Eunice parasegregata Hartmann-Schröder 1965

Eunice parasegregata Hartmann-Schröder, 1965

Eunice parasegregata Hartmann-Schröder, 1965b:168–172, figs. 140–144.

MATERIAL EXAMINED.—Holotype, ZMH P-14273, off Punta Lavapie, Chile, 37°08.7′;S, 73°38.6′W, 58 m, fine sand with rocks and dead algae, dredge and grab, 10 Mar 1960, coll. Exp. Mar. Chile I.

COMMENTS ON MATERIAL EXAMINED.—The holotype is currently in three pieces: an anterior end of 33 setiger, a median piece of 10 branchiated setigers, and a mid-posterior abranchiate piece of 22 setiger. A number of segments are missing between both the anterior end and the short median fragment and between the latter and the medioposterior fragment, but exactly how many segments are missing cannot currently be estimated.

DESCRIPTION.—Anterior end with 33 setigers; length 22 mm; maximal width 3 mm; length through setiger 10, 8 mm.

Prostomium (Figure 83g) distinctly shorter and narrower than peristomium, as deep as of the peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus shallow. Eyes under peristomial fold, posterior to bases of A-I, brown. Antennae in a horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles slender and tapering; A-I with 3–4 drop-shaped articulations; A-II and A-III with 5 to 6 irregular, cylindrical articulations; all articulations on distal half of ceratostyles. A-I to posterior peristomial ring; A-II to setiger 5; A-III to setiger 6. Peristomium cylindrical. Separation between distinct on all sides; anterior ring twice as long as posterior ring. Peristomial cirri to middle of prostomium, slender and digitiform, without articulations.

Maxillary formula 1+1, 14+16, 13+0, 10+16, and 1+1. Mx III long, located behind left Mx II. Mx VI missing.

Branchiae (Figure 83n) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 3 to end of fragment, present on all setigers of median fragment, missing on medioposterior fragment. Branchiae terminating well before posterior end. All branchiae with 2 or more filaments; maximum 18 filaments at setiger 10; branchiae on median fragment with 2 to 3 filaments; those of last segments in anterior end with at least 7 filaments. All filaments slender, tapering, as long as notopodial cirri except in first branchial segment.

Anterior neuropodial acicular lobes distally obliquely truncate, becoming distinctly truncate in last segments present; aciculae emerging dorsal to midline. In medioposterior fragment acicular lobes reduced, equally supported by aciculae and subacicular hooks (Figure 83m). Anterior pre and postsetal lobes low, transverse folds. Posterior pre and postsetal lobes follow outline of acicular lobes closely. First 5 ventral cirri thick, tapering, becoming distinctly basally inflated in branchiated setigers. Inflated bases nearly spherical; narrow tips digitiform. Postbranchial ventral cirri slender and nearly digitiform. All notopodial cirri basally slightly inflated, tapering to slender tips, without articulations.

Limbate setae slender, marginally smooth. Pectinate setae (Figure 83i,l) tapering, flat. One marginal tooth much longer and heavier than other teeth, ~10 teeth present. Shafts of compound falcigers (Figure 83h,k) distally inflated, marginally serrated. Appendages triangular, bidentate. Proximal teeth smaller than distal teeth, triangular, directed laterally. Distal teeth gently curved. Guards distally asymmetrically bluntly pointed; mucros absent. Pseudocompound falcigers and compound spinigers absent. Aciculae yellow, distally tapering, gently curved; cross-section round. Separation between cores and sheaths indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 83j) yellow, bidentate. Hooks present on median and medioposterior fragments, present in all setigers, always single (except for replacements). Hooks tapering. Proximal teeth larger than distal teeth, directed laterally. Distal teeth very short, nearly erect.

UNKNOWN MORPHOLOGICAL FEATURES.—Parapodial and setal features of far posterior setigers; pygidium and anal cirri.

EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEATURES.—None.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 56, 58, 59. Unknown Characters: 1, 2, 4, 6, 36, 38, 40, 80.

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