Control of Coffee Bark Moth, a Disease and insect of Garden plants

Morphological characteristics

The adult is gray-white, 15-28mm in length and 25-55mm in wingspan. Male moth antennae are double pectinate in the middle and lower part, and the ends are linear. There are 3 pairs of blue spots on the back of the chest. The abdomen is white with black stripes. The front wing is white, translucent, covered with bluish blue spots of different sizes, and there are 8 bluish blue spots on the outer edge of the hindwing. Female moths are generally larger than male moths, with filamentous antennae. The eggs are round and yellowish. The body length of the last instar larvae is 30mm. The head is dark brown, the body is fuchsia or crimson, and the tail is light yellow. There are many granular protuberances in each node, and there is a white hair on it. The pupa is cylindric, reddish brown, 14-7mm long, with serrated transverse bands on the back and 12 short thorns at the tail end.

Occurrence regularity

One or two generations occur in one year. Overwintering with larvae in the injured part. The following spring turned to eat the new stem. Pupation begins in the first ten days of May, the pupal stage is 16-30 days, the emergence in late May, and the life span of adults is 3-6 days. Mating and laying eggs within 1-2 days after Eclosion. The eggs are laid at the mouth of the Eclosion hole, and several eggs are formed into blocks. The egg period is 10-1 days. It hatched in late May, and after hatching, the stem was drilled upward, and the defecation hole could be seen outside. Have the habit of turning trees to harm. The larval duration is more than one month. In the first ten days of October, the larvae pupate over the winter. Bracon sp. Parasitic larvae, parasitic rates were 9.1-6.8%. Ants can prey on larvae. The parasitism rate of Fusarium moniliforme was 16.6-9.5%. The virus can also parasitize larvae, but the parasitism rate is low. Prevention and cure method

(1) Agricultural prevention and control.

Build mixed forest, strengthen tending, enhance tree potential and reduce damage; pay attention to forest hygiene, remove fallen leaves on the ground, cut off injured branches, and concentrate on burning.

(2) protect to make use of natural enemies. Such as releasing parasitic wasps and so on.

(3) Pesticide control.

During the larval incubation period in the first and middle of June, 50% fenitrothion 1000 solution was sprayed once every 7 days for 2 times.

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