Validation of Christianella Guiart, 1931 (Cestoda: Trypanorhyncha) and its taxonomic relationship with Grillotia Guiart, 1927

Christianella Guiart, 1931 (Cestoda: Trypanorhyncha) is redefined as a subgenus of Grillotia Guiart, 1927 based on the type-species, G. (C.) minuta (van Beneden, 1849), from the elasmobranch Squatina squatina (Linnaeus). Grillotia smarisgora (Wagener, 1854) is treated as a synonym of G. (C.) minuta,...

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Bibliographic Details
Published in:Systematic parasitology 2010-06, Vol.76 (2), p.111-129
Main Authors: Beveridge, I, Campbell, R. A
Format: Article
Language:English
Subjects:
Agriculture
Animal Anatomy
Animal Ecology
Animal Systematics/Taxonomy/Biogeography
Animals
Biomedical and Life Sciences
Cestoda
Cestoda - anatomy & histology
Cestoda - classification
Cestode Infections - parasitology
Cestode Infections - veterinary
Elasmobranchii
Elasmobranchii - parasitology
Fish Diseases - parasitology
Grillotia
Histology
Life Sciences
Morphology
Species Specificity
Squatina
Squatina squatina
Trypanorhyncha
Zoology
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Summary:Christianella Guiart, 1931 (Cestoda: Trypanorhyncha) is redefined as a subgenus of Grillotia Guiart, 1927 based on the type-species, G. (C.) minuta (van Beneden, 1849), from the elasmobranch Squatina squatina (Linnaeus). Grillotia smarisgora (Wagener, 1854) is treated as a synonym of G. (C.) minuta, as are G. angeli Dollfus, 1969 and G. bothridiopunctata Dollfus, 1969. Other species included in the subgenus are G. (C.) carvajalregorum Menoret & Ivanov, 2009 (formerly Progrillotia dollfusi Carvajal & Rego, 1983), G. (C.) australis Beveridge & Campbell, 2001, G. (C.) longispinis (Linton, 1890) n. comb. (formerly Rhynchobothrium longispine Linton, 1890) and G. (C.) yuniariae Palm, 2004. The subgenus is similar to Grillotia Guiart, 1927 (sensu stricto), having two bothria and an atypical heteroacanthous armature, but differs in having a single row of intercalary hooks, fewer, elongate segments with testes often in longitudinal columns, a distinctive basal armature, an internal seminal vesicle which extends beyond the cirrus or hermaphroditic sac and no uterine pore. The adults of three species are known, all parasitising members of Squatina Duméril.
ISSN:0165-5752
1573-5192
DOI:10.1007/s11230-010-9239-x