New data from mygalomorph spiders (Araneae: Mygalomorphae) of Estado de Mexico, with taxonomic comments about the genus Davus O. Pickard-Cambridge, 1892

The information about mygalomorph spiders (Dipluridae y Theraphosidae) of Estado de Mexico is presented, new locations are cited, three species are cited for the first time, four new species of the Theraphosidae family are described, and data on the genus Davus O. Pickard-Cambridge, 1892 are provided as well as most significance taxonomic characteristics are illustrated.