Benz GW and Boxshall GA (2017), Redescription of Tripaphylus musteli (van Bened...

ECB-ART-45537

Syst Parasitol 2017 Jul 01;946:689-698. doi: 10.1007/s11230-017-9734-4.

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Redescription of Tripaphylus musteli (van Beneden, 1851) (Copepoda: Sphyriidae) and the relegation of Paeon Wilson, 1919 to synonymy with Tripaphylus Richiardi in Anonymous, 1878.

Benz GW , Boxshall GA .

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Tripaphylus musteli (van Beneden, 1851) (Copepoda, Siphonostomatoida, Sphyriidae) is redescribed from an adult female collected from the branchial chamber of a starry smooth-hound, Mustelus asterias Cloquet (Carcharhiniformes, Triakidae), captured in the English Channel off Portland, UK. The new account of T. musteli is the first based on a complete adult female and highlighted the lack of a robust distinction separating Tripaphylus Richiardi, in Anonymous, 1878 and Paeon Wilson, 1919 prompting us to relegate Paeon to a junior subjective synonym of Tripaphylus. In the light of this synonymy the eight former species of Paeon are transferred to Tripaphylus as follows: T. ferox (Wilson, 1919) new combination, T. elongatus (Wilson, 1932) new combination, T. vassierei (Delamare Deboutteville & Nuñes-Ruivo, 1954) new combination, T. lobatus (Kirtisinghe, 1964) new combination, T. asymboli (Turner, Kyne & Bennett, 2003) new combination, T. versicolor (Wilson, 1919) new combination, T. australis (Kabata, 1993) new combination, and T. triakis (Castro Romero, 2001) new combination. Comparisons between terminology used in this report and that in the literature indicate that all transformed adult females of Tripaphylus probably possess a full complement of cephalic appendages and maxillipeds. All limbs, with the exception of the maxillae share a general morphological similarity to the corresponding appendages of conspecific males. The maxilla of the transformed adult female of Tripaphylus is a small digitiform protuberance associated with a swelling in some species.

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References :

Turner, Description of Paeon asymboli n. sp. (Copepoda: Sphyriidae), parasitic on Asymbolus spp. (catsharks) and a new host record for P. australis Kabata, 1993. 2003, Pubmed

	Fig. 1. Tripaphylus musteli (van Beneden, 1851) (Siphonostomatoida, Sphyriiidae) transformed ovigerous female from a starry smooth-hound Mustelus asterias (Carcharhiniformes, Triakidae) captured in the English Channel off Portland, UK. Scale-bar: 1 cm divided into mm
	Fig. 2. Tripaphylus musteli (van Beneden, 1851) A, General habitus; decapitated specimen with neck aligned (at dashed line) to approximate intact condition; head in ventral view, trunk in dorsal view; eggs within ovisacs not illustrated; B, Cephalothorax (head), ventral view; C, Left lateral view. Abbreviations: as, antennal swelling; ls, lateral swelling; ms, maxillary swelling; mx2, maxilla; mxp, maxilliped
	Fig. 3. Tripaphylus musteli (van Beneden, 1851). A, Cephalothorax (head), slightly different ventral view than that depicted in Fig. 1B; B, Antennule; C, Antenna; arrows indicate denticulate patches; numbers correspond to element identification convention of Kabata (1979); D, Mouth tube, anterior view; E, Mandible; F, Maxillule, lateral view; G, Maxilla; H, Maxilliped. Abbreviations: as, antennal swelling; la, labium; lb, labrum; ls, lateral swelling; mr, myxal region of maxilliped; ms, maxillary swelling; mx2, maxilla; mxp, maxilliped; w?, whip?