Eunicid worm 

Eunice antennata (Savigny, 1818)

View scientific description and taxonomy

Scientific Details

Family level description.
Eunicidae are common, widespread and diverse polychaetes characterised by having complex jaws of multiple pairs of maxillae and a pair of ventral mandibles; the anterior end has paired cushion-like structures (actually dorsal lips) and beaded prostomial appendages (antennae + palps) which may be 1, 3 or 5 in total number. Some have prominent comb-like gills on mid-body chaetigers. Dorsal chaetal bundles are absent; ventral bundles have capillaries, acicular hooks, compound hooks, and combs. These are robust, muscular, active, long-lived carnivores or scavengers found in a variety of habitats.

Species level technical description.
Prostomium bilobed, slightly to deeply notched, distinctly shorter than peristomium, distinctly narrower than peristomium, at least as deep as 1/2 of peristomium. Prostomial lobes frontally rounded, dorsally flattened, median sulcus deep. Eyes present, behind bases of palps. Maxillary formula: I = 1, + 1. II = 8, + 6. III= 8, + 0. IV = 11, + 8. V = 0, + 0. Number of prostomial appendages 5 - one median antenna and a pair of lateral antennae, plus a pair of palps (in lateral-most position). Prostomial appendages dissimilar in length. Median antenna longer than lateral antennae. Palps shorter than lateral antennae. Peristomial (tentacular) cirri present, reach middle or anterior end of peristomium, tapering, articulated. Branchiae present, pectinate, distinctly longer than notopodial cirri, reduced in mid-body region. Maximum number of branchial filaments 7, 0 anterior chaetigers with single branchial filaments, 3 posterior chaetigers with single branchial filaments, stems erect. Branchiae from chaetiger 7, last present chaetiger 92, present to near posterior end. Pectinate chaetae present, on anterior segments distally flat, distally flaring, pectinate chaetae on median and posterior segments distally flat, distally flaring. Compound (composite) falcigers present, Appendages of compound falcigers distally bidentate, Hoods of compound falcigers distally without mucros (rounded). Pseudocompound falcigers absent. Compound spinigers absent. Aciculae light yellow or translucent, acicular cores and sheaths indistinctly separated, rounded in cross-section, distally pointed (sharp or blunt). Subacicular hooks present, light yellow or translucent, cores and sheaths indistinctly separated, tridentate, with teeth in a crest, first present from chaetiger 25, present in all chaetigers thereafter, always single (except for replacements).



General Description

In members of this genus there are 5 prostomial appendages (antennae + palps) and one pair of tentacular cirri on the peristomial segment. Branchiae commence on chaetiger 5 and have a maximum of 15 filaments each. Maxilla II has 5-6 teeth. Recorded up to 15 cm long, probably grows longer.


Many records of this species from more distant locations are probably misidentifications of other species of Eunice.


Estuaries, embayments, continental shelf, sand, mud and weed beds, to depth of 80 m.


Soft substrates

Seagrass meadows

Distribution guide

Eastern Australia.

Species Group

Worms Eunicid worms


Shore (0-1 m)
Shallow (1-30 m)
Deep ( > 30 m)

Water Column

On or near sea floor

Max Size

15 cm



Commercial Species


Global Dispersal

Native to Australia

Species Code

MoV 4382


Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed


article author Wilson, R.

Robin Wilson is a Senior Curator of marine invertebrates at Museum Victoria.


Cite this page as:
Wilson, R., 2011, Eunicid worm, Eunice antennata, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 05 Aug 2020,

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