Revision of Metahaliotrema Yamaguti, 1953 (Monogenoidea: Dactylogyridae), with new and previously described species from the spotted scat Scatophagus argus (Linnaeus) (Perciformes: Scatophagidae) in Vietnam.
An emended diagnosis of Metahaliotrema Yamaguti, 1953 (Monogenoidea: Dactylogyridae) is provided based on specimens of six species collected from the spotted scat Scatophagus argus (Linnaeus) (Scatophagidae) in Vietnam: M. scatophagi Yamaguti, 1953 (type-species); M. cf. yamagutii Mizelle & Price, 1964; M. mizellei Venkatanarasaiah, 1981; M. kulkarnii Venkatanarasaiah, 1981; M. ypsilocleithrum n. sp.; and M. similis n. sp. Methaliotrema filamentosum Venkatanarasaiah, 1981 from the whipfin silver-biddy Gerres filamentosus Cuvier (Gerreidae) is included as the only other valid member of the genus. Metahaliotrema arii Yamaguti, 1953 from an ariid catfish is considered incertae sedis within the Dactylogyridae; and Metahaliotrema srivastavai Singh & Agarwal, 1994 from a bagrid catfish is transferred to Chauhanellus Bychowsky & Nagibina, 1969 as Chauhanellus srivastavai (Singh & Agarwal, 1994) n. comb. Metahaliotrema geminatohamula Pan, Ding & Zhang, 1995 from spotted scat in China is determined to be a junior subjective synonym of M. scatophagi. The two new species and M. scatophagi, M. mizellei, and M. kulkarnii are described or redescribed based on specimens from Vietnam.
Health Education Program, School of Health Professions, Idaho State University, Campus Box 8090, Pocatello, ID, 83209, USA. kritdela@isu.edu.
Delane C
DC
Kritsky
Department of Parasitology, IEBR, Vietnam Academy of Science & Technology, 18 Hoàng Quốc Việt, Cầu Giấy, Hanoi, Vietnam.
Ha Van
HV
Nguyen
Department of Parasitology, IEBR, Vietnam Academy of Science & Technology, 18 Hoàng Quốc Việt, Cầu Giấy, Hanoi, Vietnam.
Ngo Duy
ND
Ha
Department of Biology, Brigham Young University, Provo, UT, 84602, USA.
Richard A
RA
Heckmann
D000818:Animals; D005880:Gills / Q000469:parasitology; D010473:Perciformes / Q000469:parasitology*; D013045:Species Specificity; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification*; D014744:Vietnam