CO₂-baited BG-Sentinel 2 traps are widely used for mosquito surveillance; however, their non-target catches can also yield valuable insights into broader insect biodiversity. Building on previous research, we analyzed incidental captures collected from multiple sites across Slovakia, focusing on two invasive synanthropic species - the moth midge Clogmia albipunctata (Williston, 1893) (Psychodidae) and the spotted-wing drosophila Drosophila suzukii (Matsumura, 1931) (Drosophilidae). Using these traps, we successfully mapped their distribution across urban and semi-urban habitats, recording occurrences in several previously unreported localities. Our findings highlight the potential of CO₂ traps as practical tools for faunistic monitoring beyond mosquito targets, revealing patterns of distribution and spread of invasive Diptera. This study underscores the broader value of repurposing standard mosquito surveillance infrastructure for multi-taxa biodiversity assessments and early detection of invasive species in human-influenced environments.