Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2022-10-05
Page range: 245-259
Abstract views: 174
PDF downloaded: 33

The subfamily Pachyotominae in Mexico (Collembola: Isotomidae) with description of a new Pachyotoma species

Laboratorio de Ecología y Sistemática de Microartrópodos, Depto. Ecología y Recursos Naturales, Fac. Ciencias, UNAM, 04510, Ciudad de México, México.
C/ Ría de Solía 3, ch. 39, 39610 El Astillero (Spain).
Collembola taxonomy new records reticulation identification key


Pachyotoma primamexicana sp. nov, from Popocatépetl, Mexico is described; it is similar to Pachyotoma alpa (Christiansen & Bellinger, 1980) and P. muskegis (Guthrier, 1903). It can be distinguished from all other the members of the genus by the small size of PAO (about half the size of closest eye) and the formula (2,3,3) of the slightly capitate tenent hairs. An identification key for Nearctic Pachyotominae and a table with diagnostic morphological characters to the Nearctic species of the genus with integument clearly granulated is given. Three new records of species from Mexico are listed: Pachyotoma crassicauda (Tullberg, 1871), Coloburella octogenaria (Mills & Schmidt, 1957) and Bonetrura boneti (Yosii, 1962). A discussion on the distribution of the subfamily Pachyotominae and some notes on the biogeography of the subfamily are provided.



  1. Bagnall, R.S. (1949) Contribution towards a knowledge of the Isotomidae (Collembola). VII–XV. Annals and Magazine of Natural History, Series 12, 2 (14), 81–96.
    Bellinger, P.F., Christiansen, K.A. & Janssens, F. (1996–2022) Checklist of the Collembola of the World. Available from: (accessed 13 February 2022)
    Christiansen, K.A. & Bellinger, P.F. (1980) The Collembola of North America, North of the Rio Grande. Part. 2. Families Onychiuridae, Isotomidae. Publications Grinnell College, Grinell, Iowa, pp. 387–784.
    Christiansen, K.A. & Bellinger, P.F. (1998) The Collembola of North America north of the Rio Grande, a taxonomic analysis. Part. 2. Families Onychiuridae, Isotomidae. Grinnell College, Grinnell, Iowa, pp. 426–876.
    Deharveng, L. (1979) Chétotaxie sensillaire et phylogenèse chez les collemboles Arthropleona. Travaux du Laboratoire d’Écobiologie des Arthropodes Édaphiques, Toulouse, 1 (3), 1–15.
    Delgado de la Selva, E. (2010) Distribución geográfica de Collembola (Hexapoda: Collembola) en México. Tesis de licenciatura, Facultad de Ciencias, UNAM, México, D.F., 158 pp.
    Denis, J.R. (1929) Notes sur les Collemboles récoltés dans ses voyages par le Prof. F. Silvestri (descriptions d’espèces nouvelles). Bolletino del Laboratorio di Zoologia Portici, 22, 166–180.
    Folsom, J.W. (1937) Nearctic Collembola or Springtails, of the family Isotomidae. United Bulletin of the States National Museum 168. Sminthsonian Institution, Washington, D.C., 144 pp.
    Guthrie, J.E. (1903) The Collembola of Minnesota. Geological and Natural History Survey of Minnesota, Zoological Series 4. Geological and Natural History Survey of Minnesota, Minneapolis, Minnesota, 110 pp.
    Magaña-Martínez, C.S. & Palacios-Vargas, J.G. (2010) Colémbolos (Hexapoda) del Nevado de Colima, Jalisco, México. Dugesiana, 17 (1), 73–80.
    Mills, H.B. & Schmidt, F.H. (1957) The Coloburella-Boernerella complex with description of a new species (Collembola, Isotomidae). Acata zoologica cracoviensia, 2 (15), 1–9.
    Morrone, J.J. (2015) Hacia una síntesis biogeográfica de México. Revista Mexicana de Biodiversidad, 76 (2), 207–258.
    Morrone, J.J. (2019) Regionalización biogeográfica y evolución biótica de México: Encrucijada de la biodiversidad del Nuevo Mundo. Revista Mexicana de Biodiversidad, 90 (e903980), 1–68.
    Palacios-Vargas, J.G. (2013) Biodiversidad de Collembola (Hexapoda: Entognatha) en México. Revista Mexicana de Biodiversidad, 85 (Supplement), 220–231.
    Palacios Vargas, J.G. & Castaño-Meneses, G. (2009) Importance and evolution of sexual dimorphism in different families of Collembola (Hexapoda). Pesquisa Agropecuária Brassileira, 44 (8), 959–963.
    Palacios-Vargas, J.G., Estrada, D.A. & Paniagua, J. (2004) Collembola. In: Luna, I., Morrone, J.J. & Espinosa, D. (Eds.), Biodiversidad de la Sierra Madre Oriental. Prensas de la Facultad de Ciencias, UNAM, México, D.F., pp. 271–281.
    Palacios-Vargas, J.G., Cutz-Pool, L.Q. & Estrada Bárcenas, D.A. (2007) Collembola. In: Luna, I., Morrone, J.J. & Espinosa, D. (Eds.), Biodiversidad de la Faja Volcánica Transmexicana. Las Prensas de Ciencias, UNAM. México, D.F., pp. 331–344.
    Potapov, M. (2001) Isotomidae. In: Dunger, W. (Ed.), Synopses on Paleartic Collembola. Vol. 3. Abdhandlungen und Berichte des Naturkundemuseums Görlitz, 73 (2), 1–603.
    Potapov, M.B., Lobkova, L.E. & Shrubovych, J.E. (2005) New and little known palaearctic Pachyotominae (Collembola: Isotomidae). Russian Entomological Journal, 14 (1), 75–82.
    Soto-Adames, F.N. & Giordano, R. (2011) New species of springtails in the Proisotoma genus complex from Vermont and New York, USA with descriptive notes on Ballistura alpa Christiansen & Bellinger 1980 (Hexapoda, Collembola, Isotomidae). ZooKeys, 147, 19–37.
    Tullberg, T. (1871) Förteckning öfver Svenska Podurider. Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar, 28 (1), 143–155.
    Wray, D.L. (1958) New forms of North American Collembola. Nature Notes Afield, Occasional Papers, 2, 1–12.
    Yosii, R. (1962) Studies on the Collembolan genus Hypogastrura II. Nearctic forms collected by Prof. F. Bonet. Contributions from the Biological Laboratory, Kyoto University, 13, 1–25.