Capsaloides tetrapteri Yamaguti, 1968

Chisholm, Leslie A. & Whittington, Ian D., 2006, Revision of Capsaloides (Monogenea: Capsalidae) with a redescription of C. magnaspinosus Price, 1939 from the nasal tissue of Tetrapterus audax (Istiophoridae) collected off Nelson Bay, New South Wales, Australia, Zootaxa 1160, pp. 1-20 : 17-18

publication ID

https://doi.org/ 10.5281/zenodo.172308

DOI

https://doi.org/10.5281/zenodo.6255205

persistent identifier

https://treatment.plazi.org/id/03FC8787-E17B-FFD5-FED3-F9509C51FB71

treatment provided by

Plazi

scientific name

Capsaloides tetrapteri Yamaguti, 1968
status

 

Capsaloides tetrapteri Yamaguti, 1968 View in CoL ( Figs 3 View FIGURE 3 D, 4E)

Type­host: Tetrapterus angustirostris Tanaka, 1915 (Istiophoridae) .

Type­locality: Hawaii, USA [Pacific Ocean].

Additional records: Istiophorus platypterus (Shaw, 1792) and Makaira indica (Cuvier, 1832) , from Cape Bowling Green, off Townsville and Cape Moreton, off Brisbane, Queensland, Australia [Pacific Ocean] (see Speare 1994, 1999); Makaira nigricans Lacépède, 1802 , from Cape Moreton off Brisbane, Queensland, Australia [Pacific Ocean] (see Speare 1999).

Site: Gills.

Specimens examined: Holotype (USNPC 63600); 1 voucher (QM G212196).

Remarks

Yamaguti (1968) noted the very close similarity between C. tetrapteri , C. perugiai and C. istiophori but considered C. perugiai too poorly described to make detailed comparisons. The haptoral accessory sclerites of C. tetrapteri ( Fig. 4 View FIGURE 4 E) are similar morphologically to C. istiophori ( Figs 4 View FIGURE 4 A, 4B) and C. perugiae ( Figs 1 View FIGURE 1 F, 4D). Like C. perugiai and C. istiophori , the dorsomarginal body sclerites of C. tetrapteri are crownshaped and form a single row which ends in the posterior third of the body. The number of cusps associated with the sclerites decrease from anterior to posterior ( Fig. 3 View FIGURE 3 D). We therefore regard C. tetrapteri to be a synonym of C. perugiai .

Yamaguti mounted 10 specimens (holotype and 9 paratypes) of C. tetrapteri of varying sizes on a single slide (USNPC 63600). Many of these specimens have sparse vitellarium and appear to be immature. There were 3–5 sclerites (with 5–7 cusps) in the left isolated anterior group of dorsomarginal body sclerites with larger worms generally having more sclerites in this isolated group. The right isolated group of dorsomarginal body sclerites were only visible in larger worms (> 2,130 m total length). Speare (1994, 1999) recorded C. tetrapteri from the gills of M. indica and I. platypterus off the Queensland coast, Australia. We did not find this species on any of the fish we examined off Nelson Bay, New South Wales, Australia.

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