Red Weevil in Spanish Palm Trees

Gardening Forum - Discuss the red palm tree weevil

The Red Weevil has been making its way to the western world since the mid 80s. It was captured in Egypt in 1992 and then seen in Spain in 1994, it is thought that the Red Weevil made its way to Spain from Egypt by way of human intervention, by being transported on date palm trees.

The Red Weevil is starting to cause havoc on Palm Trees across the Spanish region, unfortunately the Red Weevil's devastating effects are only noticeable when it is too late and the Palm Tree is dead. The late detection of the weevil constitutes a serious problem in the fight against the Red Weevil pest. Although, much research has been carried out, no safe techniques for early detection of the pest have been found.

Despite the attempts to kill these pests more than one thousand Phoenix Palm Trees have been killed and it has cost millions of euros in damage and is continuing to spread.

The Red Weevil originated in southern Asia and Melanesia, where it is a serious pest of coconuts. In 1985 the Red Weevil had reached the eastern region of the Kingdom of Saudi Arabia, spreading to the whole of the United Arab Emirates and into Oman. It was recorded in Iran in 1990 before being discovered in Egypt at the end of 1992, it is also found in Israel, Jordan and the Palestinian Authority Territories.

The red palm weevil is a member of Coleoptera: Curculionidae. The male and female adults are large reddish brown beetles about 3 cm long and with a characteristic long curved rostrum; with strong wings, they are capable of undertaking long flights.

It is the larvae that produce the damage to the palm. Adult females lay about 200 eggs at the base of young leaves or in wounds to the leaves and trunks; the grubs feed on the soft fibers and terminal bud tissues. They reach a size of more than 5 cm before pupation. Just before they pupate, they move towards the interior of the palm making tunnels and large cavities. They can be found in any place within the palm, even in the very base of the trunk where the roots emerge.

Pupation occurs generally outside the trunk, at the base of the palms. The larva pupates in a cocoon made of brown dried palm fibres.

Have you found this red palm weevil in any of your palm trees - let me know your story, I would love to hear from you. We are running a discussion about Red Palm Tree Weevils on our gardening forum.