Dactylostomum is a genus of trematodes in the family Opecoelidae. It is synonymised with Opedunculata Dwivedi, 1975.Dwivedi, M. P. (1975). A new genus of trematode with anus (Trematoda: Opecoelidae) from Sapna Dam, Betul, M. P. In Tiwari, K. & Srivastava, C. (Eds.), Dr. B.S. Chauhan commemoration volume, 1975 (pp. 93–97). Vani Vihar, Orissa, India: Zoological Society of India.

Species Dactylostomum armatum (Dwivedi, 1975) Cribb, 2005Cribb, T. H. (2005). Family Opecoelidae Ozaki, 1925. In Jones, A., Bray, R. & Gibson, D. (Eds.), Keys to the Trematoda, Volume 2 (pp. 443–531). London: The Natural History Museum and CABI. Dactylostomum caballeroi Martin, 1960Martin, W. E. (1960). Hawaiian helminths. II. Dactylostomum caballeroi n. sp. (Trematoda: Opecoelidae). In Libro Homenaje al Dr Eduardo Caballero y Caballero Jubileo 1930-1960 (pp. 203–205). Mexico City: Instituto Politecnico Nacional Escuela Nacional de Ciencias Biologicas. Dactylostomum cribbi Gibson, Bray & Langdon, 1990Gibson, D. I., Bray, R. A. & Langdon, J. S. (1990). Dactylostomum cribbi n. sp., a new opecoeline digenean from the Australian freshwater fish Gadopsis marmoratus Richardson. Systematic Parasitology, 17(2), 75–80. Dactylostomum epinepheli Wang, 1982Wang, P. Q. (1982). Some digenetic trematodes of marine fishes from Fujian Province, China. Oceanologia et Limnologia Sinica, 13, 179–194. Dactylostomum gracile Woolcock, 1935 Dactylostomum griffithsi Bray, 1987Bray, R. A. (1987). Some helminth parasites of marine fishes of south Africa: family Opecoelidae (Digenea). Journal of Natural History, 21(4), 1049–1075. Dactylostomum harishii Agrawal & Agarwal, 1988Agrawal, S. C. & Agarwal, G. P. (1988). Dactylostomum harishaii sp. nov. from the intestine of a fresh water eel Mastacembelus armatus (Lac). Indian Journal of Helminthology, 40(1), 44–46. Dactylostomum jhansiensis Agarwal & Agrawal, 1988Agarwal, G. P. & Agrawal, S. C. (1988). On a new digenetic trematode, Dactylostomum jhansiensis (family: Opecoelidae Ozaki, 1925) n. sp. from the intestine of fresh water eel, Mastacembelus armatus (Lac.). Journal of Scientific Research of the Banaras Hindu University, 38(1), 129–132. Dactylostomum kashiensis (Maurya, Agarwal & Singh, 1989) Cribb, 2005Maurya, A. K., Agarwal, G. P. & Singh, S. P. (1989). On a new species of the genus Opedunculata Dwivedi, 1975 from a fresh water fish Mastacembelus armatus (Lacepede) from River Ganga at Varanasi. Journal of Scientific Research of the Banaras Hindu University, 39(1–2), 39–42. Dactylostomum longivesiculum Shimazu & Machida, 1985Shimazu, T. & Machida, M. (1985). Two new and two known opecoelid trematodes from goatfishes in Japan. Bulletin of the National Science Museum, Zoology, 11(1), 1–6. Dactylostomum manteri Ramadan, 1985Ramadan, M. M. (1985). On three new species of Dactylostomum Woolcock, (Trematoda: Opecoelidae) from the Red Sea fishes. Japanese Journal of Parasitology, 34(6), 473–478. Dactylostomum nicolli Aken'Ova, Cribb & Bray, 2003Aken'Ova, T. O., Cribb, T. H. & Bray, R. A. (2003). A new species of Dactylostomum Woolcock, 1935 (Digenea: Opecoelidae) from the goatfish Upeneichthys lineatus (Bloch & Schneider) (Mullidae) in Western Australian waters. Systematic Parasitology, 56(1), 63–68. Dactylostomum sapani (Dwivedi & Dwivedi, 1982) Cribb, 2005Dwivedi, M. & Dwivedi, V. (1982). A new trematode parasite Opedunculata sapani n. sp. (Trematode: Opecoelidae) from Sapanadam Betul. Uttar Pradesh Journal of Zoology, 2(1), 7–9. Dactylostomum satpali Agrawal & Sharma, 1989Agrawal, S. C. & Sharma, S. K. (1989). Dactylostomum satpali sp. nov. from the intestine of a fresh water eel, Mastacembelus armatus (Lac.). Indian Journal of Helminthology, 41 (Supplement), 108–112. Dactylostomum tanegashimense Shimazu & Machida, 1985 Dactylostomum vitellosum Manter, 1940Manter, H. W. (1940). Digenetic trematodes of fishes from the Galapagos Islands and the neighboring Pacific. Allan Hancock Pacific Expeditions, 2, 364–473. Dactylostomum woolcocki Ramadan, 1985 Dactylostomum yamagutii Ramadan, 1985

Species later synonymised with species of Dactylostomum Dactylostomum armatum (Dwivedi, 1975) Cribb, 2005 Opedunculata armatus Dwivedi, 1975 Dactylostomum kashiensis (Maurya, Agarwal & Singh, 1989) Cribb, 2005 Opedunculata kashiensis Maurya, Agarwal & Singh, 1989 Dactylostomum sapani (Dwivedi & Dwivedi, 1982) Cribb, 2005 Opedunculata sapani Dwivedi & Dwivedi, 1982

References