Gammanema Cobb 1920

• Main Author: Leduc, Daniel
• Format: Text
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Nematoda; Adenophorea; Desmodorida; Choniolaimidae; Gammanema; New Zealand; White Sea
• Online Access: https://dx.doi.org/10.5281/zenodo.3843873; https://zenodo.org/record/3843873

Genus Gammanema Cobb, 1920 Type species Gammanema ferox Cobb, 1920 (junior synonym of Gammanema rapax (Ssaweljev, 1912)). Diagnosis Cuticle without lateral differentiation, four slender cephalic setae; outer labia either papillose or setose. Amphideal fovea usually spiral, rarely loop-shaped.Anterior buccal cavity large, cup-shaped, surrounded by rhabdions with pointed projections at their posterior ends; posterior buccal cavity smaller, often with broad column-shaped rhabdions. Pharynx without anterior or posterior bulb. Pre-cloacal supplements present, usually cup-shaped, rarely setose or tubular. Short conical tail. Remarks Gammanema paramenzeli (Allgén, 1935) was considered doubtful by Gerlach (1964), Trogolaimus uniformis Cobb, 1920 was transferred to Gammanema by Tchesunov & Okhlopkov (2006) and G. fennicum Gerlach, 1953 was re-established as a valid species by Okhlopkov (2002). *approximate values only since no anus was observed in female specimens Valid species G. anthostoma Okhlopkov, 2002 G. cancellatum Gerlach, 1955 G. curvata Gagarin & Klerman, 2007 G. conicauda Gerlach, 1953 G. fennicum Gerlach, 1953 G. kosswigi Gerlach, 1964 G. mediterraneum Vitiello, 1970 G. polydonta Murphy, 1965 G. rapax (Ssaweljev, 1912) G. smithi Murphy, 1964 G. tchesunovi Gagarin & Klerman, 2007 G. uniformis (Cobb, 1920) : Published as part of Leduc, Daniel, 2013, Two new genera and five new species of Selachinematidae (Nematoda, Chromadorida) from the continental slope of New Zealand, pp. 1-32 in European Journal of Taxonomy 63 on pages 19-21, DOI: 10.5852/ejt.2013.63, http://zenodo.org/record/3823012 : {"references": ["Gerlach S. A. 1964. Revision der Choniolaiminae und Selachinematinae (freilebende Meeres-Nematoden). Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut (Kosswig-Festschrift): 23 - 49.", "Tchesunov A. V. & Okhlopkov J. R. 2006. On some selachinematid nematodes (Chromadorida: Selachinematidae) deposited in the collection of the Smithsonian National Museum of Natural History. Nematology 8: 21 - 44. http: // dx. doi. org / 10.1163 / 156854106776179890", "Okhlopkov J. R. 2002. Free-living nematodes of the families Selachinematidae and Richtersiidae in the White Sea (Nematoda, Chromadorida). Zoosystematica Rossica 11: 41 - 55."]}