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Ganoderma lucidum pests: bridge-building insects

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, The bridge-building insect of Ganoderma lucidum (to be named) is an important pest of Ganoderma lucidum. l. The morphological and habitual adult is 12 mm long and has a wingspan of 25-28 mm. It is a small gray-black moth. The antennae are filiform, the front wings are triangular, there are 8 black spots on the outer edge, there is a large black spot in the middle of the front edge, and the hind wings are gray-white. The egg is oblate, 0.6-0.7 mm long and 0.4-0.5 mm wide, initially milky white and grayish green before hatching. The body length of mature larvae is 22-25 mm.

The bridge worm (Noctuidea) belongs to the family Geometridae. The bridge-building insect of Ganoderma lucidum (to be named) is an important pest of Ganoderma lucidum.

l. The morphological and habitual adult is 12 mm long and has a wingspan of 25-28 mm. It is a small gray-black moth. The antennae are filiform, the front wings are triangular, there are 8 black spots on the outer edge, there is a large black spot in the middle of the front edge, and the hind wings are gray-white. The egg is oblate, 0.6-0.7 mm long and 0.4-0.5 mm wide, initially milky white and grayish green before hatching. The mature larvae are 22-25 mm long, with black head, cylindrical body, grayish yellow, dark brown protruding on the surface, and yellowish brown markings on the body segments after entering the 4th instar. 3 pairs of chest foot, 2 pairs of abdominal foot, walking in the shape of arch bridge. Pupa 11-14 mm long, spindle-shaped, brown.

The high temperature period from July to August is the peak of insect population, which is the most serious to Ganoderma lucidum. The egg stage is 7-9 days, the larval stage is 23-25 days, the pupa stage is 12 days, and the adult life span is 5-6 days. The adults lie dormant during the day and come out at night, and the female lays eggs at the edge of the lower surface of the lid of Ganoderma lucidum or at the junction of the cap and stalk.

two。 In the damage situation, the larvae eat the fruit layer, resulting in grooves, and more are the tender parts of the outer edge of the mushroom cap, resulting in a lack of engraving, which seriously affects the quality and yield of Ganoderma lucidum.

3. Prevention and cure method

(1) install screen on doors and windows to prevent adults from invading and spawning.

(2) Bacillus thuringiensis (Bt) was killed by mixed spray of 1000 pyrethroids pesticides.

(3) trapping by high voltage electrostatic insecticidal lamp.

 
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