Functional Guilds, Invasion Status, Endemism, and Rarity of Ants // Provides functions for the analysis of ant communities, aiming to standardize workflows in myrmecology. The package automates the assignment of species to functional guilds based on trophic strategies, feeding habits, and foraging behavior, using established classification frameworks (Silva et al., 2015 doi:10.7476/9788574554419; Silvestre et al., 2003 isbn:9588151236; Delabie et al., 2000 https://www.researchgate. net/publication/44961742_Sampling_Ground- Dwelling_Ants_Case_Studies_from_the_World%27s_Rain_Forests), and also includes a novel classification system implemented within the package, developed from ant species occurring in urban environments. It also includes routines to flag exotic species of Brazil (Vieira, 2025, unpublished master's thesis), identify endemic species (Silva et al., 2025 doi:10.37885/250920259), and classify species rarity and rarity forms of the Atlantic Forest (Silva et al., 2024 doi:10.1016/j.biocon.2024.110640). The package reduces manual effort and improves reproducibility, supporting research and biodiversity management of Neotropical ant communities.