Cheliplana barringtonensis Noldt & Hoxhold, 1984

Gobert, Stefan, Diez, Yander L., Monnens, Marlies, Reygel, Patrick, Van Steenkiste, Niels W. L., Leander, Brian S. & Artois, Tom, 2021, A revision of the genus Cheliplana de Beauchamp, 1927 (Rhabdocoela: Schizorhynchia), with the description of six new species, Zootaxa 4970 (3), pp. 453-494 : 465

Cheliplana barringtonensis Noldt & Hoxhold, 1984

Material examined. Reference material. 9 serially sectioned specimens from the Galápagos, including the holotype (P1841–P1849).

Known distribution. Galápagos archipelago, Ecuador ( Noldt & Hoxhold 1984).

Remarks. Our observations and measurements correspond to the species description by Noldt & Hoxhold (1984).

Specimens are up to 1.3 mm long. The proboscis has an overall length of 40–50 μm and is armed with 17–25- µm-long, curved hooks. Proboscis hooks have a 4–5-μm-wide, funnel-shaped base. Hook supports are 25 to 30 μm long. The soft proboscis sidepieces have an overall length of 24–29 μm and bear a 9-µm-long, sclerotised bristle. The epithelium lining the oral cavity is armed with 10-µm-long, sclerotised spines. A single testis is located alongside the pharynx. The prostatic glands with eosinophilic secretion and paired seminal vesicles surrounded by longitudinal muscles proximally enter the male copulatory bulb. The ejaculatory duct widens distally to form a sclerotised cirrus. The cirrus measures 20 to 25 μm and is armed with 2–3-µm-long spines. The distal part of the cirrus lacks spines and is partially everted to form a sclerotised papilla protruding into the common genital atrium. A short vagina externa opens posterior to the common genital pore and leads to a large, sac-like bursa. A tubular spermatic duct connects the bursa to the ovary.