Blackberry Leaf Midge

Signs of Dasineura plicatrix are contorted, young bramble leaves, which are found in the spring and early summer. The leaves can be creased, pleated or pluckered, with thickened veins, and conspicuous black staining around the gall. The white larvae can be found until early summer when they drop out of the galls and pupate in the soil. There is disagreement in the literature as to whether there is a single generation a year or several per year. The gall is often overlooked as just a crumpled leaf. Galls have been found on the following species,