Predicted voltinism of the camellia spiny whitefly, Aleurocanthus camelliae (Hemiptera: Aleyrodidae), in major Japanese tea-producing districts based on life history parameters

We examined the temperature-dependent development, adult longevity, fertility, and sex ratio of the white-fly Aleurocanthus camelliae, which infests tea plants, under laboratory conditions. Eggs and nymphs were reared on tea shoots at 20, 22.5, 25, and 27.5 degrees C with a photoperiod of 15L:9D. The developmental zero of the egg, total nymphal stadia, and egg adult duration of A. camelliae were 12.6, 11.6, and 11.9 degrees C, respectively, with thermal constants of 176.7, 394.7, and 569.9 d-degrees, respectively. The mean longevities of adult female and male A. came/hoe were 4.4 and 2.7 d, respectively. These results suggested A. camelliae voltinism of two to three generations per year in Kanto, Tokai, and Kinki districts and three to five generations per year in the Shikoku and Kyushu districts, Japan. (C) Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society, 2011. Published by Elsevier B.V. All rights reserved.