MySheen

The occurrence regularity of Robinia pseudoacacia valley moth?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The occurrence regularity of Robinia pseudoacacia valley moth: Shandong occurs for 2 years a year, overwintering with different instar larvae of the second generation in the trunk tunnel. It was harmful to active feeding in late March of the following year, and the peak period of Eclosion was in the middle of May. Most of the eggs lay in the wounds of the branches or in the cracks in the bark, and the first generation of larvae began to hatch in mid-June. The newly hatched larvae move lively and sneak into the subcutaneous phloem and cork cortex, showing a longitudinally irregular tunnel. The injured site proliferated and expanded, and the bark warped and cracked. The mature larvae begin to pupate in the middle of July, the adults can be seen in the last ten days, and the emergence peak is in the middle of August.

The occurrence regularity of Robinia pseudoacacia valley moth: Shandong occurs for 2 years a year, overwintering with different instar larvae of the second generation in the trunk tunnel. It was harmful to active feeding in late March of the following year, and the peak period of Eclosion was in the middle of May. Most of the eggs lay in the wounds of the branches or in the cracks in the bark, and the first generation of larvae began to hatch in mid-June. The newly hatched larvae move lively and sneak into the subcutaneous phloem and cork cortex, showing a longitudinally irregular tunnel. The injured site proliferated and expanded, and the bark warped and cracked. The mature larvae began to pupate in the middle of July, the adults could be seen in the last ten days, the peak period of Eclosion was in the middle of August, the hatching period of the second generation eggs and larvae was from the first ten days of August to the middle of September, and the larvae overwintered one after another in late October.

 
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