Parasaccogaster normae Cohen & Nielsen 1972

• Main Authors: Nielsen, Jørgen G., Schwarzhans, Werner, Cohen, Daniel M.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Actinopterygii; Ophidiiformes; Bythitidae; Parasaccogaster; Parasaccogaster normae; Nautilus; R/V Lance
• Online Access: https://zenodo.org/record/6175268; https://doi.org/10.5281/zenodo.6175268

Parasaccogaster normae (Cohen & Nielsen, 1972) Figs. 21, 22, 26, Tables 1, 2, 7 Saccogaster normae Cohen & Nielsen 1972: 463, figs. 1 and 6 (type locality: off northern Peru). Saccogaster normae: Cohen 1987: 1; Nielsen et al. 1999: 110. Material examined (6 specimens, 118–142 mm SL). Holotype: USNM 207356, female, 140 mm SL, off northern Peru, 4 ° 57 ’S, 81 ° 23 ’W, R/V Anton Bruun, cr. 16, st. 625 A, otter trawl, 118–133 m, 2 June 1966. Paratype: IM 421, male, 138 mm SL, off northern Peru, 5 °04’S, 80 ° 24 ’W, R/V Lance, st. 76, 150 m, 7 May 1969. Non-types: UCR 1555 - 5 (male, 102 mm SL), UCR 1555 - 8 (female, 128 mm SL) and UCR 2072 - 21 (female, 118 mm SL), Peninsula de Nicoya, Costa Rica, 9 ° 44 ’N, 85 ° 22 ’W, R/V Nautilus III, bottom trawl, 30 Oct. 1983. UCR 760 - 1, female, 142 mm SL, off Quepos, Puntarenos Prov., Costa Rica, 9 ° 24 ’ 50 ’’N, 85 ° 22 ’W, bottom trawl, 25 Mar. 1973. Diagnosis. Parasaccogaster normae differs from the other two species of the genus by the gill filaments on anterior arch being 4–5 times the length of the developed rakers and by the following combination of characters: A pair of very small, subdermal, closely set spines on frontal plate above and behind eyes, no spine on ethmoid; 2–3 developed rakers on anterior arch not much longer than spiny knobs; gill filaments on anterior arch 4–5 times length of developed rakers; palatines with 2–4 tooth rows; pectoral peduncle prolonged and adnate to body; precaudal vertebrae 14–16 and total vertebrae 54–56; fin rays in dorsal 83–87, caudal 12–13, anal 51–54 and pectoral 17–19. Similarity. Parasaccogaster normae is most similar to P. rhamphidognatha with hidden opercular spine, nasal chamber not black and distinctly more anal fin rays and vertebrae than found in S. melanomycter. Parasaccogaster normae differs from P. rhamphidognatha by the longer gill filaments on anterior arch (4–5 times length of long rakers vs. 1–3 times), more pectoral fin rays (17–19 vs. 12) and lack of an ethmoidal spine vs. spine present. Description. ...