Cheliplana subproximalis Diez, Reygel & Artois, 2019 Material examined. None. Known distribution. Bueycabón and Las Sardinas, Cuba (Diez et al. 2019). Remarks (summarised from literature). Live specimens are pinkish, translucent and rather small: The body length is 0.4–0.7 mm, as measured on whole mounts. The proboscis is armed with 13–18-µm-long, curved hooks. The muscular hook supports measure 5–8 µm. The pharynx measures 1/7 to 1/8 of the total body length in live specimens. The spiny prepharyngeal cavity is elongated, measuring twice as long as the pharynx. The mouth opens antero-ventrally and subterminally. The single testis lies postero-laterally to the pharynx and connects to paired seminal vesicles. Distally, the two seminal vesicles fuse into a short, seminal duct, which opens into the copulatory bulb. Two proximal ducts of unknown origin enter the prostate vesicle near the entrance of the seminal duct. The 62–66-µm-long cirrus is armed with fine spines. Distally, the cirrus is slightly widened and surrounded by an asymmetric sclerotised cap (10–20 µm x 6–10 µm). Cirrus spines measure 2–3 µm in this region. The vitellarium extends from the pharynx to the copulatory bulb. A single, kidney-shaped ovary is present. Oocytes occur in a row and proximally decrease in diameter. The bursa lies caudally from the common gonopore.

Published as part of 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, pp. 453-494 in Zootaxa 4970 (3) on pages 482-483, DOI: 10.11646/zootaxa.4970.3.2, http://zenodo.org/record/4766692