Proceraea cornuta Agassiz 1862

• Main Author: Nygren, Arne
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Syllidae; Proceraea; Proceraea cornuta; Faroes
• Online Access: https://doi.org/10.5281/zenodo.6273178; http://treatment.plazi.org/id/03CDB626CC594E10FEE879ED8CDB84A5

Proceraea cornuta (Agassiz, 1862) (Fig. 9A–C) Autolytus cornutus Agassiz, 1862: 384 –403, pl. 9, fig. 1–20, pl. 10, fig. 1–15, pl. 11, fig. 1–10; Quatrefages 1866: 44 –46; Verrill 1881: 292, 300, 304, 308, 323, pl. 12, fig. 4, 6; Mensch 1900a; 1900b; 1900c; Potts 1911: 29 –30; Treadwell 1948: 30, fig. 16A–C; Korringa 1951: 77 –79, fig. 7A–D; Pettibone 1963: 144, fig. 37E; Okada 1933a: 645 –647, figs 3, 4. Autolytus fallax Malmgren, 1867: 33 –34, pl. 6, fig. 41; Pettibone 1954: 247 –249, fig. 29C–F. Myriana cirrata Treadwell, 1931: 2 –3, fig. 2A–C. Autolytus prismaticus Thorson 1946: 39 –40. Autolytus prolifer Dales 1952 (in part). Proceraea cornuta Gidholm 1965: 35; 1967: 205–206, figs 13E–F, 28A; Hamond 1967: 1 –4, fig. 2A–B; 1969c; Hartmann­Schröder 1971: 184, fig. 59A–D; Rasmussen 1973: 76, fig. 23; Hamond 1974; Gardiner 1976: 129; Kirkegaard 1992: 255 –257, fig. 126A–D; Hartmann­ Schröder 1996: 188, fig. 81A–D; Nygren & Sundberg 2003: GenBank sequences, 16S rDNA partial sequence AF474266, and 18S rDNA partial sequence AF474312. Autolytus (Regulatus) cornutus Imajima 1966: 49 –51, fig. 13A–I. Material examined . Sweden : 20 spms, Tjärnö archipelago, Inre Vattenholmen, 58°52'N 11°06'E, intertidal, algae with epifauna, Apr 2000. Faroes : 7 spms (2 spms in formalin, 2 spms on slides, 3 spms in author's collection for DNA analyses), outside Kaldbak marine laboratory, 62°N 06°W, dive, 1–4 m, Laminaria spp. with epifauna, 21 Jun 1997. Diagnosis . Proceraea with 2 indistinct longitudinal black lines along the sides. Description . Length in live specimens 4–10 mm for 30–50 chaetigers; width c. 0.3 mm. Live specimens yellowish with 2 indistinct black lines along the sides of body, sometimes with 2 very faint lines on dorsum. Preserved specimens without colour markings. Ciliation present on prostomium, nuchal epaulettes, and a few segments ventrally. Eyes separated (Fig. 9A); eye spots present. Palps in dorsal view projecting 1/4–1/3 of prostomial length (Fig. 9A), fused. Extension of nuchal epaulettes from half to ...