Typhlopolycystis norenburgi, Schockaert & Moons & Janssen & Tessens & Reygel & Revis & Jouk & Willems & Artois, 2019

Schockaert, Ernest R., Moons, Patricia, Janssen, Toon, Tessens, Bart S., Reygel, Patrick C., Revis, Nathalie, Jouk, Philippe E. H., Willems, Wim R. & Artois, Tom J., 2019, On the genus Typhlopolycystis Karling, 1956 (Platyhelminthes, Kalyptorhynchia, Polycystididae), with data on the five known species and the description of eleven new species, Zootaxa 4603 (1), pp. 81-104 : 89

Typhlopolycystis norenburgi n. sp Artois and Schockaert.

( Fig. 6 )

Diagnosis. Species of Typhlopolycystis around 2 mm, without eyes and with a small proboscis, 1/8 of the body length. The prostate stylet is 25 µm long, 14 µm at its base. It narrows to 5 µm and broadens to about 11 µm at the end. The accessory stylet is 49 µm long with a funnel-like proximal end; the opening is 11 µm wide and the stylet narrows quickly to 4 µm and ends at less than 1 µm. The distal half of the accessory stylet makes a circular turn of 180°. The proximal ring is about 18 µm in diameter. The seminal receptacle consists of two successive vesicles.

Occurrence. Panama: Isla Pedro Gonzalez (Las Perlas), coarse sand from near to a mangrove, 2.5 m deep at medium level tide (8°23'14.57"N, 79° 5'1.73”W) (by Artois, December 12, 2011) (Type Locality) .

Material examined. Observations and micrographs of the living animal. One whole mount designated the holotype (USNM nr 1523610).

Etymology. Species name in honour of Dr. J. Norenburg (Smithsonian Institution), who organised the sampling campaign in Panama in 2011.

Figures

FIGURE 6. Typhlopolycystis norenburgi n. sp. (A, B) Drawing and micrograph of the living animal. (C) Micrograph of the caudal end of the living animal – inset: the seminal receptacle in the whole mount. (D) The copulatory organ in the holotype. (scale = 20 µm except in B and C)