Tajikacelis truncata, Curini-Galletti & Schockaert, 2021

Curini-Galletti, Marco & Schockaert, Ernest R., 2021, Six new species ofArchimonocelididae Meixner, 1938 (Platyhelminthes, Proseriata) from the Pacific, with proposal of a new genus, Zootaxa 4965 (3), pp. 515-528 : 522

publication ID

https://doi.org/ 10.11646/zootaxa.4965.3.6

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scientific name

Tajikacelis truncata

sp. nov.

Tajikacelis truncata n. sp.

( Figs 1F View FIGURE 1 , 2F View FIGURE 2 , 7 View FIGURE 7 , 10F View FIGURE 10 )

Diagnosis. Species of Tajikacelis with a recurved stylet, 49 μm long in the holotype, with a straight proximal opening of 19 μm, narrowing to 10 μm and 5 μm wide at the distal opening, which is square-ended. Pharynx at about midbody. With elongate seminal vesicles. Ovaries at the base of the pharynx and about 30 densely packed testes between brain and ovaries. Female duct widened to a prepenial bursa with a vagina.

Occurrence. Gulf of Panama, Isla Bartolomè (Las Perlas Is., Panama) (8°40’22.87”N; 79° 3’12.58”W), about 1 m deep, coarse sand (type locality) (December 2011 by M.C-G). GoogleMaps Iguana Island ( Panama)(7°37’45.35”N; 79°59’50.76”W), at a depth of 1.5–2 m, medium sand (February 2016 by M.C-G) GoogleMaps .

Material studied. Four whole mounts (one of which designated as holotype) and two serially sectioned animals from the type locality (holotype: FNMH http://id.luomus.fi/KV.668; paratypes CZM831-835 ); three whole mounts and one sectioned animal from Iguana Island ( CZM836-839 ) .

Etymology. The species name refers to the truncated tip of the stylet.

Additional remarks. The dark round structures as seen in T. acuta n.sp are also present in this species ( Fig. 7 A View FIGURE 7 ). The species is cited as Archimonocelididae gen. n. 2 sp. n. 2 in Scarpa et al. (2017).

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