Derogenes undetermined

• Main Authors: Bouguerche, Chahinez, Huston, Daniel C., Karlsbakk, Egil, Ahmed, Mohammed, Holovachov, Oleksandr
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Platyhelminthes; Trematoda; Plagiorchiida; Derogenidae; Derogenes; Derogenes undetermined; Arctic; Northeast Atlantic; Northwest Atlantic
• Online Access: https://doi.org/10.5281/zenodo.12751465; http://treatment.plazi.org/id/3A3487B2553AFFE4FC88F9B6FE1DF79B

Derogenes sp. (unpublished Derogenes limula of Looss, see discussion) (Figs. 2–4) Host : Parablennius tentacularis (Blenniiformes: Blenniidae), tentacled blenny. Locality : Trieste, Italy, Central Mediterranean [25]. Site in host : Intestine. Material examined : One specimen from Parablennius tentacularis off Trieste, Italy (SMNH-208361), from the collection of A. Looss in the Invertebrates collection of the Swedish Museum of Natural History (SMNH), Stockholm, Sweden (identified and labeled by A. Looss as Derogenes sp.). One specimen from P. tentacularis off Trieste, Italy (SMNH-222309), stained from the wet collection of A. Looss (894) at freshwater species. Abbreviations: NEA, Northeast Atlantic. NWA, Northwest Atlantic. 8 C. Bouguerche et al.: Parasite 2024, 31 , 26 measurements from the redescription of Rudolphi’ s specimen by Lühe (1901) as the original description did not provide any measurements. 2 Ratio given by Brinkmann (1967). For the 6th Mediterranean species D. bonnieri (Monticelli, 1893) from Eutrigla gurnardus off Wimereux, France [44], only body length (1500–2000) was given. Abbreviations: CM, Central Mediterranean. WM, Western Mediterranean. C. Bouguerche et al.: Parasite 2024, 31 , 26 9 Abbreviations: NWP, Northwest Pacific; N., number of specimens. 10 C. Bouguerche et al.: Parasite 2024, 31 , 26 Description : Measurements in Table 6. Body stocky, rounded anteriorly, pointed posteriorly (Figs. 4A, 4C, 4D), visibly larger at level of ventral sucker (Figs. 4C–4D). Tegument crenulate, with fine spines (Fig. 4B). Oral sucker elongate, oval. Pharynx muscular, subglobular (Figs. 4A, 4C, 4D). Oesophagus short, caecal bifurcation at level of pharynx. Drüsenmagen absent (Fig. 4D). Caeca broad, extending to posterior region of hindbody, as far as uterus (Fig. 4B). Ventral sucker round to transversely oval, voluminous (Figs. 4A, 4C, 4D), larger than oral sucker. Testes paired, oval, small, in hindbody, immediately posterior to ventral sucker (Fig. 4A). Ovary oval, voluminous, located between tested to ...