Siphonolabrum Lang 1972

• Main Author: Bird, Graham J.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Tanaidacea; Anarthruridae; Siphonolabrum; Antarc*; Antarctic; Antarctic Peninsula; Joubin Islands
• Online Access: https://doi.org/10.5281/zenodo.6240015; http://treatment.plazi.org/id/039C7342FF95757E48F7FF661D7BF827

Genus Siphonolabrum Lang, 1972 Siphonolabrum Lang, 1971: 361, 365 (remarks), 367 (key to genera), as nomen nudum . Sieg, 1986b: 140 –142 (remarks on genus and key to species), 142–152, figs 95–99 (description of S. fastigatum ). Siphonolabrum Lang, 1972: 214 (generic diagnosis), 214–221, figs 1–4, plate 1 (description of S. mirabile ). Sieg, 1983: 299 –300 (bibliography). Kudinova-Pasternak, 1984: 108 –109, figs 10–11 (description of S. langi ). Gutu & Sieg (1999), 384 (classification). Dojiri & Sieg, 1997: 220 –224, figs 3.12–3.13 (description of S. californiensis ). Larsen & Wilson, 2002: 12, 14 (classification derived from phylogenetic analysis). Bird, 2004: 2, 7–8 (remarks). Larsen, 2006: 141, 142 (remarks). Type species: Siphonolabrum mirabile Lang, 1972, by monotypy. Species included ( Japanese and trench species in bold): S. californiensis Dojiri & Sieg, 1997 (Santa Barbara Channel, California, 98 metres); S. fastigatum Sieg, 1986 (Joubin Islands, Antarctic Peninsula, 49–75 metres); S. langi , (Central Pacific, 1735–2430 metres); S. mirabile , (Guatemala Basin [Central East Pacific], 3534– 3563 metres, and the Azores [NE Atlantic], 4165 metres); S. tenebrosus n.sp . Diagnosis (largely derived from Lang (1972) and Sieg (1986b) but with some amendments). Female/neuter . Anarthrurid with pleon with five pleonites, about as wide as the pereonite 6 and pleotelson. Antennule of female four-articled. Antenna six-articled (but see below), terminal article very small. Labrum prominent, narrower than deep. Mandibles translucent and weak, incisor narrow, with denticulate tip, molar and lacinia mobilis lacking. Epignath with short terminal seta. Maxillule with eight unequal terminal setae. Maxilliped palp article 3 with three long setae; endite with one long seta. Cheliped propodus and fixed finger without fold, but with longitudinal ridge on latter; fixed finger with one ventral seta and two prominent teeth on incisive margin. Dactylus of pereopods 1–3 with long accessory seta. Carpus of pereopods ...