Pareurythoe paulayi Salazar-Vallejo and Jimi, 2025

Pareurythoe paulayi Salazar-Vallejo and Jimi sp. n.

( Figure 11 View Figure 11 )

urn:lsid:zoobank.org:act:

Type material. French Polynesia. Holotype ( UF 3268 ), Gambier Islands , Aukena Island, lagoon ( 23.13°S, 134.90°W), 21 m, 1 February 2013, J. Moore, coll. GoogleMaps

Additional material. French Polynesia. One specimen ( UF 1528 ), Society Islands , Moorea Island, SE of island, near Maatea, just off road ( 17.57°S, 149.80°W), sand flat with small rocks and fringing GoogleMaps

0–3 m, 11 November 2009, S. McPherson, T. Lotufo and N. Gravier-Bonnet, coll. (juvenile, markedly ventrally, regenerating posterior region, not measured to avoid further damage; caruncle tapered, anterior region of chaetiger 4, caruncular furrow shallow; branchiae from chaetiger 2 with 4 continued to last chaetiger).

One specimen ( UF 1973 ) . Society Islands , Moorea Island, Papetoai ( 17.49°S, 149.88°W), 0.3 sandflat with coral bommies, 28 October 2010, C GoogleMaps . Watson, coll GoogleMaps . (twisted juvenile, not measured to

(E) Same, neurochaetae (insets: furcate capillary and tip of furcate chaetae on the left, tip of neuracicula). (F) Chaetiger right parapodium, posterior view (inset: furcate capillary). Scale bars: A = 0.9 mm; B, C, F = 0.2 mm; D, E = 120 µm (work).

Diagnosis

Pareurythoe with caruncle extended along chaetigers 1–3; caruncular furrow shallow. Anterior eyes anterior and posterior eyes of similar size. Branchiae from chaetiger 2 with 4 filaments. Median with neurochaetae furcate.

Description

Holotype (UF 3268) complete, pink, slightly sinuous ( Figure 11 View Figure 11 (A)); right parapodia of chaetigers 15,

29 removed for observation (kept in container); body 19 mm long, 2 mm wide, 37 chaetigers.

Anterior region tapered, blunt, prostomium round ( Figure 11 View Figure 11 (B)), margin barely notched; anterior with lateral antennae tapered, directed laterally; posterior lobe with median antenna and eyes, antenna tapered, about 1/6 as long as caruncle, slightly shorter than laterals; eyes brown, anterior slightly larger than posterior ones.

Caruncle sinuous, tapered, blunt, as long as first three chaetigers, reaching anterior area of caruncular furrow shallow. Pharynx not exposed.

JOURNAL OF NATURAL HISTORY

Parapodia biramous ( Figure 11 View Figure 11 (C,F)), dorsal and ventral cirri tapered; dorsal cirri markedly longer branchiae along body, 3–4 times as large as ventral cirri. Median segments with notopodia Neuropodia larger, lobate.

Chaetae slightly damaged by fixative. Notochaetae include long, abundant spurred capillaries smaller, wider harpoon and acicular chaetae ( Figure 11 View Figure 11 (D)); tips of notaciculae tapered. include a few (1–2) long furcate capillaries and furcate chaetae with longest tine smooth or barely ( Figure 11 View Figure 11 (E), inset left), tips of neuraciculae subdistally wider ( Figure 11 View Figure 11 (E), inset right). Posterior with similar abundance and type of chaetae, including a few furcate long capillaries ( Figure 11 View Figure 11 (F),

Posterior region tapered; pygidium truncate, anus terminal, anal plate globose, margin entire.

Etymology

The specific epithet is derived from Dr Gustav Paulay, Curator of Molluscs in the Florida Museum of History, University of Florida, Gainesville, in recognition of his sampling efforts in many different and for his long-term support of our research activities.

Remarks

Pareurythoe paulayi sp. n. resembles P. mooreae sp. n. Both differ from other species having branchiae chaetiger 2 because its caruncular furrow is very shallow. These two species differ from each other P. paulayi eyes are large, dorsal and ventral cirri are tapered, and neurochaetae are furcate, P. mooreae eyes are minute, dorsal and ventral cirri are filiform, and neurochaetae are spurred.

Distribution

French Polynesia, in subtidal mixed bottoms.