Spodoptera littoralis

AFRICAN COTTON LEAF WORM

ROSQUILLA NEGRA

Order: Lepidoptera
Family: Noctuidae

IN SYNTHESIS…

  • It is a really polyphagous and migratory pest; it affec ts several horticultural crops such as pepper, tomato, melon and other ones such as cereal, alfalfa or cotton.
  • They feed on plant's leaves and the main damages are to the defoliation which are caused by larvae. In the first stages it only affects the epidermis; the adults eat the leaf from the top to the bottom. If they attack the apical sprout the plant becomes blind and would not develop. In some fruits such as watermelon the bark becomes gnawed reducing its commercial value. 
  • Its life cycle is completed between 45 and 55 days approximately, generally it completes from 3 to 6 generations per year. The maximum population level is reached between September and October. 
  • The monitoring with pheromones is a key to detect the insect presence, monitor the population level, determining the pest stage and valuate the risk level. 
  • The use of pheromones for the pest determining allows the phytosanitary treatments' rationalisation by reducing its frequency and choosing the correct application timing. The phytosanitary products to use should always be authorized in accordance to current legislation and be used in a rational way. 

Download Pest Sheet (PDF)

  

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