Pennella benzi Hogans, 2017, sp. nov.
Pennella benzi sp. nov. (Fig. 6) Host. Escolar (Lepidicybium flavobrunneum Smith, 1843) Type Locality. Holotype and paratype 1: Host caught in the northwest Atlantic (no specific locality) Paratype 2: Host caught off coastal North Carolina, northwest Atlantic Site of infestation. Embedded in deep mu...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2017
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| Online Access: | https://zenodo.org/record/6052495 https://doi.org/10.5281/zenodo.6052495 |
| Summary: | Pennella benzi sp. nov. (Fig. 6) Host. Escolar (Lepidicybium flavobrunneum Smith, 1843) Type Locality. Holotype and paratype 1: Host caught in the northwest Atlantic (no specific locality) Paratype 2: Host caught off coastal North Carolina, northwest Atlantic Site of infestation. Embedded in deep musculature, along base of dorsal fin Etymology. The species is named for Dr. George W. Benz, in honor of his contributions to the study of parasitic Copepoda Type material. Holotype: United States National Museum (USNM) 180162; Paratype 1: USNM 180163; Paratype 2: Fisheries and Oceans Canada, Atlantic Reference Center (ARC), ARC 29529 Description. Ovigerous female (Fig. 6 a, b): cephalothorax bulbous, spherical, apical end flattened, armed with numerous roughly spherical cephalothoracic papillae of various sizes (Fig. 6 d). Configuration of papillae unorganized and different between all three specimens. Three holdfast horns radiating from below cephalothorax: two lateral, and one shorter dorsal horn bifurcate at tip (Fig. 6 c, i). Thoracic neck tubular, elongate, posterior end enlarged to form anterior end of trunk. Trunk one-half length of entire parasite, cylindrical, with parallel sides. Trunk tapering abruptly at its posterior end to form the abdomen. Abdomen about one-half length of trunk, annulated, with rounded dorsal surface and flattened ventral surface. Abdominal plumes arising from ventral surface of abdomen in two rows; individual plume (24-28) sets arise from a single stem and then branch repeatedly to form a mass of digitiform plumules (Fig. 6 h). Number of plumules per set variable. Genital complex (Fig. 6 g) at posterior end of abdomen, exhibiting two small oviduct orifices on ventral surface. Egg strings paired, filiform, about 1.5x length of each parasite, eggs uniseriate. First antenna (Fig. 6 e), observed clearly on one specimen only (paratype 2), two- segmented. Apical armature of 9 setae of various lengths. Setae of middle portion shorter and more numerous. Second antenna (Fig. 6 f), distinctly ... |
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