Pears are the most susceptible, but apples, loquat, crabapples, quinces, hawthorn, cotoneaster, pyracantha, raspberry and some other rosaceous plants are also vulnerable.
en.wikipedia.org It can also be called "veranillo del membrillo" (little summer of the quince).
en.wikipedia.org This town is famous for its apple and quince plantations, with these fruits the villagers prepare fruit liquors, jams, sweets and other products.
en.wikipedia.org Other fruits that are often used are sour cherries, apples, mulberries and quince.
en.wikipedia.org The resulting stewed quince, called "muraba" is then preserved in jars and eaten like jam.
en.wikipedia.org