Pseudopolydora achaeta Radashevsky & Hsieh 2000

Intertidal to 5 m depth.

A moderate-sized gonochoristic Pseudopolydora species inhabiting mud tubes in soft bottoms. Dorsal, lateral and ventral transverse bands of black difuse pigment usually present on anterior segments. Prostomium incised or blunt anteriorly. Four black eyes present. Caruncle reaching end of segment 2. Median antenna present on caruncle. Segment 1 with short hairlike neurochaetae. Segment 5 not modified, with noto- and neuropodial lamellae; two kinds of major spines arranged in an almost straight vertical double row. Pygidium flaring disc with dorso-lateral processes. Glandular pouches from segment 1, largest and paired in segments 6 and 7.

West Pacific Ocean: Taiwanese coasts of East and South China seas, and Kinmen Islands (Taiwan Strait, close to mainland China).

Mud tubes in soft bottoms of brackish water environments, at shallow depths.