Red palm weevil Rhynchophorus
ferrugineus, has different common names such as coconut weevil, Asiatic palm
weevil, or Indian red palm weevil. It is a serious pest for coconut in some
Asiatic regions and an important pest for the date palm in the Near East. It was
recorded in some Arabian Gulf States during eightieths and then reported as a
destructive insect for date palms in Egypt at 1992 (Saleh, 1992; Cox, 1993).
The red palm
weevil Rhynchophorus ferrugineus Oliv. (Curculionidae : Coleoptera) is an
economic pest of coconut causing damage and often killing the palm in its prime
of life. The adult is a reddish-brown weevil with a prominent snout which
measures about 35 mm in length. Eggs are laid at the bole region. The hatched
grubs burrow into the trunk and feed on the tissues of the stem. These grubs
pupate inside fibrous cocoons and emerge as adults. The presence of small holes
at the leaf scars, oozing out of a reddish-brown fluid, extrusion of fibers from
these holes and slightly audible sound of the feeding activity are the symptoms
of infestation. The pupation and emergence within the same stem allow successive
generations within it. This pattern leads to excavate large cavities within the
same stem. This dangerous pest invaded Egypt during November 1992 causing some
economically serious damages to the date palm trees at El Sharqia and Ismailia
Governorates. Now, up to 5 Governorates suffered from this pest in Egypt.
Red palm weevil
Rhynchophorus ferrugineus Oliv. is a serious pest attacking different
species of palm trees (e.g. date palm, coconut palm and royal palm). This pest
has been reported in Asia, Australia, Philippines, and Thailand as early as 1962
(Mathen and Kurian 1962, Wygner, 1962). Lever (1969) advocated that the origin
of red palm Weevil is tropical Africa, although Abraham et al. (1975)
claimed that its origin is India, Later the weevil was recorded in India,
Serilanka, Indonesia, Burma, Punjab and Pakistan (see also: Lakshmanan et al.,
1972; Muthuraman, 1984). The weevil was reported in United Arab Emarates at
1985, in Saudi Arabia at 1987 and in Egypt at 1992 (Cox, 1993).
How people control and deal with RPW:
Survey carry out and depend on the number of the trees. Well trained agronomists
offer the main data to evaluate control applications depending on the percent
and rate of infestation.
Agricultural quarantine enforced among infested and clear governorates to
prevent the distribution of this pest.
Control using different chemical insecticides Such as Diazinon, profinfos and
fibronil had been achieved by regular spray, injection of infested trees and
offshoot treatments. In addition gas treatmen using phosphine gas and soil
treatment using granular insecticides are also used. Biological control methods
gave some results.
traps are promising method to minimal the numbers of the pest offered by the
ministry of Agriculture and used in all infested areas.
of offshoots and treat the tree with chemical prevent the infestation.
Intensive research programs, scholarships, projects and information exchange are
encourage by Prof. Dr. Youssef Wally, Deputy Prime Minister & Minister of
Agriculture and Land Reclamation to face
this dangerous pest.
Gulf area India
Iran Jordan Spain
the Mediterranean Area
the Middle East
RPW World Report