Kudenovythoe rullieri ( Fauvel, 1953 ), 2025

Kudenovythoe rullieri ( Fauvel, 1953) comb. n.

( Figure 15 View Figure 15 )

Eurythoe rullieri Fauvel, 1953: 13–15 View in CoL , fig. 1.6; Fauvel and Rullier 1959 a: 155; Fauvel and Rullier 1959b: Amoureux 1973: 52.

Type material. Democratic Republic of Congo. Holotype ( IRSNB 309547 ) and one paratype 309548), Sta. 12 ( 05.93°S, 12.00°E), 37 km WNW off Point Banana, 34 m, 17–19 August 1948 ( GoogleMaps

a posterior fragment of a larger specimen; 27 mm long, 2.8 mm wide, 42 chaetigers, without branchiae paratype (IRSNB 309549), Sta. 20 ( 05.87°S, 12.00°E), 40 km WNW off Point Banana, 30 m, 25–26 August (body soft; right parapodia of chaetiger 20, and 34, and left parapodia of chaetiger 66 previously left parapodium of chaetige 31 removed for observation; pygidium damaged; 63 mm long, 4.5 mm chaetigers, last 35 without branchiae).

Additional material

São Tomé and Principe. One specimen ( MNHN A367 About MNHN ), RV Calypso, Campagne Golfe de Guinée , Sta . 90 ( 01.62°N, 07.37°E), 30 m, dredge, 26 June 1956 (anterior fragment, pale, bent ventrally; eyes anterior eyes about 2 times as large as posterior ones; lateral antennae and palps of similar length

Dahomey. One specimen ( MNHN A475 About MNHN ), Sta . 7 ( 06.22°N, 02.43°E), 17 m (after label, Sta. 117 in

1973), fine sand with traces of mud, 9 October 1963, A. Crosnier, coll. (anterior fragment, pale, bent pharynx fully exposed; right parapodia of chaetigers 19–20, and left parapodia of chaetigers 40– viously dissected (not in container); left parapodium of chaetiger 24 dissected for observation (container); eyes Black, anterior and posterior eyes of similar size; lateral antennae and palps of similar palps slightly wider; median antennae entire, 1/3–1/4 as long as caruncle; caruncle terete, reaching area of chaetiger 3; branchiae from chaetiger 3 to last segment of fragment; body 35 mm long, 4 mm 43 chaetigers).

Diagnosis

Kudenovythoe with ventral cirri of chaetiger 2 twice longer than following ones; spurred denticulate.

Description

Holotype (IRSNB 309547) complete, soft, apparently fixed in ethanol or in formalin after it decompose, pale, integument iridescent ( Figure 15 View Figure 15 (A)), swollen anteriorly, tapered along median posterior regions; left parapodium of chaetiger 27, and right parapodia of chaetigers 52 and 57 removed; body 56 mm long, 5 mm wide, 81 chaetigers (last 20 without branchiae).

Prostomium pale; anterior lobe with lateral antennae and palps, irregularly corrugated, antennae palps of similar size; posterior lobe slightly shorter than anterior one, with median antenna resembling ones, fixed towards posterior margin, about as long as posterior prostomial width. Eyes not seen.

Caruncle tapered posteriorly, mostly detached from body wall, reaching posterior margin of median ridge smooth, lateral lobes thin, slightly projected laterally ( Figure 15 View Figure 15 (B)).

First chaetiger with dorsal cirri about twice longer than ventral ones. Second chaetiger with dorsal ventral cirri of similar length, ventral cirri twice longer than following ventral cirri. Pharynx exposed, rugose.

Parapodia biramous; notopodia and neuropodia conical, collapsed in many parapodia and other mens ( Figure 15 View Figure 15 (D,E)), notopodia usually larger than neuropodia. Dorsal cirri usually longer than Branchiae pectinate, present from chaetiger 3 with about 10 filaments, larger with more filaments chaetigers 7–24, decreasing progressively, ending in chaetiger 61. Ventral cirri tapered, smaller than cirrus.

Most chaetae damaged. Notochaetae mostly smooth capillaries, some harpoon chaetae with distinct ( Figure 15 View Figure 15 (F)), denticles eroded in some chaetae; acicular chaetae barely swollen basally.

include spurred chaetae with longer tine denticulate along inner margin, aciculars distally denticulate denticulate ( Figure 15 View Figure 15 (G)) or smooth capillaries. Acicular chaetae slightly swollen distally.

Posterior region tapered; pygidium with anus terminal ( Figure 15 View Figure 15 (C)), one digitate, eccentric, anal

Variation

The holotype and the complete paratype (IRSNB 309548) have a swollen anterior region and tapered and posterior regions. Branchiae are present along anterior and median regions, extended ( paratype ISRNB 309549) to ¾ ( holotype) body length, leaving posterior region without branchiae paratype (309548) also had anus terminal with a single, digitate anal cirrus, whereas the other pygidium damaged.

Remarks

Kudenovythoe rullieri ( Fauvel, 1953) from Equatorial Western Africa differs from the two other species genus, as indicated in the key above, because it has ventral cirri of chaetiger 2 markedly larger than ones.

JOURNAL OF NATURAL HISTORY