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Survey For The Important Natural Enemies Associated With Insect Species
Pseudococcidae And Their Distribution
Nadia Al-Khateeb(1) and Louai Asslan(2)
(1)Directorate of Agriculture And Agrarian Reform of Lattakia,
Lattakia Center for Rearing Natural Enemies, P.O. Box 2012, Lattakia,
Syria
E-mail: nadia@arabscientist.org
(2)Faculty
of Agriculture, Damascus University, Damascus, Syria
E-mail: louai@arabscientist.org
Abstract
A survey was conducted during 2001-2002 covering Citrus trees at gardens and
open orchards of the Lattakia region along the Syrian Coast, aiming to identify
the most important predators and parasitoids over the Pseudoccocidae and
to study their distribution. The study revealed the presence of the following
predator species: Nephus includens Kirsch (Coleoptera: Coccinellidae),
Sempherobius spp. (Symphyerobidae: Neuroptera) and Chrysopa sp.
(Chrysopidae: Neuroptera). The research results proved that the predator
Nephus includens achieved higher infestation rate than the previous
predators, achieving the highest rate in August with significant differences
(P<0.05), while the highest infestation rate of the predators
(Sempherobius spp. and Chrysopa sp.) was in June. The following
parasitoid species were identified: Clausenia purpurea, Anagyrus
agraensis Saraswat and Pachyneuron sp. The parasitoid Clausenia
purpurea reached the highest infestation rate in July of 86.60% with
significant differences (P<0.05) compared with population rates of other
parasitoids.
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