Notes on Two New Monostomes with Rudimentary Ventral Suckers

Morishita, K.

doi:10.2307/3270876

Cited by 10 publications

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“…established the genus Morishitium Witenberg, 1928 with the reassignment of 2 species of cyclocoelids to Morishitium: Cyclocoelum vagum Morishita, 1924 (type species) from the golden pheasant, Chrysolophus picta (Linnaeus), and Cyclocoelum distomatum Morishita, 1924 from the sparkling pheasant, Phasianus scintillans Gould that had been described by Morishita (1924) from Japan. Yamaguti (1971) recognized 8 additional species in the genus: Morishitium bivesiculatum (Prudhoe, 1944) from the Ceylon or great Indian green barbet, Megalaima zeylanicus (Gmelin) (reported as Thereiceryx zeylanicus Gmelin), from Ceylon (Prudhoe 1944); Morishitium dollfusi (Timon-David, 1950) from the European or black-bellied magpie, Pica pica (Linnaeus), from France (Timon-David 1950); Morishitium dumetellae (Zeliff, 1943) from the grey catbird, Dumetella carolinensis (Linnaeus), from Pennsylvania, U.S.A. (Zeliff 1943); Morishitium ominosum (Kossack,1911), originally described as Hyptiasmus ominosus Kossack, 1911 from the grey crane or trane, Grus level of esophagus whereas in M. dollfusi the anterior extent of vitelline fields reach anteriorly to level of oral sucker.…”

Section: Introductionmentioning

confidence: 99%

Key to the species of Morishitium Wienberg, 1928 (Cyclocoelidae), with the description of a new species from the red-billed blue magpie, Urocissa erythrorhyncha (Boddaert) (Corvidae) from Guizhou Province, People’s Republic of China

Dronen

Tkach

2014

Zootaxa

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The 11 species currently assigned to Morishitium and the new species described herein are divided into the rauschi, straightum and vagum body types, and keys to species are provided. Morishitium urocissae n. sp. is described from the red-billed blue magpie, Urocissa erythrorhyncha (Corvidae), from the Dashahe Nature Reserve, Guizhou Province, southwestern Peoples Republic of China. Morishitium urocissae n. sp. is similar to M. bivesiculatum by having a similar ratio of the width of the pharynx to the width of the oral sucker (1:1.0-1:1.2 compared to 1:1.0) and a similar sized cirrus sac (470-565 long; 3-5% of body length compared to 400; 4%). Both species also have the anterior extent of the vitelline fields reaching the level of the pharynx, which distinguishes them from all other species in the genus that have an oral sucker present and lack a ventral. The new species differs from M. bivesiculatum by having a larger maximum egg size (135 by 70 compared to 127 by 65), uterine loops that overreach the ceca laterally rather than being intercecal, a shorter distance from the posterior testis to the posterior arch of the cyclocoel (70 [0-110] compared to 400), and by being from a magpie from the People's Republic of China rather than being from a barbet from Sri Lanka. The new species is most similar to M. dumetellae, but differs from this species by having wider eggs (65 compared to 60), a longer body (10,400- 13,350 compared to 8,500), a shorter cirrus sac (470-565; 3-5% of the body length compared to 595; 7%), a smaller ratio of the pharynx to the oral sucker (1:1.0-1:1.3 compared to 1:1.7), more laterally extensive uterine loops (overreaching the ceca compared to being interececal), the anterior extent of the vitelline fields reaching to the level of the pharynx as compared to terminating posterior to the cecal bifurcation, and by being from a magpie from the People's Republic of China rather than from a catbird from the United States.

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Section: Introductionmentioning

confidence: 99%

Key to the species of Morishitium Wienberg, 1928 (Cyclocoelidae), with the description of a new species from the red-billed blue magpie, Urocissa erythrorhyncha (Boddaert) (Corvidae) from Guizhou Province, People’s Republic of China

Dronen

Tkach

2014

Zootaxa

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Studies on the lymph system of digenetic trematodes

Willey

1930

Journal of Morphology

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A survey is made of the literature pertaining to lymph systems of the various groups of trematodes in which they occur, together with descriptions of the lymph systems in several forms not previously studied. The author reports the presence of a lymph system in two families, Cyclocoelidae and Heronimidae, which heretofore were considered to be without such organs, and the significance of this characteristic feature of certain trematodes is discussed as bearing on the problem of the evolution of monostomes, amphistomes, and other distomes. The gross morphology and the histology of the structural units of the system are described for Paramphistomum stunkardi, an amphistome from a fish, and for Diplodiscus temporatus, an amphistome from an amphibian, together with observations on the ramifications and structural components of the system in Cotylophoron cotylophorum. Various theoretical considerations concerning the development, function, and taxonomic and phylogenetic significance are treated on the basis of the morphology of the system and its resemblance to certain components of the vascular system of higher forms. The lymph system in trematodes is the natural starting‐point in any study of the phylogenetic development of vascular systems.

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The excretory system of the trematode, Typhlocoelum cucumerinum, with notes on lymph‐like structures in the family Cyclocoelidae

Willey

1935

Journal of Morphology

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Notes on Two New Monostomes with Rudimentary Ventral Suckers

Cited by 10 publications

References 0 publications

Key to the species of Morishitium Wienberg, 1928 (Cyclocoelidae), with the description of a new species from the red-billed blue magpie, Urocissa erythrorhyncha (Boddaert) (Corvidae) from Guizhou Province, People’s Republic of China

Key to the species of Morishitium Wienberg, 1928 (Cyclocoelidae), with the description of a new species from the red-billed blue magpie, Urocissa erythrorhyncha (Boddaert) (Corvidae) from Guizhou Province, People’s Republic of China

Studies on the lymph system of digenetic trematodes

The excretory system of the trematode, Typhlocoelum cucumerinum, with notes on lymph‐like structures in the family Cyclocoelidae

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