<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The systematic position of <italic>Quentinia mesovitellinica</italic> (<xref ref-type="bibr" rid="j_helm-2023-0031_ref_019">Rêgo, 1967</xref>) (Cestoda, Cyclophyllidea) from the hystricomorph rodent <italic>Galea spixii</italic> (Wagler) (Caviidae) in Brazil is reevaluated based on published information. <italic>Quentinia mesovitellinica</italic> is generally thought to belong to the family Catenotaeniidae, being thus the only catenotaeniid cestode parasitizing hystricomorph rodents and also the only catenotaeniid in South America. However, the present study shows that <italic>Q. mesovitellinica</italic> differs fundamentally from <italic>Catenotaenia</italic> Janicki, 1904 sensu lato and other catenotaeniids with respect to several morphologic features, but shares these features with <italic>Monoecocestus</italic> Beddard, 1914 sensu <xref ref-type="bibr" rid="j_helm-2023-0031_ref_001">Beveridge (1994)</xref>, a genus in the family Anoplocephalidae sensu stricto (i.e. sensu Spasskii, 1951). However, <italic>Q. mesovitellinica</italic> is not assigned here to <italic>Monoecocestus</italic>, because the latter is a morphologically heterogeneous genus and will probably be split when subjected to a comprehensive phylogenetic and taxonomic analysis. Instead, <italic>Quentinia</italic> <xref ref-type="bibr" rid="j_helm-2023-0031_ref_021">Spasskii, 1969</xref> is considered a valid genus in the family Anoplocephalidae s. s. The morphologically closely related <italic>Monoecocestus eljefe</italic> <xref ref-type="bibr" rid="j_helm-2023-0031_ref_012">Haverkost &amp; Gardner, 2010</xref> from <italic>Galea musteloides</italic> Meyen in Bolivia is assigned to <italic>Quentinia</italic> as <italic>Q</italic>. <italic>eljefe</italic> (<xref ref-type="bibr" rid="j_helm-2023-0031_ref_012">Haverkost &amp; Gardner, 2010</xref>) n. comb. An amended diagnosis is provided for <italic>Quentinia</italic>.</p>
</abstract>

The systematic position of Quentinia mesovitellinica (Rêgo, 1967) (Cestoda, Cyclophyllidea) from the hystricomorph rodent Galea spixii (Wagler) (Caviidae) in Brazil is reevaluated based on published information. Quentinia mesovitellinica is generally thought to belong to the family Catenotaeniidae, being thus the only catenotaeniid cestode parasitizing hystricomorph rodents and also the only catenotaeniid in South America. However, the present study shows that Q. mesovitellinica differs fundamentally from Catenotaenia Janicki, 1904 sensu lato and other catenotaeniids with respect to several morphologic features, but shares these features with Monoecocestus Beddard, 1914 sensu Beveridge (1994), a genus in the family Anoplocephalidae sensu stricto (i.e. sensu Spasskii, 1951). However, Q. mesovitellinica is not assigned here to Monoecocestus, because the latter is a morphologically heterogeneous genus and will probably be split when subjected to a comprehensive phylogenetic and taxonomic analysis. Instead, Quentinia Spasskii, 1969 is considered a valid genus in the family Anoplocephalidae s. s. The morphologically closely related Monoecocestus eljefe Haverkost & Gardner, 2010 from Galea musteloides Meyen in Bolivia is assigned to Quentinia as Q. eljefe (Haverkost & Gardner, 2010) n. comb. An amended diagnosis is provided for Quentinia.

Systematic position of the enigmatic <italic>Quentinia mesovitellinica</italic> (Rêgo, 1967) (Cestoda, Cyclophyllidea)

Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Systematic position of the enigmatic  (Rêgo, 1967) (Cestoda, Cyclophyllidea)

The systematic position of Quentinia mesovitellinica (Rêgo, 1967) (Cestoda, Cyclophyllidea) from the hystricomorph rodent Galea spixii (Wagler) (Caviidae) in...

Systematic position of the enigmatic Quentinia mesovitellinica (Rêgo, 1967) (Cestoda, Cyclophyllidea)

Article Category: Research Note

Published Online: Dec 26, 2023

Page range: 246 - 252

Received: Sep 12, 2023

Accepted: Sep 21, 2023

DOI: https://doi.org/10.2478/helm-2023-0031

Keywords
Catenotaeniidae, Anoplocephalidae, Cestoda, Caviidae

© 2023 V. Haukisalmi, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Systematic position of the enigmatic Quentinia mesovitellinica (Rêgo, 1967) (Cestoda, Cyclophyllidea)

Article Category: Research Note

Published Online: Dec 26, 2023

Page range: 246 - 252

Received: Sep 12, 2023

Accepted: Sep 21, 2023

DOI: https://doi.org/10.2478/helm-2023-0031

KeywordsCatenotaeniidae, Anoplocephalidae, Cestoda, Caviidae

© 2023 V. Haukisalmi, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Catenotaeniidae, Anoplocephalidae, Cestoda, Caviidae