Drilonereis sp. 1
Voucher specimen. SEA LION: station 38MFC.
Diagnosis. Long slender specimen 33mm long and about 1mm wide for around 170 chaetigers. Prostomium flattened with mid-dorsal furrow or depression, long, triangular, distally rounded. No eyes. Posterior chaetigers maldanid-like with a collar and distinct proximal edge. Parapodia well developed throughout, including in anterior chaetigers. Chaetae simple limbate and large protruding, yellow aciculae. Jaws not observed.
Remarks. The well-developed parapodia of the anterior end affiliated this specimen with Drilonereis sp. reported by Orensanz (1990). This character also distinguishes the specimen from D. tenuis, in which the parapodia of anterior end are very small and which was also found to be present in Falkland Islands (see entry Drilonereis tenuis). Other species known from the wider region (off Chile) include D. chilensis Hartmann-Schröder, 1965 and D. viborita Orensanz, 1990. Orensanz (1990) suggested that several undescribed species may be present in the region, with Drilonereis sp. 1 likely representing one of them.