BANGLADESH JOURNAL OF FOREST SCIENCE
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
The bagworm, Cryptothelea crameri Westwood (Psychidae : Lepidoptera) is an
important pest of many ornamental, horticultural and forest plants in Bangladesh. The
larva feeds on young leaves and tender bark by making and living within a portable bag
of leaves, twigs, barks, spines, etc. The biology, host range, number of generations, and
seasonal abundance of the pest have been dealt with in this paper. Brachymeria sp.
(Braconidae: Hymenoptera) wasfound to parasitize its larva. The pestcould be collected
and destroyed by hand. It could also be controlled by the foliar application ofmalathion
(Malathion 57 EC) at 0.1% concentration.
Kadam (Anthocephalus chinensis (Lam.) Rich ex. Walp.}, a fast growing
multipurpose tree species, is grown in the homesteads and planted in the forest areas of
Bangladesh. The plantations of this species often suffer from the attack of the defoliator,
Arthroschista (=Margaronia) hilaralis Walker (Pyralidae : Lepidoptera). This paper
describes distribution, host plants, nature and impact of damage, life history, number of
generation, population fluctuation, natural enemies and management of the pest. The
pest completes its life cycle within 23.0 + 3.0 days. It has 9-10 generations in a year.
Younger trees, usually 2-5 years of age, were found most heavily infested. The peak
infestation occurred during August-September. Two parasites, Apanteles balteatea Lal.
(Braconidae : Hymenoptera) and Brachytneria lasus Walk. (Chalcididae: Hymenoptera),
caused a mortality of about 40% of the pest population. Application of Thuricide
(Bacillus thnringiensis) 40 WP or Malathion (malathion) 57 EC @ 0.1% concentration was
effective in controlling severe infestation. Hand collection and destruction at the initial
stage of infestation could suppress and provision of overhead orside shade for the tree
could prevent the attack of this pest
Welcome to the Bangladesh Journal of Forest Science (BJFS) – a leading platform for advancing the knowledge and understanding of forest science in Bangladesh and beyond. Established with a commitment to excellence, BJFS serves as a cornerstone for researchers, practitioners, and enthusiasts dedicated to the sustainable management and conservation of forest ecosystems.
