Decaffeination this trait could be bred into other coffee plants by crossing them with "C. charrieriana", or an equivalent effect could be achieved by knocking out the gene for caffeine synthase in normal coffee plants. Tea may also be decaffeinated, usually by using processes analogous to the direct method or the CO process, as described above. The process of oxidizing tea leaves to create black tea ("red" in Chinese tea culture) or oolong tea leaves from green leaves does not affect the amount of caffeine in the tea, though tea-plant subspecies (i.e., "Camellia sinensis sinensis" vs. "Camellia sinensis assamica") may differ
Jacobiasca formosana Jacobiasca formosana Jacobiasca formosana is an insect species belonging to the subfamily Typhlocybinae of the family Cicadellidae. Plant hosts include "Gossypium" (cotton) species and, notably, "Camellia sinensis" (Chinese tea plants). The species is distributed throughout East, Southeast, and South Asia (including in China, India, Malaysia, Pakistan, Sri Lanka, Taiwan, and Thailand). Common names for "J. formosana" include the small green leafhopper, tea green leafhopper, or tea jassid. In Mandarin Chinese, the insect is referred to as 茶小綠葉蟬 "(chá xiǎo lǜ yèchán)" or 小綠浮塵子 "(xiǎo lǜ fúchénzǐ)". In Siyen Hakka, it is called 著涎 "(Zhe xián)", 著蜒 "(Zhe yán)", or 著煙