Tanaidacea (Crustacea) of the Northeast Atlantic: non­filiform species of Anarthruridae Lang from the Atlantic Margin Author Bird, Graham text Zootaxa 2004 471 1 44 journal article 10.5281/zenodo.157876 b599bfa1-2dd5-4af3-9f06-39716463af6d 1175­5326 157876 6B9E9090-603A-4A51-8A07-84FC54F9FE17 Anarthrurella gen. nov. Anarthrura: Holdich & Bird, 1986 : 79 , 98, table 2. Type Species. Anarthrurella clairae sp.nov. , by monotypy. Diagnosis . Anarthrurid with pleon normally developed. Labrum conical, not laterally compressed, relatively large. Mandibles not known (probably highly reduced). Maxillule endite with (at least) three spiniform seta. Maxilliped endite simple, with one seta; palp article­3 with three long inner setae. Cheliped propodus with prominent outer fold; with one ventral seta. Pereopods 1–3 stout, coxa with seta. Pereopods 4–6 carpus with three ordinary spiniform setae and one smaller dorsal seta. Pleopods present. Remarks . A combination of an unmodified labrum and possession of a fold on the cheliped fixed­finger is unique among known genera and the taxa included in this study and is the basis for the erection of a new genus. Additional material is required to pursue the equivocal details about mandible and maxillule structures. The species Leptognathia profunda may also belong in this genus – see below.