Phyllocoptes eupadi The leaf surface can be so densely covered with galls that it becomes deformed and wrinkled. The species is found in Denmark as well as in England and Scotland. Phyllocoptes eupadi Phyllocoptes eupadi is a mite that chemically induces a pouch gall to develop as a sub-spherical distortion rising up from the upper surface of the lamina of leaves of blackthorn shrubs "Prunus spinosa" and other "Prunus" spp. Synonyms are "Eriophyes padi" (Nalepa) and "Phytoptus padi prunianus" (Nalepa 1890). The gall's appearance on the upper surface is sub-spherical pustules, hairy and opening below, often clustering along the midrib, but also
Prunus avium parent species of "Prunus cerasus" (sour cherry), by way of ancient crosses between it and "Prunus fruticosa" (dwarf cherry) in the areas where the two species overlap. All three species can breed with one another. "Prunus cerasus" is now a species in its own right, having developed beyond a hybrid and stabilised. Pliny distinguishes between "Prunus", the plum fruit, and "Cerasus", the cherry fruit. Already in Pliny quite a number of cultivars are cited, some possibly species or varieties, Aproniana, Lutatia, Caeciliana, and so on. Pliny grades them by flavour, including dulcis ("sweet") and acer ("sharp"). and goes so far