Oenone fulgida
Creators: name: Zanol, Joana
name: Ruta, Christine
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Eunicida
Oenonidae
Oenone
Oenone fulgida

description: Oenone fulgida (Savigny in Lamarck, 1818)
(Fig. 9)
Aglaura fulgida Savigny in Lamarck, 1818: 326. — Fauvel 1917: 240 –254. Aglaurides fulgida. — Hartman 1944: 185 –186.
Oenone fulgida. — Crossland 1924: 86 –92; Fauchald 1970: 143 –146.
Material examined. AM W.44456, MI QLD 2401 (1), fixed in formalin, few median chaetigers fixed in ethanol and RNA latter; AM W.44796, MI QLD 2424 (1), fixed in formalin.
Measurements. Table 2.
Description. Live specimens yellow to orange, anterior margin of peristomium pulled back exhibiting three antennae, a pair of nuchal organs, a pair of lateral large eyes, and a pair of small median eyes (Fig. 9 A, B). Specimens fixed in formalin dark brown to purple, fixed in ethanol yellow; anterior margin of peristomium covering eyes, antennae and nuchal organs, eyes faded (Fig. 9 C–E).
Body long, slender, evenly tapering towards anterior and posterior ends, median region widest; dorsoventrally rounded, dorsal side more convex than ventral, at least twice as deep as ventral side at posterior region.
Prostomium longer, about as wide and half as deep as peristomium, proximal end deeper than distal; anteriorly rounded, dorso-ventrally flattened; ventral median groove widening posteriorly, about as long as 3/4 of prostomium (Fig. 9 B–E). Three antennae digitiform covered by anterior edge of peristomium in fixed specimens, all about the same length, reaching posterior end of lateral eyes. Two lateral eyes round, appear to bear lens, larger than median eyes; 2–3 median eyes closer to each other than to lateral eyes (Fig. 9 B) and under antennae in fixed specimens (Fig. 9 D, E). Peristomium single ring, complete anterior edge (Fig. 9 C, D).
Mandible cutting plates diverging anteriorly and converging posteriorly, mandible carriers longer than cutting plates (Fig. 9 F). Maxillae dorsal carrier beginning of the furcula with lateral projections, wider than anterior end of carrier (Fig. 9 G); ventral carrier not observed. Maxillae with five pairs of plates, shape of plates asymmetrical (Fig. 9 G–K). Left MxI distally falcate. Right MxI shorter than left one, bearing teeth similar in size (Fig. 9 K). Anteriormost tooth of MxII, MxIII and MxIV fang shaped. In right MxII, two anteriormost teeth fang like placed side by side, most lateral one smaller and appears to be an independent plate under superficial observation. Maxillary formula: (1, 7 (6)) +10 (7), 7 (6) + 12 (11), 6 + 7 (6), 5 (4) + 5, 1 + 1.
Pre and post-chaetal lobe longer than chaetal lobe; pre- rounded; post- twice as long as pre-, tapering to round tip in anterior chaetiger becoming narrower towards posterior end (Fig. 9 L, M). Notopodial cirri flattened, leaf shape; anterior with wide proximal and distal ends and distinct cylindrical base; median and posterior with tapering ends and less distinct cylindrical bases; narrower towards posterior end (Fig. 9 L, M); longest at median chaetiger. Notopodial cirri increasingly longer than post-chaetal lobe towards posterior end.
Chaetae and aciculae decrease in number towards posterior end. Notoaciculae present, at least 3 in anterior and 2 in posterior notocirri. Neuroaciculae 4 to 2 present. Capillary present in supra and subacicular position; decrease in length from dorsal to ventral; anterior neuropodia with 8–14, median 6–7, posterior 5–6 aciculae (Fig. 9 L, M). Ventral bidentate subacicular hook starting at chaetiger 45, one to two per neuropodium; proximal teeth laterally directed (Fig. 9 N). In median neuropodia with two subacicular hooks, ventralmost may be mucronate (Fig. 9 M).
Two pairs of pygidial cirri digitiform placed laterally on pygidium; all the same length, as long as two posteriormost chaetigers (Fig. 9 O).
Variation. Both specimens have an unpaired eye posterior to one of the median eyes. It is posterior to the left median eye in the largest specimen and to the right one in the smallest specimen. One of the specimens analysed by Crossland (1924) also has a fifth eye, but its placement is not described.
Remarks. Oenone fulgida is currently considered a cosmopolitan species. It has been considered the senior synonym of the other ten species described for the genus or synonymized genera (Fauvel 1917). See remarks of the genus for additional information.
Habitat. Coral rubble, underneath stones and coral.
Distribution. Worldwide.
description: Published as part of Zanol, Joana & Ruta, Christine, 2015, New and previously known species of Oenonidae (Polychaeta: Annelida) from Lizard Island, Great Barrier Reef, Australia, pp. 745-772 in Zootaxa 4019 (1) on page 764, DOI: 10.11646/zootaxa.4019.1.26, http://zenodo.org/record/235654