Storage and formulation of the entomopathogenicnematodes Heterorhabditis indica and H. Cassida vittata and nobilis uppersides Population fluctuations of the beet fly, Pegomyia mixta Vill. Potential of the entomopathogenic nematodes Steinernema feltiae, S. Deposited eggs peaked earlier and two weeks la. Feeding pores increased by increasing population density of larvae and adults reached its peak in early June. Indigenous entomopathogenic fungi and entomopathogenic nematodes greatly reduced pest numbers in Egypt and increased sugar beet yields.
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Taxonomic placing: Insecta, Holometabola , Coleoptera , Chrysomelidae. Common name: Tortoise beetle. Geographical distribution: The Mediterranean and Middle East regions. Larva about 6 mm long, green, with 16 pairs of lateral spines and posteriorly two strong pincer-like spines. Host plants: Several Caryophyllaceae and Chenopodiaceae, especially sugar beets Beta vulgaris Linnaeus.
Life history: In the Middle East this pest raises annual generations, each female producing about eggs. The emerging larvae feed on the underside of leaves and may destroy entire leaves. Economic importance: The tortoise beetle is a very serious pest of sugar beets, leading to reductions in the sugar content of infested plants. Management Horticultural Control: Intercropping sugar beet with maize corn or beans reduced pest infestations.
Planting sugar beets in autumn had a similar effect. Chemical control: A carbamate , an organophosphate and neem provided pest control in Egypt. Biological control : Coccinellid and chrysopid predators feed on the pest and reduce its populations in Egypt. Indigenous entomopathogenic fungi and entomopathogenic nematodes greatly reduced pest numbers in Egypt and increased sugar beet yields. References Abdou, G. Use of some relatively safe compounds for controlling of the tortoise beetle, Cassida vittata Vill in sugar beet crop.
Borowiec, L. The Cassidinae Coleoptera: Chrysomelidae of Israel. Israel Journal of Entomology El-Fakharany, S. Effect of intercropping of maize, bean, cabbage and toxicants on the population levels of some insect pests and associated predators in sugar beet plantations. El-Khouly, M. Population fluctuations of the beet fly, Pegomyia mixta Vill. Egyptian Journal of Biological Pest Control Salem, S. Lab-field evaluation of some Egyptian isolates of entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana against sugar beet beetle Cassida vittata Vill.
Controlling the sugar beet beetle Cassida vittata with entomopathogenic nematodes. Journal of Pest Science —
EPPO Global Database
Coléoptères: définition, identification et sous-ordres