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Redescription of Naobranchia variabilis Brian, 1924 (Siphonostomatoida: Lernaeopodidae), parasitic on the grey triggerfish Balistes capriscus Gmelin in Algerian coastal waters


Adults of both sexes of Naobranchia variabilis Brian, 1924 (Lernaeopodidae) are described based on material collected from the gill filaments of Balistes capriscus Gmelin, caught off the coast of Algeria. This is the second species of Naobranchia Hesse, 1863 to be found in the Mediterranean and the host record is new. Morphological comparisons are made with existing descriptions of N. variabilis and it is inferred, from small variations between material from different hosts and different localities, that N. variabilis may represent a species complex. The corrugated lobes on the head of Naobranchia females are interpreted as novel structures involved with temporary attachment during feeding.

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The first author would like to thank the Natural History Museum for use of facilities during her study visit in November 2014.

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Correspondence to Geoffrey Allan Boxshall.

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Hamza, F., Kechemir-Issad, N. & Boxshall, G.A. Redescription of Naobranchia variabilis Brian, 1924 (Siphonostomatoida: Lernaeopodidae), parasitic on the grey triggerfish Balistes capriscus Gmelin in Algerian coastal waters. Syst Parasitol 91, 157–165 (2015).

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  • Spinosa
  • Gill Filament
  • Algerian Material
  • Terminal Claw
  • Spiniform Seta