 Culicidae ('mosquitos'). Mosquito bugs can damage leaves both by sucking plant materials, and by the laying of eggs (oviposition) within the plant. Spraying with synthetic insecticides may be deemed appropriate.[77] Other pests are Lepidopteran leaf feeders and various tea diseases.Production[සංස්කරණය]Tea is mainly grown in Asia and Africa, though it is also grown in South America and around the Black and Caspian Seas. The four biggest tea-producing countries are China, India, Kenya and Sri Lanka, together representing 75% of world tea production. Smaller hubs of production include such places as São Miguel Island, Azores, in Portugal, and Guria, in Georgia. In 2020, global production of tea was 7.0 million tonnes, led by China with 42% and India with 20% of the world total. Kenya, Argentina, and Sri Lanka were secondary producers.[78]Storage[සංස්කරණය]Storage conditions and type determine the shelf life of tea; that of black teas is greater than that of green teas. Some, such as