Galls are in the form of distinct swellings on leaf petioles, midribs and stems on new foliage of both young growth and mature trees. Mean length of a gall containing a single wasp is 2.1 mm, and leaves of rapidly growing trees may contain greater than 50 galls per leaf (Mendel et al. 2004). The female wasps insert eggs into the upper side of the leaves and stems. As larvae develop, galls begin to form and the green color of the leaves containing the galls turns glossy pink. Subsequently, the leaf glossiness then diminishes and the galls turn from pink to red. Upon emergence of the wasps, the galls on the leaves turn light brown and the galls on the stems turn reddish-brown. The adults leave round exit holes after emergence

- Muhammad Z. Ahmed, Yisell V. Hernandez, Paul Skelley, Eric Rohrig, Cindy McKenzie, Lance S. Osborne, and Catharine Mannion: (2017) Eucalyptus gall wasp, Leptocybe invasa Fisher & La Salle (Insecta: Hymenoptera: Eulophidae), an emerging pest of eucalyptus in Florida^©