| Summary: | Echinorhynchus brayi n. sp. (Palaeacanthocephala: Echinorhynchidae) is described from Pachycara crassiceps (Roule) (Zoarcidae) from the Porcupine Seabight, Northeast Atlantic. The new species closely resembles E. canyonensis Huffman & Kliever, 1977, a parasite of a Pacific zoarcid, but has longer lemnisci, larger eggs and larger testes. E. brayi n. sp. can be readily differentiated from the ten other Echinorhynchus spp. recorded from deep-sea fishes (E. abyssicola, E. gadi, E. longiproboscis, E. malacocephali, E. melanoglaeae, E. muraenolepisi, E. petrotschenkoi, E. sebastolobi, E. trachyrinci and E. truttae), because it has fewer hooks per longitudinal row. Standard morphometric and meristic data from females Morphometric and meristic data from the 25 female specimens of the type-material of Echinorhynchus brayi Wayland, Sommerville & Gibson, 1999 (Acanthocephala: Echinorhynchidae). Echinorhynchus_brayi_female_meristics_morphometrics.csv Standard morphometric and meristic data from males Morphometric and meristic data from the 14 male specimens of the type-material of Echinorhynchus brayi Wayland, Sommerville & Gibson, 1999 (Acanthocephala: Echinorhynchidae). Specimens include holotype. Echinorhynchus_brayi_male_meristics_morphometrics.csv Hook measurement data from females Hook measurements from 6 female specimens of the type-material of Echinorhynchus brayi Wayland, Sommerville & Gibson, 1999 (Acanthocephala: Echinorhynchidae). Echinorhynchus_brayi_female_hook_measurements.csv Hook measurement data from males Hook measurements from 7 male specimens of the type-material of Echinorhynchus brayi Wayland, Sommerville & Gibson, 1999 (Acanthocephala: Echinorhynchidae). Specimens include holotype. Echinorhynchus_brayi_male_hook_measurements.csv
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