(The cabbage looper) – is found throughout the world where crucifers are cultivated. They are
identified by their looping behavior, in which they arch their body in a loop when they crawl.
Life cycle :
From egg to adulthood, the cabbage looper's life cycle is generally 24–33 days long.
Egg : Eggs are generally yellow-white in color, dome-shaped, and patterned with ridges.
They are 0.6mm in diameter and 0.4mm in height, and they are usually laid singly on the underside of leaves.
In one day, a female can lay 40-50 viable eggs. Viable eggs hatch after about three days.
Larva : larvae are green in color with a white stripe on the side. After hatching, they are
white and hairy, but eventually turn green and lose the hair, leaving only a few bristles. Larvae are generally
3–4 cm long, and can have four to seven instars within 9–14 days.
Pupa : This stage can last 4–13 days, depending on the temperature. Male pupae are slightly larger than female.
Adult : The adult form is a moth with gray-brown front wings and light brown back wings. It is about 2.5 cm
long and has a wingspan of 3.8 cm. Adults spend their days protected by their begin activity 30 minutes before
sunset. Males can be distinguished from females by light brown hairs that lie flat against their abdomen.
Host plants :
The cabbage looper has been reported damaging broccoli, cabbage, cauliflower, mustard, radish.
Other vegetable crops include celery, cucumber, lima bean, lettuce, pea, pepper, potato, snap bean, spinach,
squash, sweet potato, tomato and watermelon. And field crops such as cotton and tobacco.
Cabbage loopers are leaf feeders, and in the first three instars they confine their feeding to the
lower leaf surface, leaving the upper surface intact. The fourth and fifth instars chew large holes,
and usually do not feed at the leaf margin. In the case of cabbage, however, they feed not only on
the wrapper leaves, but also may bore into the developing head.
ETL for Spodoptera ni is 8-12 No’s of moths per trap per day.
Use 8-10 Nos Pheromone Traps per acre from one week crop stage to control pest at early stage.
Trap canopy should be placed one feet above crop canopy to achieve optimum catch.
Recommended trap model:
Phero-Sensor-SP™ or Phero-Sensor - BP™
Recommended for: Cabbage, Cauliflower, Watermelon, Mustard and Cucumber.