The ciitrus root weevil, Diaprepes abbreviatus (Linnaeus) is native to Caribbean and was first reported in near Apopka,
Widespread – Greater and
The species has a wide range of host plants and it attacks more than 270 different host plants including citrus, sugarcane, potatoes, sweet potatoes, woody field-grown ornamentals, papaya, guava, mahogany, etc.
Larvae feed on fibrous and structural roots of citrus, predisposing the injured root system to infection and girdling by Phytophthora spp., while adult feeds on the leaves by notching along the margins of young leaves.
Biological and Ecological Notes
A female of D. abbreviatus can lay up to 5,000 eggs in her life span of 3-4 months. Eggs are laid in clusters each ranging 30-265 eggs. Eggs hatch in about a week and young larvae fall off the leaves and enters the soil in search of roots where feeding occurs. After feeding several months, the larvae pupate in the soil and adults come out of soil and seek a host and mate (Weissling et al., 2007). Depending on the temperature, adults can emerge year round, however, primary emergence of adults can be seen from May-November in central
Graham, J.H., D.B. Bright and C.W. McCoy. 2002. Phytophthora-Diaprepes weevil complex: Phytophthora spp. relationship with citrus rootstocks. Plant-Disease, 87: 85-90.
Weissling, T.J., J.E. Pena, R.M. Giblin-Davis and J.L. Knapp, Jr. 2007. Diaprepes root weevil, Diaprepes abbreviatus (Linnaeus) (Insecta: Coleoptera: Curculionidae).
Woodruff, R.E. 1964. A Puerto Rican weevil new to the