ABSTRACT. – Centipede assemblages (Myriapoda: Chilopoda) were studied in four 20-yearold reforestations with native oak and conifer species (holm-oak Quercus ilex, Turkey-oak Quercus cerris, and Aleppo pine Pinus halepensis) and in two semi-natural mixed oak forests (Q. cerris and Quercus frainetto forest; Q. ilex forest) in Latium (Central Italy). The four reforested areas had been previously used for agricultural purposes. Samples were collected monthly by pitfall traps for a period of 8 months (March-October 2013). The use of statistical tests to compare values of richness, dominance, diversity and equitability, as well as the use of the two main niche-based species abundance models (geometric series and Mac-Arthur broken stick), revealed a strong decrease in species diversity and equitability values between semi-natural forest types and reforestations. Our results suggest that the centipede assemblage structure of a reforested area is very similar to that of a forest in a secondary successional stage, not only in terms of species composition but also in terms of assemblage structure, with low levels of equitability and high degree of dominance by one or a few species. Moreover, reforestations with native broadleaf species belonging to the local potential forest vegetation could better contribute than conifers to the conservation of the diversity of forest centipede assemblages in the extremely fragmented agricultural landscape of the study area.