Evaluation of Serangium parcesetosum (Coleoptera: Coccinellidae) for Biological Control of Silverleaf Whitefly, Bemisia argentifolii (Homoptera: Aleyrodidae), on Poinsettia

Searching and Feeding Behavior of Nephaspis oculatus and Delphastus catalinae (Coleoptera: Coccinellidae), Predators of Bemisia argentifolii (Homoptera: Aleyrodidae)

The coccinellids Nephaspis oculatus (Blatchley) and Delphastus catalinae (LeConte) [formerly D. pusillus (LeConte)] are predators of whiteßies (Homoptera: Aleyrodidae), and have shown potential for biological control of Bemisia argentifolii Bellows & Perring in greenhouses. We observed the searching and feeding behavior of N. oculatus and D. catalinae on hibiscus (Hibiscus rosa-sinensis L.). D....

Population Ecology of Whitefly, Bemisia tabaci, (Homoptera: Aleyrodidae) on Brinjal

Effect of Parasitoid Release Pattern on Whitefly (homoptera: Aleyrodidae) Control in Commercial Poinsettia

Under commercial poinsettia production conditions we compared two patterns of parasitoid release for the aphelinid whitefly parasitoid Eretmocerus eremicus Rose and Zolnerowich. We compared the currently used pattern of a fixed weekly release number (3 females per plant per week) to an experimental pattern in which more parasitoids were released early in the crop (wks 1-8), followed by a lower ...

Location of Geminiviruses in the Whitefly Bemisia tabaci (Homoptera: Aleyrodidae)

W. B. Hunter, University of Florida, Gulf Coast Research and Education Center, 5007 60 St. E., Bradenton 342039324; E. Hiebert, University of Florida, Plant Pathology Department, 1453 Fifield Hall, Gainesville 32611-0680; S. E. Webb, University of Florida, Central Florida-REC, 5336 University Ave., Leesburg 34748-8232; J. H. Tsai, University of Florida, Ft. Lauderdale-REC, 3205 S.W. College Ave...

Discovering new insect viruses: whitefly iridovirus (Homoptera: Aleyrodidae: Bemisia tabaci).

Adult whiteflies, Bemisia tabaci (Gennadius), collected from the field were screened for viral pathogens using a cell line from the silverleaf whitefly, B. tabaci, B biotype (syn. B. argentifolii). Homogenates from the field-collected whiteflies were applied to cell cultures and checked for cytopathic effects (CPE). Cells were observed to develop cytoplasmic inclusions and to have a change in m...