Eunice flavocuprea Grube 1869

Eunice flavocuprea Grube, 1869

Eunice flavocuprea Grube, 1869:493–494.

MATERIAL EXAMINED.—Holotype, ZMB 498, Tor, Red Sea, coll. Ehrenberg.

COMMENTS ON MATERIAL EXAMINED.—The holotype is in rather poor condition; it appears to have been in posterior regeneration.

DESCRIPTION.—Holotype complete with 100 setigers; total length 17 mm; maximal width 1 mm; length through setiger 10 about 2 mm.

Prostomium (Figure 47c) distinctly shorter and narrower than peristomium, less than as deep as peristomium. Prostomial lobes frontally obliquely truncate, dorsally flattened; median sulcus shallow. Eyes not observed. Antennae in shallow horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform, with 2 or 3 long, cylindrical articulations. A-I to setiger 1; A-II to setiger 3; A-III missing. Peristomium cylindrical. Separation between rings distinct on all sides; anterior ring ~ of total peristomial length. Peristomial cirri very short, nearly ovoid, without articulations.

Jaws not examined.

Branchiae present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 4 to setiger 34. Branchiae terminating well before posterior end. First 5 and last 10 branchiae single filaments; maximum 4 filaments at about setiger 15. All branchiae outreaching notopodial cirri, even in first branchiated segment. Branchial stems reduced. Filaments very long, slender.

Shape of neuropodia indeterminable in detail without destroying specimen. Ventral cirri basally inflated from about setiger 5 through setiger 40. Inflated bases ovate; narrow tips short and button-shaped. Notopodial cirri distinctly medially inflated anteriorly, becoming digitiform in posterior setigers, articulations absent.

Limbate setae marginally serrated. Pectinate setae not observed in detail. Shafts of compound falcigers distinctly inflated, marginally smooth. Appendages (Figure 47a) very long and narrow, bidentate. Proximal teeth very short, triangular projections, directed basally. Distal teeth longer than proximal teeth, slender, curved. Guards symmetrically rounded; some guards with distinct, narrow mucros. Pseudocompound falcigers and compound spinigers absent. Aciculae tapering, yellow. Separation between core and sheath indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 47b) yellow, tridentate. Hooks first present from setiger 17, present in all setigers thereafter, sometimes paired. Main fangs large, curved; 2 distal fangs in crests; very small tertiary fangs closely appended to secondary fangs.

UNKNOWN MORPHOLOGICAL FEATURES.—Jaw structure; most parapodial features; pygidium and anal cirri.

EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—Mx III long, located behind left Mx II.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 56. Unknown Characters: 1,4, 6, 13, 14, 38, 43–50, 52, 57–60, 65–68.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—38,2.