These six lesions ranged from 1x1 to 2x2 mm, brown to black, pinpoint foci. Histologically, they
were characterized as erosions that extended through the epicuticle and exocuticle and usually
into the outer calcified endocuticle. The lesions were often melanized. Bacteria and debris were
sometimes seen on the eroded surface. The underlying epithelium was normal to moderately hypertrophic, with mild numbers of granulocytes migrating into the epithelial layer and between the calcified endocuticle and the epithelium.