Involved in spore wall assembly. Localizes to the ascal side of growing prospore membranes in mid-meiosis II and to the spore wall in post-meiotic cells. Localizes to a specific subset of lipid droplets associated with the exterior surface of the spore throughout spore wall formation. A combined deletion of the LDS proteins RRT8, LDS1 and LDS2 fails to incorporate dityrosine and another yet uncharacterized component in the outer spore wall. Belongs to the LDS family.