Mechanical control of Blue pine defoliator Biston regalis Moore (Geometridae, Lepidoptera) in Murree and Azad Kashmir
Mechanical control of Blue pine defoliator Biston regalis Moore (Geometridae, Lepidoptera) in Murree and Azad Kashmir
M. Iqbal Ahmad, Hanif Gul and Wali-ur-Rehman
ABSTRACT
Intro: For the first time Biston regalis Moore appreared in epidemic form in the blue pine (Pinus wallichiana) forests of Murree and Azad Kashmir in August, 1980, causing defoliation over about 3175 acres. The insect has an annual life cycle with moths emerging in May. These have brownish grey wings with thick black and white strips, exhibiting close mimicry with tree trunks. They hide
under plant debris during day and become active at dusk and dawn. Moths spend the night sitting on tree trunks and on fresh needles.
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September 1981
Vol. 31, Iss. 3
