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.

        

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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