Banana butterfly Erionota torus Evans, also known as banana leaf curler. It belongs to lepidoptera, Pteraceae.
【Host】Banana fruit tree.
【Harmful】The larvae roll the banana leaves into leaf buds, and the larvae eat the banana leaves, making the leaves incomplete, affecting the growth results of the plant, resulting in reduced yield.
【Morphological characteristics】Adult insects are 25 to 30 mm long, black brown or tea brown, black brown antennae, most of the near bulge are white; there are 3 nearly square yellow markings of different sizes in the middle of the forewings. The egg is hemispherical, red, with radial white lines on the surface of the egg shell. The larvae are 6 years old, the old mature larvae are 50 to 64 mm long, the body surface is covered with white wax powder, the head is black, and the first and second sections of the carcass are as small as the neck.
Pupae are pale yellowish white, covered with white wax powder, and have a long muzzle.
【Living habits】South China occurs 4 to 5 generations a year. Overwinters in leaf buds with old mature larvae. Adults move during the day, sucking on nectar and laying eggs on new leaves or young stems, and the larvae roll the leaves into a barrel and hide in them. Stick your head out in the morning, evening and on cloudy days
Partial feeding nearby leaves. It usually starts in April and May, and occurs more often from September to October.
【Control method】 (1) Remove dead leaves in the winter garden, burn them centrally, reduce the source of insects, and remove banana leaf insect buds during the growth period. (2) Spray control in the early larval stage. Agent options: 90% dimethoate crystal 800 times liquid plus Bt wettable powder (10 billion live spores per gram) 800 times liquid, 4.5% high efficiency cypermethrin emulsion 1500 times liquid plus Bt wettable powder (10 billion live spores per gram) 800 times liquid.