neomicrocotyle Ramalingam, 1960 Host: Bonefish Albula vulpes 213. N. indica Ramalingam, 1960 Distributions: Gulf of Tonkin, South Cental coast Bychowsky & Nagibina, 1975b: 216 Family Thoracocotylidae Price, 1936 Host: Bigeye trevally Caranx sexfasciatus Genus Pricea Chauhan, 1945 Distribution: Gulf of Tonkin 219. P. multae Chauhan, 1945 Genus Vallisiopsis Subhapradha, 1951 Lebedev, 1970: 201 214. V. contorta Subhapradha, 1951 Hosts: Narrow-barred Spanish mackerel Lebedev, 1986: 118 Scomberomorus commerson, Indo-Pacific Host: False trevally Lactarius lactarius king mackerel S. guttatus Distributions: Gulf of Tonkin, South Distribution: Gulf of Tonkin Cental coast 215. V. sphyraenae Yamaguti, 1968 Genus Pseudothoracocotyla Yamaguti, Lebedev, 1986: 118 1963 Host: Yellowtail Sphyraena 220. P. ovalis (Tripathi, 1956) Yamaguti, flavicauda (syn. S. langsar) 1963 Distribution: Gulf of Tonkin Lebedev, 1970: 204 Genus Youngiopsis Lebedev, 1972 Hosts: Narrow-barred Spanish mackerel Scomberomorus commerson, Indo-Pacific 216. Y. australis (Young, 1968) Lebedev, king mackerel S. guttatus 1972 Distributions: Gulf of Tonkin, South Lebedev, 1972b: 132 Cental coast Host: Obtuse barracuda S. obtusata Notes: “*”: The distribution of the warsaw Distribution: Gulf of Tonkin grouper Hyporthodus nigritus is mainly in the western of Atlantic , so all records of Family Pseudodiclidophoridae warsaw grouper Hyporthodus nigritus in the Yamaguti, 1965 off Vietnam could be misidentified. The Genus Quillonella Lebedev & Parukhin, correct species, for instance, is generally 1970 considered to a tenspine grouper Epinephelus

20 An updated list of Monogenoidea exsul, which is distributed in Indo-Pacific At the level of genus, Allopseudaxine was region; “**”: Not accepted yet by WoRMS moved to Axinidae from Gastrocotylidae (2020). (Hayward & Rohde, 1999a), Tonkinaxine was moved to Microcotylidae from Heteraxinidae DISCUSSION (Mamaev, 1986). Mamaev (1990) transfered In this paper, we updated the list of some genera from Microcotylidae to other fauna from marine fishes of families, e.g. Incisaxine was moved to Vietnam. The list includes 220 species, this Paramonaxinidae, Kannaphallus and number is greater comparing with 135 species Lethrinaxine were moved to Heteraxinidae. in the list of Arthur & Bui (2006). In addition, At the level of species, Arthur & Bui the modification of contemporary classifications of several taxa also was (2006) arranged two species, Vallisia updated. chorinemi and Triglicola tonkinensis, in Anthocotylidae, however, they are belonging At higher taxonomic levels, i.e. subclass, to Allodiscocotylidae (Lebedev, 1984) and there are two classification systems which are Plectanocotylidae (Parukhin 1989), bilateral used at the present (Wheeler & separately. In addition, Lebedev (1984) also Chisholm, 1995), including (1) the system transferred V. chorinemi to Metacamopia. was proposed by Llewellyn (1970) and Bychowsky & Nagibina (1970) moved revised by Beverley-Burton (1984) and (2) the Ancyrocephalus bilobatus and A. spinicirrus system was proosed by Bychowsky (1937) to Haliotrema; similarly, A. scapulasser was and revised by Boeger & Kritsky (1993). The transferred to Protogyrodactylus (Gussev, classification system of Llewellyn (1970) and 1973), and Diplectanum hargisi was moved to Beverley-Burton (1984) is divided the class of Pseudorhabdosynochus (Santos et al., 2000). Monogenea into two subclasses, Moreover, the name of four species, Dawesia Monopisthocotylea and , incise, Microcotyle hemiatriospinalis, based on several morphological characters of Gotocotyla laticaudata và G. secunda were fluke, e.g. the structure, shape and size of changed in succession to Pseudothoracocotyla opisthohaptor and parasitic position on its ovalis, Diplostamenides sciaenae, Gotocotyla hosts. This system is simple and is used by bivaginalis and G. Acanthura (Hayward & WoRMS (2020) for updating data. The system Rohde, 1999b; Mamaev, 1986; Rohde, 1976). of Bychowsky (1937) and Boeger & Kritsky (1993) divides the class of Monogenoidea into Three species, Pseudorhabdosynochus three subclasses, Polyonchoinea, bruneus, P. nhatrangensis and P. Polystomatoinea and Oligonchoinea. This vietnamensis which were found from grouper sytem is more complicated to compare to the by Dang et al. (2013), are unaccepted because system of Llewellyn (1970) and Beverley- the publication is not compliant with Article Burton (1984), but it has more comprehensive 8.5 (2012) of the International Commission on views, and was revised basing on 141 Zoological Nomenclature WoRMS (2020). In character states in 47 homologous series and this paper, however, we listed all three employing phylogenetic systematics (Boeger mentioned species because of theirs exist. & Kritsky, 1993). Therefore we used the In addition, there are 23 monogenean classification system of Bychowsky (1937) species, which were identified at genus level, and Boeger & Kritsky (1993), and updated including: 17 species of Ligophorus (Garasev data of lower taxa by using WoRMS (2020). et al., 2011a, b; Dmitrieva et al., 2013); 1 The bilateral using two classification systems species of Diplectanum (Mamaev, 1970); 1 are not contradiction, because almost species of Gastrocotyle (Lebedev, 1970a); 1 taxonomic levels at family and under family species of Microcotyle (Lebedev et al., 1970); are the same. Monogenean fauna in Vietnam 1 species of Pseudaxine (Parukhin, 1976); 1 is belonging to two subclasses Polyonchoinea species of Benedenia (Te, 1998); 1 species of and Oligonchoinea. Haliotrema (Vo et al., 2010). All of them did

21 Nguyen Manh Hung et al. not count in the list above but the future . lzvestiya Akademiya Nauk studies should clarify the taxonomic position SSSR, Set. Biologiya, 4, 1353−1383. (in of these species. Russian: English translation, 1981, Relating to the host-parasite Gloucester Point, Virginia: Virginia relationships, the great majority of Institute of Marine Science, Translation monogeneans (70,9%, 156/220 species) use Series no. 26). just only one host species, it shows the Bychowsky B. E., Gussev A. V., Nagibina L. specialization of monogeneans to choose F., 1965. Monogenetic trematodes of family theirs host. Other monogenea species were Tetraonchoididae Bychowsky, 1951. Trudy found on two or even seven host species, e.g. Zoologicheskogo Instituta, 53: 140–166. (in Haliotrema epinepheli has been found on the Russian). gills of 7 marine fish species. About fish Bychowsky B. E., Mamaev Yu. L., Nagibina hosts, some species are only infected by only L. F., 1976. Revision of the genus one monogenean species while other species Heterobothrium Cerfontaine, 1895 are infected by many congeneric (Diclidophoridae). Trudy Biologo- monogenean species, e.g, Spotted scat Pochvennogo Instituta, 34 (137): 29–39. Scatophagus argus, or by monogeneans of (in Russian). diferent genera, e.g. Epinephelus Bychowsky B. E., Nagibina L. F., 1954. On a spp., snapper Lutjanus spp. new representative of marine monogenetic In conclusion, the monogenean fauna trematodes from the Pacific Ocean. from marine fish of Vietnam is quite diverse, Zoologicheskii Zhurnal, 33: 30–38. (in with 220 recoded species. However, almost Russian). period studies have only forcused to Bychowsky B. E., Nagibina L. F., 1959. On discorvery the biodiversity of these flukes. new representatives of monogenetic There are currently no studies on genetic, trematodes from The South Sea. biological, ecological characters of Acta Zoologica Sinica, 11, 211–236. (in monogeneans in the off Vietnam. In addition, Chinese). the pathogens, which caused by monogeneans, also need to further study for Bychowsky B. E., Nagibina L. F., 1967. New reducing the damage to . Capsalidae (Monogenoidea) from Pacific fishes. Parazitologiya, 1: 521–528. (in REFERENCES Russian). Arthur J. R., Bui Q. T., 2006. Checklist of the Bychowsky B. E., Nagibina L. F., 1968. parasites of fishes of Vietnam. FAO Triacanthinella, a new genus of marine Technical Paper 369/2, 133 pp. monogenean parasites of hornfishes. Beverley-Burton M., 1984. Monogenea and Parazitologiya, 2: 148–157. (in Russian). Turbellaria. In Margolis L., & Kabata Z. Bychowsky B. E., Nagibina L. F., 1969a. (eds.), Guide to the parasites of fishes of Ancyrocephalinae (Dactylogyridae, Canada, Part 1, p. 5–209. Canadian Spec. Monogenoidea) from fishes of the family Publ. Fish. Aquat. Sci. 74. Ariidae. Parazitologiya, 3: 357–368. Boeger W. A., Kritsky D. C., 1993. (in Russian). Phylogeny and a revised classification of Bychowsky B. E., Nagibina L. F., 1969b. the Monogenoidea Bychowsky, 1937 New genus of monogeneans of the (Platyhelminthes). Syst. Parasitol. 26: subfamily Ancyrocephalinae 1–32. https://doi.org/10.1007/ (Dactylogyridae). Parazitologiya, 3: 518– BF00009644. 527. (in Russian). Bychowsky B. E., 1937. Ontogenesis and Bychowsky B. E., Nagibina L. F., 1970a. phylogenetic interrelationships of parasitic Ancyrocephalinae (Monogenoidea,

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USSR, Institute of Biology and Edafology BiologoPochvennogo Instituta, of Central Asia and Far East. Vladivostok, Vladivostok, 11 (114): 155–162. 108 pp. [In Russian]. [In Russian]. Lebedev B. I., 1986. Monogenoidea, Suborder Mamaev Yu. L., 1972b. The monogeneans of Gastrocotyline. Leningrad: Nauka, 200pp. the genus Upenicola Unnithan, 1966. [In Russian]. Trudy Biologo-Pochvennogo Instituta, Lebedev B. I., Parukhin A. M, 1970. A new Vladivostok, 11 (114): 163–169. monogenoid, Quilonella ventrosa gen. & [In Russian]. sp. n. and their position in the system. Mamaev Yu. L., 1973. A new species and Parazitologiya, 4: 458–465. [In Russian]. genus Helciferus tenuis (Diclidophoridae) Lebedev B. I., Parukhin A. M., Roitman V. from fishes of the family Engraulidae. A., 1970. Monogenetic trematodes, Zoologicheskii Zhurnal, 52: 1235–1238. Oligongchoinea (Monogenoidea), [In Russian]. parasites of horse mackerel fishes of North Mamaev Yu. L., 1975. Monogeneans of Vietnam Gulf. Biologya Morya, Kiev, 20: 167–187. [In Russian]. clupeiform fishes from the South China Sea (Mazocridae and Diclidophoridae). Llewellyn J., 1970. Monogenea. In: Technical Trudy Biologo-Pochvennogo Instituta, reviews: taxonomy, genetics and evolution Vladivostok, 26 (129): 102–114. [In of parasites. Second Interna tional Russian]. Congress of Parasitology. J Parasitol., 56, Sect. II, Pt. 3, 493–504. Mamaev Yu. L., 1976. A new representative https://doi.org/10.2307/3277585. of microcotylid monogeneans, Monomacracanthus cadodai gen. & sp. Mamaev Yu. L., 1967. Pseudaxine triangula sp.n.and Metapseudaxine ventrosicula nov. Biologiya Morya, 3: 30–33. gen. & sp. n. and their position in the [In Russian]. system of Monogenoidea. Zoologicheskii Mamaev Yu. L., 1977. The monogeneans of Zhurnal, 46: 993–998. [In Russian]. the genus Polynemicola Unnithan, 1971. Mamaev Yu. L., 1968. Helminths of of Trudy Biologo-Pochvennogo Instituta, the South China Sea. In: Skrjabin K. I., Vladivostok, 47 (150): 89–100. Manaev Yu. L. (Eds) Helminths of the [In Russian]. Pacific Ocean. Moscow: Nauka, pp. 5–27. Mamaev Yu. L., 1981. Some new [In Russian]. monogenean species and genera of the Mamaev Yu. L., 1969. A new genus of family Mazocraeidae. Helminthologia, 18: monogeneans of the family 169–187. Calceostomatidae (Parona & Perugia, Mamaev Yu. L., 1986. The taxonomical 1890). Parazitologicheskii Sbornik, 24: composition of the family Microcotylidae 169–172. [In Russian]. Taschenberg, 1879 (Monogenea). Folia Mamaev Yu. L., 1970. Helminths of some Parasitol., 33, 199–206. food fishes of the Gulf Tonkin. In: Oshmarin, P.G., Manaev, Yu.L. & Mamaev Yu. L., 1988a. Monogeneans of the Lebedev, B.I. (Eds) Helminths of animals family Heteromicrocotylidae Unnithan, of Southeast Asia. Moscow: Nauka, 1916. Trudy Zoologicheskogo Instituta, 121–190. [In Russian]. Leningrad, 177: 35–48. [In Russian]. Mamaev Yu. L., 1972a. The description of a Mamaev Yu. L., 1988b. Polylabroides zini sp. new monogenean from the subfamily n., a new species of higher monogenean Choricotylinae, with some notes about from a marine fish, Acanthopagrus latus. genus Choricotyle compostition. Trudy Helminthologia, 25: 195–200.

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Mamaev Yu. L., 1989. On species Eduardo Caballero y composition and morphological features Caballero.Universidad Nacional Autonóma of the Microcotyle genus (Microcotylidae, de México. Instituto de Biologia Monogenoidea). In: Lebedev, B.I. (Ed.) Publicaciones Especiales, 4: 85–89. Investigation in parasitology, collection of Nguyen H. M., Nguyen H. V., Bui T. N., Ha papers. Vladivostok: DVNTs SSSR, 167 N. D., 2016. Two new axinid species pp. [In Russian]. (Monogenea: Axinidae) from the Pharao Mamaev Y. L., 1990. The systematical flyingfish Cypselurus naresii (Günther) composition of the family Heteraxinidae (Beloniformes: Exocoetidae) in the Gulf and other allied families of Monogenea. of Tonkin off Vietnam. Syst Parasitol, 93: Folia Parasitol. 37: 225–230. 387‒394. https://doi.org/10.1007/s11230- 016-9635-y. Mamaev Yu. L., Kurochin Yu. V., 1976. Monogeneans Caballeraxine chainaica Nguyen V. H., 2012. Helminth fauna of (Leb., Par. & Roitm. 1970), their mode of marine fishes in Halong Bay. PhD thesis., attachment to host, morphology and Thai Nguyen University, 136 pp. systematic position. Biologiya Morya, [In Vietnamese]. Vladivostok, 2: 16–21. [In Russian]. Parukhin A. M., 1976. Parasitic worms of Mamaev Yu. L., Parukhin A. M., 1970. food fishes from the southern seas. Monogeneans of the genus Osphyobothrus Akademiya Nauk Ukrainskoi SSR, Yamaguti, 1958 (Monogenoidea, Ordena Trudovogo Krasnogo Zhameni Diclidophoridae). Parazitologiya, 6: Institut Biologii Yuzhnykh Morei im. A. 503–311. [In Russian]. O. Kobalevskogo, Izdatelstvo “Naukova Dumka,” Kiev, 182 pp. [In Russian]. Mamaev Yu. L., Parukhin A. M., 1972. Monogeneans of the family Parukhin A. M., 1989. Parasitic worms of Plectanocotylidae Poche, 1926 new bottom fishes from the southern seas. representatives of the subfamily Akademiya Nauk Ukrainskoi SSR, Institut Plectanocotylinae. Parazitologiya, 6: Biologii Yuzhnykh Morei im. A. O. 65–74. [In Russian]. Kobalevskogo, Izdatelstvo “Naukova Dumka,” Kiev, 154 p. [In Russian]. Mamaev Yu. L., Parukhin A. M., 1976. Genus Polylabris Euzet et Cauwet, 1967 and Santos C. P., Buchmann K., Gibson D. I., some related species of microcotylids 2000. Pseudorhabdosynochus spp. (Monogenoidea: Microcotylidae). (Monogenea: Diplectanidae) from the gills Parazitologiya, 10: 245–254. [In of Epinephelus spp. in Brazilian waters. Syst. Parasitol., 45: 145–153 (2000). Te Russian]. B. Q., 1998. Parasites and fish diseases of Nagibina L. F., 1968. Bychowskya drepane, a grouper cage culture in Ha Long Bay. new genus and species of the family Scientific Reports, Research Institute for Calceostomatidae (Monogenea). Aquaculture No. 1, 14 p. [In Vietnamese]. Parazitologiya, 2: 289. Timofeeva T. A., 1981. New species of the Nagibina L. F., 1976. New species of the genus Horricauda (Monogenea, genus Diplectanum (Monogenoidea, Monocotylidae) Parazitologiya, 15: Diplectanidae). Trudy Biologo- 399–406. [In Russian]. Pochvennogo Instituta, 35 (138): 89–96. Timofeeva T. A., 1983. New representatives [In Russian]. of monocotylids (Monogenea, Nagibina L. F., 1977. New data on the genus Monocotylidae) from cartilaginous fishes Pseudodiplectanum Tripathi, 1955 of the South China and Yellow Seas. (Monogenoidea, Diplectanidae). Exerta Trudy Zoologicheskogo Instituta, parasitologica en memoria del Doctor Leningrad, 181: 35–47. [In Russian].

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Timofeeva T. A., 1984. New members of Vo T. D., Bristow G. A., Nguyen H. D., Vo T. monocotylids of the genus Monocotyle D., Nguyen N. T. N., 2010. The parasites and Merizocotyle from rays of the South of grouper and sea bass in Vietnam. Ho China and Yellow Seas (Monogenea, Chi Minh: Agriculture Publishing House, Monocotylidae). Parazitologiya, 18: 178 pp. 296–305. [In Russian]. Wheeler T. A., Chisholm L. A., 1995. Timofeeva T. A., 1989. New species of Monogenea versus Monogenoidea: the Dionchus genus from South China and case for stability in nomenclature. Syst. Yellow Seas (Monogenoidea, Parasitol., 30(3): 159–164. Dionchidae). In: Lebedev, B.I. (Ed.) https://doi.org/10.1007/BF00010466. Investigations in parasitology, collection of papers. Vladivostok: DVNTs AN WoRMS, 2020. Pseudorhabdosynochusbrunei SSSR, pp. 55–66. [In Russian]. Dang, Bristow, Schander & Berland, Timofeeva T. A., 2000. New monogeneans of 2013. Accessed at: genus Dionchus (Capsalidae: Dionchinae). http://www.marinespecies.org/aphia.php? Parazitologiya, 34: 252–258. p=taxdetails&id=834007 on 2020-02-24.

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