Typhlopolycystis microphthalma, 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 : 86

Typhlopolycystis microphthalma n. sp Schockaert, Revis and Jouk.

( Fig. 3 )

Diagnosis. Species of Typhlopolycystis , 2 mm long with a proboscis of 1/6–1/5 of body length and very small eyes, with only 13–15 pigment granules each, and closer to each other than to the body rim. Prostate vesicle and accessory secretion vesicle well developed and with a large seminal vesicle. The prostate stylet is a short and straight gutter, thickened at its closed side and 30 µm long; the accessory stylet is a slightly curved, sharp ending tube of 78 µm, both sitting on a ring with a diameter of about 40 µm over its largest cross section.

Occurrence. France: Cerbère , Cap Peyrefitte, sandy bottom, coarse sand with shell debris and silt, 21 m deep 42°27’24.8”N, 3°10’19.7E (by Revis & Jouk, 16 July 2012) (Type Locality) .

Material studied. One animal studied alive, photographed and mounted (holotype SMNH nr 8915).

Etymology. The species epithet refers to the very small eyes.

Figures

FIGURE 3. Typhlopolycystis microphthalmus n. sp. (A) The atrial organs in the living animal. (B) The copulatory organ. (C) The seminal receptacle. (scale = 20 µm)