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Small, spioniform polychaete of near-uniform width, holotype entire, 8.1mm long for 51 segments, maximum width 0.27mm (Fig. 2c). Most specimens are anterior fragments, with palps missing. Color in alcohol is pale yellow, without pigmentation (Fig. 2c). Prostomium rounded, slightly longer than wide, extending to the beginning of chaetiger 2 as a raised keel (Fig. 2b, 4a), without prostomial peaks, eyes or occipital tentacle. Nuchal organs indistinct. Palps, when not lost, grooved and extending to one-third body length (Fig. 2a).

Notopodial lamellae of chaetiger 2,3 enlarged, leaf-shaped and dorsally pointed, largest on chaetiger 3, shielding branchiae (Fig. 2b, 4a). Highly reduced in chaetiger 1, small and rounded in chaetiger 4 onwards, forming small dorsal crests from chaetiger 9 onwards (Fig. 4a). Neuropodial lamellae of chaetiger 1 reduced to a small lobe, rounded on chaetiger 2, rounded and dorsally projecting on chaetiger 3, thereafter small and rounded. First appearance of branchiae on chaetiger 3, and absent from all other chaetigers. Branchiae smooth, digiform, smaller than notopodial lamellae, often shielded and difficult to observe (Fig. 2b,c, 4a).

Chaetae of 3 types, capillaries, hooded hooks and sabre chaetae (Fig. 3). Anterior chaetae, to chaetiger 10, exclusively long capillaries. Granulated, thickened sabre chaetae present from chaetiger 10, multidentate hooded hooks from chaetiger 11 in the neuropodia and chaetiger 32 in notopodia (Fig. 3, 4b). Hooded hooks, under oil-immersion light microscopy, with 4 visible teeth above the main fang. Under electron microscopy, hood and shaft covered with fine denticles and a total of 13 teeth observed in 2 rows (Fig. 3c). Largest and following 2 teeth with rows fused, subsequently rows alternating with separation between teeth increasing (Fig. 3c).

Pygidium with one long medio-dorsal cirrus and two short lateral cirri (Fig. 2c).