Diplocirrus stopbowitzi Darbyshire & Mackie, 2009

Salazar-Vallejo, Sergio I. & Buzhinskaja, Galina, 2011, Revision of Diplocirrus Haase, 1915, including Bradiella Rullier, 1965, and Diversibranchius Buzhinskaja, 1993 (Polychaeta, Flabelligeridae), ZooKeys 106, pp. 1-45 : 34-35

Diplocirrus stopbowitzi Darbyshire & Mackie, 2009 Fig. 12

Diplocirrus stopbowitzi Darbyshire and Mackie 2009:93-96, Figs. 1-3A, Table 1.

Material examined.

One specimen, broken in three pieces, Stat. BSA 449, 12 mm long, 0.8 mm wide, 25 chaetigers, A. Ravara, coll. (no further data available).

Diagnosis.

Body slightly swollen anteriorly (Fig. 12A). Papillae abundant, short, giving a velvety oultlook, without sediment particles (Fig. 12B). Median chaetigers with 5-6 notochaetae and 2-3 neurochaetae; posterior chaetigers with three notochaetae and two neurochaetae. Notochaetae with long articles throughout the chaeta (Fig. 12C). Neurochaetae with long articles, being 7-8 times longer than wide, tips falcate (Fig. 12D).

Remarks.

As stated above, Diplocirrus stopbowitzi Darbyshire & Mackie, 2009 resembles Diplocirrus kudenovi sp. n. because in both species the body has hemispherical papillae, but lacks sand particles or ventrolateral gonopores. They especially differ regarding some neurochaetal features in median chaetigers such as their number and the relative length of articles; thus, Diplocirrus stopbowitzi has 2-3 neurochaetae, each with long articles being about seven times longer than wide, whereas Diplocirrus kudenovi has 5-6 neurochaetae and each has shorter articles, each being twice as long as wide.

Distribution.

Southern Irish Sea, offshore, in gravel or gravelly-sand bottoms, 38-112 m depth.