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Angoumois Grain MothSitotroga cerealella
ALL PRAISE IS DUE TO ALLAH , THE LORD OF THE WORLDS, THE [ONE WHO] SUSTAINS THE HEAVENS AND EARTHS
Made by:Arslan AhmadUniversity of Agriculture FaisalabadSub Campus Burewala, [email protected]
Known Facts About Pest• Distribution is world-wide.• Important pest of stored grains.• Damage is caused by the larvae only.• The larvae feeds on the grain kernels while the adult
feeds on nectar, honey, water etc.• Attack all types of cereal grains.
Some Cereal Grains Attacked By AGM
Wheat Oat Barley
Maize Sorghum
Identification• Full grown larva is about 5mm long.
• Body color of larva is white with yellow-brown head.
• The adult is greyish-yellow, brown or straw-colored moth.
• Wing expanse of adult moth is 10-12mm.
• Most characteristic feature of this pest is the presence of the narrow pointed wings fringed with long hairs, prominent along the posterior margin.
Life CycleEgg
Larva
Pupa
Adult
• Breeding starts from April – October
• Mating takes place within 24 hours after emergence as adult and female start laying eggs.
• The eggs are laid singly or in batches on or near the grain.
• Eggs are laid within a week after mating.
• The female adults have longer life span than the males.
• There are several generations in a year.
Eggs are small & white when freshly laid, later turns reddish
150 eggs are laid (ave.)
I. P. = 4 – 8 days in summer
Larval Stage last about 3 weeks
The larva before pupation Constructs a silken cocoonIn a cavity made during feeding
H. P. = 6 days(ave.) at 27.5°Ϲ
Total Life Cycle 51 Days
Adult emerges by pushing aside the seed-coat thatcovers the exit
Adults againmate afteremergence
Damage• Maximum damage is caused in monsoon season.
• The larva soon after emergence bores into the grain and feeds on it’s contents.
• As it grows, it extends the hole which partly gets filled with pellets of excreta.
• The larva usually eats 30 – 50% of the grain content, but sometimes entire grain is consumed.
• After infestation the grains give out an unpleasant smell and present an unhealthy appearance because each grain gets covered by scales shed by the moth.
• In a heap of grain, upper layer is most severely affected.
Larva pupates within the grain
DamageUnpleasant appearance due to infestation
Holes in grainsDamage caused by this pest
Damage caused by this pest
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