Scaptognathus trouessarti Halbert 1915

• Main Author: Abé, Hiroshi
• Format: Text
• Language: unknown
• Published: Zenodo 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Trombidiformes; Halacaridae; Scaptognathus; Scaptognathus trouessarti; Galapagos; Seta; Perez; O'Connor; Dingle; North Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.4889644; https://zenodo.org/record/4889644

Scaptognathus trouessarti Halbert, 1915 Diagnosis. Glp-1 not distinct. Ds-2 on membranous cuticle. PE with 1 dorsal seta. GA bipartite in male. Male with 32 Pgs. Tr I–IV with 1-1-1-1 setae; Bf I–IV with 2-2-1-1 setae; Tf I–IV with 4-4-3-2 setae, 2-1-0-0 Bp setae; Gn I–IV with 4-3-2 (3?)-3 setae, 2-1-0-0 Bp setae; Tb I–IV with 8-6-7-7(8?) setae, 5-3-4-4 Bp setae; Ta I–IV with 3-3-3-3 dorsal setae, without Bp setae. Lc I with unidentate accessory process. Idiosoma length 436 in male (holotype). Idiosoma width 284 in male (holotype). Gnathosoma length 284 in male (holotype). Gnathosoma width 132 in male (holotype). Ratio of gnathosoma to idiosoma 0.65 in male (holotype). Ratio of P-2 to P-1 4.10 in male (holotype). Remarks. This species resembles S. triden s and S. hallezi , however, differs from these two species by the round posterior margin of AD, Ds-2 on membranous cuticle, convex anterior margin of pars sclerosum in male, 32 Pgs in male, and leg chaetotaxy. Single male is known. Habitat. Sublittoral zone: Fine gravels at a depth of 35–39 m. Fronds and holdfasts of Laminaria ochroleuca (Phaeophyta). Distribution. North Atlantic Ocean: Dingle Bay [Ireland]. Mouro Is. (43°28’24’’N, 3°45’22’’W) [Spain]. References. Abé (1990c), Abé & Green (1994), Abé & O’Connor (1991), Bamber (1982), Bartsch (1994b), Bartsch & Schmidt (1978), Green & Macquitty (1987), Halbert (1915), Riesgo et al . (2010). Depository. NMID. : 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 pages 236-237, DOI: 10.11646/zootaxa.4980.2.1, http://zenodo.org/record/4888860 : {"references": ["Halbert, J. N. (1915) Clare Island Survey 39, Acarinida. Section II. Terrestrial and marine Acarina. Proceedings of the Royal Irish Academy, 31, 45 - 136.", "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.", "Abe, H. & O'Connor, J. P. (1991) A redescription of Scaptognathus trouessarti Halbert, 1915 (Acari, Halacaridae) with notes on some taxonomic characters. Irish Naturalists Journal, 23, 436 - 441.", "Bamber, R. N. (1982) A taxonomic key to the British marine mites of the Halacaridae. Porcupine Newsletter, 2, 92 - 98.", "Bartsch, I. (1994 b) Sexualdimorphismus bei Meeresmilben (Halacaridae, Acari). Ubersicht und Beschreibung des Mannchens von Phacacarus flavellus. Zoologischer Anzeiger, 232, 61 - 74.", "Bartsch, I. & Schmidt, P. (1978) Interstitielle Fauna von Galapagos. XXII. Zur Okologie der Halacaridae (Acari). Mikrofauna des Meeresbodens, 69, 1 - 37.", "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.", "Riesgo, A., Perez-Portela, R. & Arroyo, N. L. (2010) Halacarid mites (Acari: Halacaridae) associated with a North Atlantic subtidal population of the kelp Laminaria ochroleuca. Journal of Natural History, 44, 651 - 667."]}