Scaptognathus tridens Trouessart 1889

• Main Author: Abé, Hiroshi
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Trombidiformes; Halacaridae; Scaptognathus; Scaptognathus tridens; Seta; Rouen; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.4889640; https://zenodo.org/record/4889640

Scaptognathus tridens Trouessart, 1889 Diagnosis. Glp-1 not found. Ds-2 on membranous cuticle. PE with 1 dorsal seta. GA bipartite in female and male. Female with 6 Pgs. Male with 20 Pgs and 6 Sgs. Tr I–IV with 1-0-1-1 setae; Bf I–IV with 2-2-1-1 setae; Tf I–IV with 4-3-3-3 setae, 2-1-0-0 Bp setae; Gn I–IV with 4-4-2-3 setae, 2-1-0-0 Bp setae; Tb I–IV with 8-7-7-7 setae, 5-4-4-4 Bp setae; Ta I–IV with 3-3-3-3 dorsal setae, without Bp setae. Lc I with unidentate accessory process. Idiosoma length 370–450 in adult. Idiosoma width 236 in female (body length 650), 285 in male (idiosoma length 418). Gnathosoma length 280–330 in adult. Gnathosoma width 133 in female (gnathosoma length 273). Ratio of gnathosoma to idiosoma 0.67–0.79. Ratio of P-2 to P-1 2.63. Remarks. This species is distinguished from congeners by the shape of AD, the lack of Glps on dorsum, and the absence of Bp setae on Ta I–IV. Female and male are known. Habitat. Sublittoral zone: Sandy sediment, sediment with algae, and coarse or shell gravels at 6–18 m depth. Distribution. North Atlantic Ocean: Roscoff (Bay of Morlaix), Le Croisic (Bay of Biscay) [France]. West Cork [Ireland]. Plymouth, Down [UK]. Mediterranean: Île Riou [France]. References. Abé (1990c), Abé & Green (1994), André (1940, 1946), Bamber (1982), Bartsch (1978b, 1979a, 1986b, 1994b), Green & Macquitty (1987), Halbert (1915), Lohmann (1893b, 1901), Monniot (1964), Somerfield (1991), Trouessart (1889a, 1893, 1896a), Trouessart & Neumann (1894a, 1894b). Depository. MNHNP (?). : Published as part of Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, pp. 201-255 in Zootaxa 4980 (2) on page 236, DOI: 10.11646/zootaxa.4980.2.1, http://zenodo.org/record/4888860 : {"references": ["Abe, H. (1990 c) Two new species of the genus Scaptognathus (Acari, Halacaridae) from Hokkaido, Japan. Cahiers de Biologie Marine, 31, 349 - 363.", "Abe, H. & Green, J. (1994) A new species of the genus Scaptognathus (Acari: Halacaridae) from Tasmania. Acta Arachnologica, 43, 169 - 178.", "Andre, M. (1940) La faune acarologique du systeme littoral. Contribution a l'etude de la repartition actuelle et passee des organismes dans la zone neritique, 7, 331 - 345.", "Andre, M. (1946) Halacariens marins. Faune de France, 46, 1 - 152.", "Bamber, R. N. (1982) A taxonomic key to the British marine mites of the Halacaridae. Porcupine Newsletter, 2, 92 - 98.", "Bartsch, I. (1978 b) Halacaridae (Acari) von Gezeitenstranden Nordnorwegens. Mikrofauna des Meeresbodens, 70, 1 - 22.", "Bartsch, I. (1979 a) Halacaridae (Acari) aus der Bucht von Morlaix (Bretagne). Acarologia, 21, 34 - 45.", "Bartsch, I. (1986 b) Lohmannellinae (Halacaroidea, Acari) aus dem Mittelmeer. Entomologische Mitteilungen aus dem Zoologischen Museum Hamburg, 8, 231 - 244.", "Bartsch, I. (1994 b) Sexualdimorphismus bei Meeresmilben (Halacaridae, Acari). Ubersicht und Beschreibung des Mannchens von Phacacarus flavellus. Zoologischer Anzeiger, 232, 61 - 74.", "Green, J. & Macquitty, M. (1987) Halacarid Mites. In: Kermack, D. M. & Barnes, S. K. (Eds.), Synopsis of the British Fauna (New Series), Number 36, E. J. Brill / Dr. W. Backhuys, London, pp. 1 - 178.", "Halbert, J. N. (1915) Clare Island Survey 39, Acarinida. Section II. Terrestrial and marine Acarina. Proceedings of the Royal Irish Academy, 31, 45 - 136.", "Lohmann, H. (1893 b) Die Halacarinen der Plankton-Expedition. Ergebnisse der Plankton-Expedition der Humboldt Stiftung, 2. G. a, 11 - 95.", "Lohmann, H. (1901) Fam. Halacaridae. Das Tierreich, 13, 273 - 305.", "Monniot, F. (1964) Sur deux especes du genre Scaptognathus presentes a Roscoff. Acarologia, 6, 491 - 498.", "Somerfield, P. J. (1991) Additional records of marine Halacaridae (Acari: Prostigmata) from Ireland. Bulletin of the Irish biogeographical Society, 14, 2 - 23.", "Trouessart, E. L. (1889 a) Revue synoptique de la famille des Halacaridae. Bulletin Scientifiques de la France et de la Belgique, Serie 3, 20, 225 - 251.", "Trouessart, E. L. (1893) Au bord de la mer. Geologie, faune et flore des cotes de France de Dunkerque a Biarritz. BibliotheIque Scientifique Contemporaine, J. B. Bailliere et Fils, Paris, 344 pp.", "Trouessart, E. L. (1896 a) Mode de distribution topographique des Entomostraces et Acariens marins sur les cotes de France et description de l' Acaromantis squilla Trt. Memoires de la Societe Nationale des Sciences Naturelles et Mathematiques de Cherbourg, 30, 91 - 98.", "Trouessart, E. L. & Neumann, M. G. (1894 a) Note sur les acariens marins (Halacaridae) dragues par M. P. Hallez dans le Pas-de- Calais. Revue Biologique du Nord de la France, 6, 154 - 184.", "Trouessart, E. L. & Neumann, M. G. (1894 b) Note sur les acariens marins (Halacaridae) recoltes par M. Henri Gadeau de Kerville sur le littoral du department de la Manche (Juillet - Aout 1893). Bulletin de la Societe Amis des Sciences Naturelles, Rouen, 9, 139 - 175."]}