Diaprepes Root Weevil

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Diaprepes root weevil, Diaprepes abbreviates (L.) (Coleoptera: Curculionidae), is a large, colorful weevil, 3/8 to 3/4 inch (10 to 19 mm) long, with numerous forms, or morphs, ranging from gray to yellow to orange and black. This weevil is a native to the Caribbean region. It was accidentally introduced into central and south Florida in 1964 in an ornamental plant shipment from Puerto Rico (Woodruff 1968). Since then, it has spread throughout Florida, where it sometimes causes serious damage to citrus trees. In addition, it poses a threat to many ornamental plants and a number of other agronomic crops such as papayas and sweet potatoes. In 2000, Diaprepes became established in a mature citrus grove in the Rio Grande Valley of Texas (Skaria and French 2001). Diaprepes has been intercepted a number of times in California since 1974 in shipments of plants, in truck trailers, and in the cargo holds of aircraft. The weevils found in these interceptions were destroyed. However, the risk of introduction and establishment of this weevil in California is high because if the high volume of host plants brought into California.

Elizabeth E. Grafton-Cardwell
Kris E. Godfrey
Jorge E. Peña
Clayton W. McCoy
Robert F. Luck
University of California Agriculture and Natural Resources