Trichopolydesmidae

Trichopolydesmidae is a family of millipedes belonging to the order Polydesmida. This family includes two genera (Galliocookia and Occitanocookia) notable for featuring sexual dimorphism in segment number: adult females in these genera have the 20 segments (including the telson) usually found in this order, but adult males have only 19. This family also includes the species Deharvengius bedosae, notable for being among the very few species in this order to feature adults with only 18 segments rather than the 20 segments usually found in polydesmids.

Genera
This family includes the following genera:
 * Aporodesmella Golovatch, Geoffroy & VandenSpiegel, 2014
 * Bacillidesmus Attems, 1898
 * Balkanodesmus Antić & Reip, 2014
 * Banatodesmus Tabacaru, 1980
 * Cottodesmus Verhoeff, 1936
 * Deharvengius Golovatch, Geoffroy & VandenSpiegel, 2013
 * Galliocookia Ribaut, 1955
 * Gonatodesmus Golovatch, Geoffroy & VandenSpiegel, 2013
 * Haplocookia Brölemann, 1915
 * Helicodesmus Golovatch, Geoffroy & VandenSpiegel, 2014
 * Ingurtidorgius Strasser, 1974
 * Leonardesmus Shelley & Shear, 2006
 * Mauritacantha Mauriès & Geoffroy, 1999
 * Mauritacantha Verhoeff, 1939
 * Monstrodesmus Golovatch, Geoffroy & VandenSpiegel, 2014
 * Nevadesmus Shear, 2009
 * Occitanocookia Mauriès, 1980
 * Pratherodesmus Shear, 2009
 * Sequoiadesmus Shear & Shelley, 2008
 * Simplogonopus Vagalinski, Golovatch, Akkari & Stoev, 2019
 * Solentanodesmus Antić, Reip, Dražina, Rađa & Makarov, 2014
 * Sphaeroparia Attems, 1909
 * Trichopolydesmus Verhoeff, 1898
 * Trilobodesmus Golovatch & Mauriès, 2007
 * Velebitodesmus Antić, Reip, Dražina, Rađa & Makarov, 2014