Species (Aspidiotus perniciosus) of scale insect first discovered in North America at San Jose, Cal., in 1880 but probably a native of China. A waxy gray secretion (the scale) covers the yellow females, which are about 0.06 in. (1.5 mm) in diameter. The scale is elevated in the center and is surrounded by a yellow ring. The female produces several generations of living young each year. San Jose scales can completely cover tree branches and may eventually kill the tree.
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City (pop., 2000: 894,943), west-central California, U.S. Located southeast of San Francisco, San Jose was the first civic settlement in California. Founded in 1777 as a farming community, it became a Spanish military supply base and was the state's first capital (1849–52). In 1850 it became the first chartered city in California. It was a trade depot for the California gold fields. The railroad from San Francisco improved trade connections for the produce of nearby farms. San Jose is a processing and distribution centre for a rich agricultural area producing fruit and wine. It is part of Silicon Valley, and its industries include the manufacture of electronic, computer, and aerospace components, auto parts, and consumer goods.
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It can be also a friendly short-form for females named Josefina in Spanish-speaking countries.