A new species of Dasineura Rondani, 1840 (Diptera, Cecidomyiidae) from Brazil, Dasineura occulta sp. nov., is described associated with Hypochaeris chillensis (Kunth) Britton (Asteraceae), an invasive and common species in anthropic environments. This new species was found occupying capitula and does not form galls or any external modifications in inflorescence tissue that can be recognized externally. Drawings of adult morphological structures (male and female), larva and pupa are presented. Plates showing the host occupation are included.
Biological control; Invasive species; Neotropical Region; Taxonomy
