Pectinaria nusalautensis (Pectinariidae, Annelida): a new polychaete species from Maluku, Indonesia

Pectinaria nusalautensis, new species, is described based on a single specimen collected from the intertidal sandy shore of Nusalaut Island, Maluku, Indonesia. This new species is distinguished from all other described species of Pectinaria by the presence of 12 pairs of golden stout notopodial paleae with faint transverse lines and blunt distal tips, one pair of ventral lappets on segment 1, one pair of dorsolateral flaps extending ventrally to ventral flaps and one mid-ventral triangular glandular area with faint longitudinal striations on segment 2, two pairs of dorsolateral pads on segments 3 and 4, one prominent mid-ventral trapezoidal glandular area with smooth surface flanked by two small antero-ventral lobes on segment 3, three large and broad antero-ventral lobes on segments 4–6, a strongly translucent abdominal region, golden flattened and bamboo-like notopodial capillaries with smooth margins and pointed tips, and a diamond-shaped scaphe with a triangular anal flap. Indonesian pectinariids appear to be rare especially in intertidal areas. Pectinaria nusalautensis, new species, is the seventh pectinariid species identified from the region. A key to all the pectinariid species occurring in the region is given.