Schizorhynchia (Platyhelminthes, Rhabdocoela) from eastern Cuba, with the description of fifteen new species Author Diez, Yander L. Author Reygel, Patrick Author Artois, Tom text Zootaxa 2019 2019-07-23 4646 1 1 30 journal article 26156 10.11646/zootaxa.4646.1.1 1317c2b5-b6cc-4603-947f-170fa4068fb9 1175-5326 3346255 2A39D2E1-262F-423F-9B7F-89C376912FFC Schizochilus espinosai sp. n. ( Fig. 12 A–B, 15E) http://zoobank.org/ urn:lsid:zoobank.org:act: 2CF67117-9665-4779-96D4-2B0A4272D392 FIGURE 12. Schizochilus espinosai sp. n. . A, body from the live animal. B, cirrus and stylet. Schizochilus atlanticus sp. n. . C–D, cirrus and stylet. Schizochilus bueycabonensis sp. n. . E–F, stylet. Schizochilus banesensis , sp. n. . G, cirrus and stylet. Schizochilus maximus sp. n. . H, cirrus and stylet. B–H, from whole mounts. B–C, F–H, from the holotype. D, E, from a Reference specimen (HU X.1.22). Material. One specimen studied alive and whole mounted, designated holotype ( FMNH https://id.luomus.fi/ KV.617), collected in Bueycabón (type locality) ( February 21, 2018 ), sublittoral, fine-grained sand with organic matter, 0.5 m depth, salinity 33 ‰. Etymology. Species dedicated to Prof. Em. Dr. José Espinosa Sáez (Instituto de Ciencias del Mar, La Habana , Cuba ), specialist in ecology and taxonomy of molluscs, and awarded with the National Award of Marine Sciences of Cuba (2018). Diagnosis. Species of Schizochilus with a spiny cirrus 71 μm long; spines talon-shaped, about 3 μm long. A 52-μm-long, needle-shaped stylet runs centrally through the cirrus. Copulatory bulb distally forming a 12-μm-long cap. Description. Animal 0.9 mm long, measured on the whole mount, translucent, without eyes. Proboscis lips ( Fig. 12A : pr) 77–92 μm long ( x = 85 μm; n = 2), with a pair of caudal glands. Pharynx ( Fig. 12A : ph) 72 μm in diameter, located at 70%. Four testes ( Fig. 12A : t) lie in a row rostrally from the pharynx, fused two by two into two pairs. Copulatory bulb ( Fig. 12A : cb, 15E) 77 μm long, comprising the prostate vesicle and the spiny cirrus. The cirrus is 71 μm long and 6 μm wide, measured over its midlength. The spines are talon-shaped and about 2–3 μm long ( x = 3 μm; n = 2). A 52-µm-long stylet ( Fig. 12B ) runs centrally through the cirrus. It is 6 μm wide proximally, needle shaped, and tapers to a distal sharp point. The copulatory bulb forms a distal sclerotized cap of 12 μm long and 9 μm wide at the widest point. As such, it surrounds the cirrus for 23% of the latter’s length. The common gonopore ( Fig. 12A : cg) opens at 90%. A pair of vitellaria ( Fig. 12A : vi) extend between the brain ( Fig. 12A : br) and the copulatory bulb, one vitellarium at each side of the body. A bursa ( Fig. 12A : b) and ovary ( Fig. 12A : ov) are located in the caudal body end. The uterus ( Fig. 12A : ut) is directed forwards, situated beside the copulatory bulb.