Nicidion amoureuxi (Rullier 1974)

Eunice amoureuxi Rullier, 1974

Eunice amoureuxi Rullier, 1974:45–47, fig. 3a–k.

MATERIAL EXAMINED.—The original material of this species is not present in the collections in Paris or Angers. The material was collected by Bacescu and Gomoiu in Cuba in 1969. Requests for information about the material sent to Roumania, where the type was deposited (Rullier, 1974:47) went unanswered.

This species was originally described from Bahia de Habana, Cuba, in 15 m depth. The following summary of the original description reports all that is known about this species.

DESCRIPTION.—Complete specimen 13 mm long; number of setigers not mentioned.

Prostomium frontally rounded. Eyes present. Antennae evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform, without articulations. A-II and III similar and A-I shorter; none reaching beyond anterior peristomial ring. Peristomial cirri to posterior end of anterior peristomial ring, without articulations.

The apparent maxillary formula 1+1, 5+5, ?5+0, and ?+4 and 1+1.

Branchiae present, single filaments, distinctly longer than notopodial cirri, not reduced in mid-body region. Branchiae from setiger 9 to setiger 24. Branchiae terminating well before posterior end.

Pectinate setae with one marginal tooth heavier than other teeth, with ~10 teeth. Shafts of compound hooks inflated, marginally serrated. Appendages short, tapering, with very large heads, bidentate. Both teeth of about same size, sharply pointed. Distal teeth distinctly curved. Guards symmetrically rounded, marginally serrated. Pseudocompound falcigers and compound spinigers absent. Aciculae dark-colored, tapering, straight. Subacicular hooks from setiger 17, dark-colored, bidentate. Hooks strongly curved. Proximal teeth slightly larger than distal teeth, directed laterally. Distal teeth slender, nearly erect.

UNKNOWN MORPHOLOGICAL FEATURES.—Many features unknown.

EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—Species too poorly known to make meaningful predictions.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 22. Unknown Characters: 1, 3–6, 7–12, 15, 24–26, 28, 34, 38–68, 74, 75, 78, 81, 82.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—None.

MATERIAL EXAMINED.—No specimens are available. The following description is summarized, with updated terminology, from Roule's description.

DESCRIPTION.—Complete specimens with 140–150 segments; length 180–200 mm; width 7–10 mm.

Prostomium distinctly shorter and distinctly narrower than peristomium. Peristomial lobes frontally truncate, dorsally apparently flattened; median sulcus deep. Eyes absent. Antennae apparently in straight line, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles tapering, irregularly articulated. All antennae similar in length; none reaching beyond peristomium. Peristomium massive, cylindrical. Separation between rings distinct on all sides or perhaps interrupted for short distance laterally; anterior ring ~ of total peristomial length. Peristomial cirri to anterior edge of peristomium, tapering, slender, without articulations.

Apparent maxillary formula 1+1. 5+5, ?8+0, ?+5, 1+1. Illustration confused; number of teeth of Mx III and IV and shape of maxillae cannot be determined from description or illustration.

Branchiae present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 4 to setigers 140–150, decreasing drastically in size and complexity in posterior of body. Branchiae present to near posterior end, in more than 65% of total number of setigers. Maximally 7 filaments present. Stems tapering, longer than filaments. Filaments digitiform, shorter than notopodial cirri.

Median acicular lobes distally rounded to triangular or conical with aciculae emerging at midline. Pre- and postsetal lobes low, transverse folds. Ventral cirri tapering, thick. Notopodial cirri long, slender, tapering, without articulations. Shafts of compound hooks inflated. Appendages short, tapering, with large heads, bidentate. Proximal teeth triangular, directed laterally. Distal teeth smaller than proximal teeth, nearly erect. Guards symmetrically sharply pointed, mucronate. Pseudocompound falcigers and compound spinigers absent. Aciculae paired, black. Subacicular hooks presumably black and bidentate.

UNKNOWN MORPHOLOGICAL FEATURES.—Many features unknown.

EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—Species too poorly known to make meaningful predictions.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 14. Unknown Characters: 4–6, 12, 16, 39, 40, 42, 53–60, 65–68, 74, 75, 78, 80–82.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—None.