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Parachordatortilis n. g. (Nematoda: Spirurida: Acuariidae), with a redescription of P.mathevossianae (Petrov & Chertkova, 1950) n. comb., a parasite of Falco tinnunculus L. (Aves: Falconiformes)


Parachordatortilis n. g. is proposed as a monotypic genus for Parachordatortilis mathevossianae (Petrov & Chertkova, 1950) n. comb. (Spirurida, Acuariidae), previously Dispharynx mathevossianae Petrov & Chertkova, 1950. The new genus can be distinguished from all other acuariid genera by having cordons with a sinistral torsion. Parachordatortilis possesses cordons consisting of two rows of delicate cuticular plates delimiting a longitudinal canal. This pattern of cordon structure suggests that Parachordatortilis is closely related to Dispharynx Railliet, Henry & Sisoff, 1912, Synhimantus Railliet, Henry & Sisoff, 1912 and Chordatortilis Machado de Mendonça & Olivera de Rodrigues, 1985. P. mathevossianae is redescribed on the basis of light and scanning electron microscopical observations of specimens collected from a common kestrel Falco tinnunculus L. in southern Italy.

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We are grateful to Dr M. Knoff (Instituto Oswaldo Cruz, Laboratório de Helmintos Parasitos de Vertebrados) for lending specimens. The type-specimens deposited in the Museum für Naturkunde, Humboldt-Universität zu Berlin, were studied during the course of a research visit of the senior author funded by Synthesys DE-TAF-3124 (EC FP6) and kindly hosted by Dr B. Neuhaus. We thank to Dr M. Kinsella (HelmWest Laboratory, Missoula, Montana, USA) for his help and stimulating interest at the present study. Studies included in the present article were funded also by the National Science Fund of the Republic of Bulgaria, Grant DO/02-271/18.12.08, and by the Amministrazione Provinciale di Cosenza, Assessorato all’Ambiente.

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Correspondence to Boyko B. Georgiev.

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Mutafchiev, Y., Santoro, M. & Georgiev, B.B. Parachordatortilis n. g. (Nematoda: Spirurida: Acuariidae), with a redescription of P.mathevossianae (Petrov & Chertkova, 1950) n. comb., a parasite of Falco tinnunculus L. (Aves: Falconiformes). Syst Parasitol 76, 191–197 (2010).

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  • Buccal Cavity
  • Excretory Pore
  • Anterior Extremity
  • Falco Tinnunculus
  • Helminthological Collection