How to control the ginger skipper? These methods are simple and effective

Morphological characteristics Adult: body and wings dark brown, forewings with 5 grayish-white spots, the spot located below the discal cell is larger. The center of the hindwing has one large white spot. Egg hemispherical, flat at the top, with the rim in contact with the leaf surface forming a brim shape, slightly wrinkled, with more than 50 raised fine striations on the side. Larva grass-green, after the 3rd instar two nearly crescent-shaped yellow spots appear on both sides of the dorsal line of the sixth abdominal segment, spiracles white. Pupa elongated spindle-shaped, yellow-green, body covered with white waxy powder.

2. Life habits and occurrence pattern

The ginger skipper occurs 3 to 4 generations a year, overwintering as pupae in grass clumps or dead leaves. In early April of the following year they emerge and lay eggs. Larvae begin to cause damage in mid-May, with the most severe damage from July to August. Female ginger skippers lay eggs singly on the underside of leaves, each female can lay 20 to 34 eggs. After hatching, the larvae crawl to the leaf edge, spin silk to bind the leaves, and after the 3rd instar they can roll the leaves into tubular leaf bracts, and move between plants to cause damage in the morning and evening. Mature larvae pupate on the underside of leaves.

3. Control methods

(1) Clean the garden and field: After harvesting ginger, promptly clear away the pseudostems and leaves, burn them or compost them to reduce the source of insects.

(2) Remove insects: manually remove the insect bracts.

(3) Chemical control: seize the early larval stage for spraying control; 25% quinalphos emulsifiable concentrate at 800 to 1000 times dilution, or 20% fenvalerate emulsifiable concentrate at 2000 times dilution can be sprayed, with good results.