WoRMS taxon details
Dihemistephanus fragilis (Linton, 1900) Yamaguti, 1971
727334 (urn:lsid:marinespecies.org:taxname:727334)
accepted
Species
Distomum fragile Linton, 1900 · unaccepted (Superseded combination)
Stenocollum fragile (Linton, 1900) Stafford, 1904 · unaccepted (Superseded combination)
marine
(of Distomum fragile Linton, 1900) Linton, E. (1900). Fish parasites collected at Woods Hole in 1898. Bulletin of the United States Fish Commission 19:267-304.
page(s): 295 [details]
page(s): 295 [details]
Type locality contained in Virginian
type locality contained in Virginian [from synonym] [view taxon] [details]
Taxonomic remark I have followed Dollfus (1960) in considering Dihemistephanus fragilis a synonym of D. lydiae. Dollfus showed how badly...
Taxonomic remark I have followed Dollfus (1960) in considering Dihemistephanus fragilis a synonym of D. lydiae. Dollfus showed how badly preserved specimens of D. lydiae resemble descriptions of D. fragilis. Yamaguti (1971) did not agree and recognized D. fragilis based on differences in the number of oral spines: in view of the fact that these are easily lost and often difficult to count, this requires confirmation. As demonstrated by the accacoeliids, the trematode fauna of Mola mola is similar on both sides of the Atlantic. [details]
WoRMS (2026). Dihemistephanus fragilis (Linton, 1900) Yamaguti, 1971. Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=727334 on 2026-05-13
Date
action
by
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
(of Distomum fragile Linton, 1900) Linton, E. (1900). Fish parasites collected at Woods Hole in 1898. Bulletin of the United States Fish Commission 19:267-304.
page(s): 295 [details]
new combination reference Yamaguti, S. (1971). Synopsis of digenetic trematodes of vertebrates. 2 Vols. <em>Keigaku Publishing Co., Tokyo.</em> pp. 1-1074.
page(s): 154 [details]
page(s): 295 [details]
new combination reference Yamaguti, S. (1971). Synopsis of digenetic trematodes of vertebrates. 2 Vols. <em>Keigaku Publishing Co., Tokyo.</em> pp. 1-1074.
page(s): 154 [details]
Taxonomy
source of synonymy
Gibson, D.I. (1996) Guide to the parasites of Canadian fishes. Part IV. Trematoda. NRC Research Press, Ottawa, 373 pp.
note: Syn. of D. lydiae. [details]
status source Dollfus, R. P. (1960). Transformation de Dihemistephanus lydiae (M. Stossich, 1896) A. Looss, 1901 en Stenocollum fragile (Edwin Linton, 1900) J. Stafford, 1904 par maceration. <em>Annales de Parasitologie Humaine et Comparee.</em> 35: 528–537., available online at https://doi.org/10.1051/parasite/1960354528
page(s): 433; note: synonym of D. lydiae [details]
note: Syn. of D. lydiae. [details]
status source Dollfus, R. P. (1960). Transformation de Dihemistephanus lydiae (M. Stossich, 1896) A. Looss, 1901 en Stenocollum fragile (Edwin Linton, 1900) J. Stafford, 1904 par maceration. <em>Annales de Parasitologie Humaine et Comparee.</em> 35: 528–537., available online at https://doi.org/10.1051/parasite/1960354528
page(s): 433; note: synonym of D. lydiae [details]
Other
additional source
Threlfall, W. (1967). Some parasites recovered from the ocean sunfish, Mola mola (L.) in Newfoundland. Canadian Field-Naturalist, Ottawa 81:168-172, fig. 1, tabs. 1-2. (vii/ix-1967), available online at https://doi.org/10.5962/p.342763
page(s): 168 [details] Available for editors
[request]
page(s): 168 [details] Available for editors
[request]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Taxonomic remark I have followed Dollfus (1960) in considering Dihemistephanus fragilis a synonym of D. lydiae. Dollfus showed how badly preserved specimens of D. lydiae resemble descriptions of D. fragilis. Yamaguti (1971) did not agree and recognized D. fragilis based on differences in the number of oral spines: in view of the fact that these are easily lost and often difficult to count, this requires confirmation. As demonstrated by the accacoeliids, the trematode fauna of Mola mola is similar on both sides of the Atlantic. [details]
