Key to males of Autostreptus 1. Telopodite (tp) with a broad, lamellar expansion (ltp) (Figs 5D–E, 7D–E); ltp covering distally the solenomere (sl), and with its margin thickened (Figs 5F, 7F) .......................................................... 2 – Telopodite (tp) with a thick, but not broad lamellar expansion (ltp) (Fig. 9C–F) ............................... ..................................................................................................................... A. silvagonzalezi sp. nov. 2. First leg-pair with subtriangular prefemoral process (pfp) (Fig. 5A); ltp with a protruding serrated zone, hidden by lamellar expansion (Fig. 5F) ....................................... A. chilensis (Gervais, 1847) – First leg-pair with subrectangular prefemoral process (pfp) (Fig. 7A); ltp with a distally bifurcated process, hidden by lamellar expansion (Fig. 7F) .......................... A. yanezi Demange & Silva, 1971

Published as part of Parra-Gómez, Antonio, Iniesta, Luiz F. M. & Morales, Jesús A., 2025, Revisiting the poorly known Chilean genus Autostreptus Silvestri, 1905 (Diplopoda, Spirostreptida, Spirostreptidae) with the description of a new species, pp. 237-258 in European Journal of Taxonomy 1004 on page 253, DOI: 10.5852/ejt.2025.1004.2975, http://zenodo.org/record/16738973