Capsaloides marielenae (Lamothe­Argumedo, 1968) Lamothe­Argumedo, 1996 (Figs 3 B, 4C)

Synonyms: Caballerocotyla marielenae Lamothe­Argumedo, 1968; Capsaloides mariaelenae (Lamothe­Argumedo, 1968) Lamothe­Argumedo, 1996 .

Type­host: Istiophorus platypterus (Shaw, 1792) (Istiophoridae) . The type­host was originally recorded as Istiophorus greyi Jordan & Evermann, 1926 which is now considered a synonym of I. platypterus (see Froese & Pauly 2005).

Type­locality: Puerto Angel, Oaxaca, Mexico [Pacific Ocean].

Site: Gills.

Specimens examined: Two paratypes (CNHE 000133); 1 paratype (USNPC 75517).

Remarks

This species was originally described by Lamothe­Argumedo (1968) as a member of Caballerocotyla but was later transferred to Capsaloides by Lamothe­Argumedo (1996) because of the morphology of the haptoral accessory sclerites and the bifid posterior pair of septa. The number of cusps associated with the dorsomarginal body sclerites decrease posteriorly (Fig. 3 B). There are 6–8 sclerties (with 5–7 cusps) in the left isolated anterior group of dorsomarginal sclerites. The right isolated group of dorsomarginal sclerites has 3 bi­ or tricuspid sclerites. Close examination of type­material revealed that the body shape, the morphology of the haptoral accessory sclerites (Fig. 4 C) and the dorsomarginal body sclerites (Fig. 3 B), which end in the posterior third of the body, are very similar to those of C. istiophori (described from the same host species off Hawaii), C. perugiai and C. tetrapteri . We therefore consider C. marielenae a synonym of C. perugiai (see also Remarks under C. istiophori, C. perugiai and C. tetrapteri). Lamothe­Argumedo (1968) described the egg as rhomboidal with an appendage present on 1 pole.