Orostylis caecus, sp. nov
| Autor: | GOBERT, STEFAN, ARMONIES, WERNER, DIEZ, YANDER L., JOUK, PHILIPPE, MONNENS, MARLIES, REVIS, NATHALIE, REYGEL, PATRICK, SMITH, JULIAN III, STEENKISTE, NIELS VAN, ARTOIS, TOM |
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| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.5281/zenodo.6346929 |
| Popis: | Orostylis caecus sp. nov. Diez & Artois (Figs. 3D, 4B) Localities. Bah��a Larga, Guam�� municipality, Santiago de Cuba province, Cuba (19��58���57���N; 76��18���15���W) Intertidal, very fine sand in the upper 10 cm of the sediment, salinity 34��� (Apr. 5, 2017): Type locality. Bah��a de Gibara, Holgu��n province, Cuba (21��06���00���N; 76��08���09���W) Intertidal, on very fine sand with organic material close to the mouth of the river, salinity 32 ��� (Feb. 17, 2016). Material. Observations on four live specimens, three of which were whole mounted afterwards, one designated holotype (FMNH KV.692), the others deposited in the HU XIV.3.07��� XIV.3.08. Etymology. The specific name refers to the species��� lack of eye spots (Lat. ���caecus��� = blind). Description. General morphology as described for the species above, with the stylet located anteriorly, lateral to the pharynx (Fig. 4B: ph, st). The body is unpigmented, slender, and 0.25���0.42 mm long (measured on two whole-mounted specimens). Eye spots are lacking. The mouth opens subterminally and is surrounded by few tactile hairs. The pharynx (Fig. 4B: ph) is 1/6���1/3 of the body length in live animals, measuring 104���120 ��m in two whole mounts and bearing six slender tentacles anteriorly (Fig. 4B: pht). The paired testes are located at both sides of the pharynx, each one connected to a seminal vesicle. The two seminal vesicles enter a small prostate vesicle. The stylet (Figs. 3D; 4B: st) is formed by a broad, proximal piece (Fig. 3D: bp) and a distal, small, hollow hook (Fig. 3D: h). The entire stylet is 24���31 ��m long (x = 29 ��m; n = 3) and 14���20 ��m wide (x = 16 ��m; n = 3). The hook is 8���15 ��m long (x = 11 ��m; n = 3) and 3���5 ��m wide at its base (x = 4 ��m; n = 3). The broad piece is partially filled by a granular secretion, either originating from the prostate vesicle or part of the prostate vesicle itself. A single ovary (Fig.4B: ov) is situated in the midbody and is surrounded by the gut. Published as part of GOBERT, STEFAN, ARMONIES, WERNER, DIEZ, YANDER L., JOUK, PHILIPPE, MONNENS, MARLIES, REVIS, NATHALIE, REYGEL, PATRICK, SMITH, JULIAN III, STEENKISTE, NIELS VAN & ARTOIS, TOM, 2022, Orostylis gen. nov., a new genus of Dalytyphloplanida with seven new species (Platyhelminthes: Rhabdocoela), pp. 29-46 in Zootaxa 5115 (1) on page 34, DOI: 10.11646/zootaxa.5115.1.2, http://zenodo.org/record/6346911 |
| Databáze: | OpenAIRE |
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