Abstract
The taxonomy of the monotypic genus Diguetinus Roewer, 1912 is discussed with a redescription of the only named species. The redescription, illustrations, and photographs are based upon male and female type specimens as well as a pair of more recently collected specimens from a relatively nearby location; both in Jalisco, Mexico. The genitalia are illustrated for the first time. A distribution map is provided with all verified records from iNaturalist included from: Aguascalientes, Jalisco, Guanajuato, Querétaro, Michoacán, Estado de México, Ciudad de México, Hidalgo, and Puebla. All available knowledge on the natural history is presented including biogeography and distribution, local distribution and habitat use, influence of physical factors, and interspecific relations.
References
Banks, N. (1898) Some Mexican Phalangida. Journal of the New York Entomological Society, 6 (3), 181–182.
Bronn, H.G. (1932) Dr. H. G. Bronn’s Klassen und Ordnungen des Thier-Reichs: Wissenschaftliche dargestellt in Wort und Bild. Allgemeine Übersicht der Klasse Arachnoidea (Spinnentiere). 5 (4). C.F. Winter, Leipzig, 1–9.
Cokendolpher, J.C. (1984) A new genus of North American harvestmen (Arachnida: Opiliones: Palpatores). In: Horner, N.V. (Ed.), Festschrift for Walter W. Dalquest in honor of his sixty-sixth birthday. Midwestern State University, Wichita Falls, Texas, pp. 27–43.
Cokendolpher, J.C. (1993) Pathogens and parasites of Opiliones (Arthropoda: Arachnida). Journal of Arachnology, 21, 120–146.
Cokendolpher, J.C. & Lee, V.F. (1993) Catalogue of the Cyphopalpatores and bibliography of the harvestmen (Arachnida, Opiliones) of Greenland, Canada, U.S.A., and Mexico. Privately Published, Lubbock, Texas, iii + 82 pp.
Cokendolpher, J.C., MacKay, W.P. & Muma, M.H. (1993) Seasonal population phenology and habitat preferences of montane harvestmen (Arachnida: Opiliones) from Southwestern New Mexico. The Southwestern Naturalist, 38 (3), 236–240.
https://doi.org/10.2307/3671428
CONABIO [Comisión Nacional para el Conocimiento y Uso de la Biodiversidad] (1997) ‘Provincias biogeográficas de México’. Escala 1:4000000. Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, México, D.F. [map]
Crawford, R.L. (1992) Catalogue of the genera and type species of the harvestman superfamily Phalangioidea (Arachnida). Burke Museum Contributions in Anthropology and Natural History, Seattle, 8, 1–60.
Curtis, D.J. & Machado, G. (2007) Ecology. In: Pinto-da-Rocha, R, Machado, G. & Giribet, G. (Eds), The Harvestmen: The Biology of Opiliones. Harvard University Press, Cambridge, Massachusetts, pp. 280–308.
Di Caporiacco, L. (1938) Aracnidi del Messico, di Guatemala e Honduras Britannico. Atti della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano, 77 (3), 251–282.
Goodnight, C.M. & Goodnight, M.L. (1942) New and little known Phalangida from Mexico. American Museum Novitates, 1163, 1–16.
Gruber, J. (1969) Bemerkungen zur Genitalmorphologie und systematischen Stellung Metopilio australis (Banks) (Phalangiidae: Opiliones, Arachnida). Annalen des Naturhistorischen Museums in Wien, 73, 271–274.
Holmberg, R.G., Angerilli, N.P.D. & LaCasse, L.J. (1984) Overwintering aggregations of Leiobunum paessleri in caves and mines (Arachnida, Opiliones). Journal of Arachnology, 12, 195–204.
Kury, A.B. & Cokendolpher, J.C. (2000) Opiliones. Biodiversidad, Taxonomía y biogeografía de Artrópodos de México; Hacia una síntesis de su conocimiento, México, D.F., 2 (6), 137–157.
Kury, A.B. & Cokendolpher, J.C. (2020) Chapter 9. A new family from the New World (Eupnoi: Phalangioidea). In: Kury, A.B., Mendes, A.C., Cardoso, L., Kury, M.S. & Granado, A. de A. (Eds.), WCO-Lite: online world catalogue of harvestmen (Arachnida, Opiliones). Version 1.0—Checklist of all valid nomina in Opiliones with authors and dates of publication up to 2018. Privately Publ. Kury, Rio de Janeiro, pp. 52–54.
Machado, G., Buzatto, B.A., García-Hernández, S. & Macías-Ordóñez, R. (2016) Macroecology of sexual selection: a predictive conceptual framework for large-scale variation in reproductive traits. American Naturalist, 188, S8–S27.
https://doi.org/10.1086/687575
Morrone, J.J., Espinosa Organista, D. & Llorente Bousquets, J. (2002) Mexican biogeographic provinces: preliminary scheme, general characterizations, and synonymie. Acta zoológica mexicana, 85, 83–108.
Pickard-Cambridge, F.O. (1905) [Order Opiliones, pp. 546–585 + pls. 52–54]. Arachnida. Araneidea and Opiliones. Biologia Centrali-Americana, 2, i–ix + 1–610, pls. 1–54. [1904, pp. 545–560, pl. 52; 1905 pp. 561–610, pls. 53, 54; all Palpatores sections printed January 1905].
Roewer, C.F. (1912) Revision der Opiliones Palpatores (= Opiliones Plagiostethi) II. Teil: Familie der Phalangiida. (Subfamilien Sclerosomini, Oligolophini, Phalangiini). Abhandlungen und Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg, 20 (1), 1–295, pls. 1–4.
Roewer, C.F. (1923) Die Weberknechte der Erde. Systematische Bearbeitung der bisher bekannten Opiliones. Gustav Fischer, Jena, v + 1116 pp.
Roewer, C.F. (1956) Über Phalangiinae (Phalangiidae, Opiliones Palpatores). (Weitere Weberknechte XIX). Senckenbergiana biologica, 37 (3/4), 247–318.
Šilhavý, V. (1970) Nouvelles recherches sur la famille des Neopilionidae Lawrence. Bulletin du Muséum National D‘histoire Naturelle, Series 2, 41 (1), 171–175.
Sundevall, C.J. (1833) Conspectus Arachnidum. Typ. C.F. Berling, Londini Gothorum, 39 pp.
Tsurusaki, N. (2003) Phenology and biology of harvestmen in and near Sapporo, Hokkaido, Japan, with some taxonomical notes on Nelima suzukii n. sp. and allies (Arachnida: Opiliones). Acta Arachnologica, 52 (1), 5–24.
https://doi.org/10.2476/asjaa.52.5
Weidner, H. (1959) Die Entomologischen Sammlungen des Zoologischen Staatsinstituts und Zoologischen Museums Hamburg. 1. Teil, Pararthropoda und Chelicerata, I. Mitteilungen aus dem Hamburgischen Zoologischen Museum and Institut, 57, 89–142.
Wijnhoven, H. (2013) Sensory structures and sexual dimorphism in the harvestman Dicranopalpus ramosus (Arachnida: Opiliones). Arachnologische Mitteilungen, 46, 27–46.
https://doi.org/10.5431/aramit4605