Severe damage to Casuarina glauca trees (Sieb. ex. Spreng, 1826) (Fagales: Casuarinaceae), observed in the municipality of Central, Bahia State, Brazil, was caused by nymphs and adults of the grasshopper, Tropidacris collaris (Stoll, 1813) (Orthoptera, Acridoidea; Romaleidae). Tropidacris collaris grasshoppers were found on 100% of the C. glauca trees. These trees were defoliated from the bottom upwards to the apex, and the majority (86%) had up to 50% of canopy damaged. This is the first record of T. collaris attacking C. glauca in Brazil.Danos às plantas Casuarina glauca (Sieb. ex Spreng, 1826.) (Fagales: Casuarinaceae) foram observados no município de Central, Bahia, Brasil causada por ninfas e adultos do gafanhoto Tropidacris collaris (Stoll, 1813) (Orthoptera, Acridoidea: Romaleidae). Gafanhotos foram encontrados em 100% das plantas que causam danos a partir da base para o ápice e, até 50% das copas de 86% das árvores desfolhadas. Este é o primeiro registro de T. collaris atacando C. glauca no Brasil.