biostudies-literatureUnknown1118Zanol JA new giant species is described from New South Wales, Australia. <i>Eunicedharastii</i> <b>sp. nov.</b> differs from described Australian species and is most similar to <i>E.aphroditois</i> (Pallas, 1788), <i>E.flavopicta</i> Izuka, 1912, and <i>E.kinbergi</i> Ehlers, 1868. The unique combination of features that characterizes the new species is irregular articulated prostomial appendages; antennae reaching back beyond chaetiger 4; branchiae starting at chaetiger 10, initially button-shaped and distinctly longer than notopodial cirri where best developed; dorsal fleshy knobs on anterior chaetal lobes; notopodial cirri pendulous, abrupt tapering from inflated bases; bidentate compound falcigerous chaetae with both teeth directed laterally, distal tooth much shorter than proximal tooth in median and posterior chaetigers; and dark bidentate subacicular hooks starting at chaetiger 58, tapering to a small head with both teeth directed distally, and proximal tooth much larger than minute and spur-like distal tooth. This new species lives in sandy sediments in coastal waters 1-8 m deep. It is highly mobile and not easy to collect, which may explain why it was not described before.ZooKeys97-109https://www.ebi.ac.uk/biostudies/studies/S-EPMC9848632biostudies-literatureA new species of giant <i>Eunice</i> (Eunicidae, Polychaeta, Annelida) from the east coast of Australia.PMC9848632Hutchings PZanol JfalseA new species of giant <i>Eunice</i> (Eunicidae, Polychaeta, Annelida) from the east coast of Australia.A new giant species is described from New South Wales, Australia. <i>Eunicedharastii</i> <b>sp. nov.</b> differs from described Australian species and is most similar to <i>E.aphroditois</i> (Pallas, 1788), <i>E.flavopicta</i> Izuka, 1912, and <i>E.kinbergi</i> Ehlers, 1868. The unique combination of features that characterizes the new species is irregular articulated prostomial appendages; antennae reaching back beyond chaetiger 4; branchiae starting at chaetiger 10, initially button-shaped and distinctly longer than notopodial cirri where best developed; dorsal fleshy knobs on anterior chaetal lobes; notopodial cirri pendulous, abrupt tapering from inflated bases; bidentate compound falcigerous chaetae with both teeth directed laterally, distal tooth much shorter than proximal tooth in median and posterior chaetigers; and dark bidentate subacicular hooks starting at chaetiger 58, tapering to a small head with both teeth directed distally, and proximal tooth much larger than minute and spur-like distal tooth. This new species lives in sandy sediments in coastal waters 1-8 m deep. It is highly mobile and not easy to collect, which may explain why it was not described before.2022-01-01T00:00:00Z20222025-04-04T18:44:11.914Z2025-04-04T18:44:11.914ZS-EPMC98486323676180410.3897/zookeys.1118.86448