Simplisetia Hartmann-Schröder, 1985

Bonyadi-Naeini, Alieh, Rastegar-Pouyani, Nasrullah, Rastegar-Pouyani, Eskandar, Glasby, Christopher J. & Rahimian, Hassan, 2017, Nereididae (Annelida: Phyllodocida) of the Persian Gulf and Gulf of Oman, including description of two new species and 11 new records, Zootaxa 4244 (1), pp. 91-117: 106

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Simplisetia Hartmann-Schröder, 1985


Simplisetia Hartmann-Schröder, 1985 

Diagnosis (after Bakken & Wilson 2005): Prostomium with entire anterior margin, one pair of antennae, one pair of biarticulated palps with conical palpostyles, four pairs of tentacular cirri with distinct cirrophores. Two pairs of eyes. Maxillary ring of pharynx, with conical paragnaths: Area I, present or absent; II, present; III, present or absent; IV present. Oral ring, paragnaths absent. Dorsal notopodial ligule markedly reduced on posterior chaetigers. Prechaetal notopodial lobe present or absent, smaller than dorsal notopodial ligule on anterior chaetigers, usually reduced or absent posteriorly. Acicular process present or absent. Dorsal cirrus basally attached to dorsal notopodial ligule on posterior chaetigers, lacking basal cirrophore. Neuropodia with postchaetal lobe absent, (or present at least on some anterior chaetigers), acicular ligule and ventral ligule. Notoaciculae absent from chaetigers 1 and 2. Notochaetae: homogomph spinigers. Neurochaetae, dorsal fascicle: heterogomph spinigers present or (absent only in S. lizardensis  ), homogomph spinigers and heterogomph falcigers present, fused falcigers present. Neurochaetae, ventral fascicle: heterogomph spinigers present, heterogomph falcigers with long blades of anterior chaetigers present, with long or short blades of posterior chaetigers present or absent.