Females embed a fertilized egg into the stem of the plant and a gall will form as the plant swells around the egg. Galls are swollen, round bumps on a stem. If cut open before hatching, eggs will be visible inside the gall. Galls on this plant with this species can grow to almost a centimeter in diameter on the stem and are usually found at the softer, younger parts of a stem. The larvae molt and pupate while inside their galls and emerge as adults. Adults feed on the plant stems and petioles (the leaf 'stem' that connects it to the main plant), then repeat the reproduction cycle. This insect activity at various life stages can cause overloaded stems to break, fall off, or fail to move nutrients to the rest of the vine.