a)         Lepidopterans                 1. Cabbage semi-looper (Lepidoptera: Noctuidae)        2. Tobacco caterpillar: Spodoptera litura Hubner (Lepidoptera: Noctuidae)    BACK

 

3. Gram pod borer: Helicoverpa armigera Hubner (Lepidoptera: Noctuidae)

 

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Distribution: Cosmopolitan in distribution

 Text Box: Helicoverpa armigera

Host range:    Polyphagous,  infests over 100 host plants including potato, chickpea, cotton, caster, tomato, cowpea, millets, linseed, tobacco, safflower, pigeon pea, okra, carnation etc.

 

 

 

 

 

 

 

 

 

Nature of damage and symptoms:

•         Damage is caused by the larva

•         Feed on the foliage, flowers, buds and fruits.

•         Small green fruits are preferred

•         Single larva can destroy many fruits

•         The damage is more pronounced during March to June

Identification:

•         Eggs are yellowish white, ribbed, dome shaped and 0.4-0.5 mm in dia.

•          Newly emerged larvae are yellowish white whereas older can be of many colours depending upon the food they consume. Full grown caterpillars are 40-48 mm long with whitish and dark gray longitudinal stripes.

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Adults are medium sized stoughtly built moths.

•         Forewing is light yellow in males and brown in females.

•         On the apical margin of forewings, wavy lines in the form of light black band are visible and a black spot appears on the upper side of the wing.

•         On the tip of the abdomen there is a tuft of hairs in case of females.

 

 

 

 

 

 

 

        Eggs of H. armigera                                                Larva of H. armigera

 

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