It was introduced into Taiwan Province Province in the late 1970s, causing the death of nearly 65,438+10,000 coconut trees. It was first discovered on coconut trees in Haikou, Hainan Island, China in June, 2002, and then it caused great harm to palm plants in Hainan.
In that year, 365438+100000 coconut trees suffered, and the epidemic area was 65438+100000 mu. By the end of August, 2004, 520,000 mu of Palmae plants in 8 cities and counties in the province were affected, and the number of affected plants reached 8 10000. The output of damaged coconut trees and betel nuts decreased by 60%-80%.
Quarantine methods of Brontispa longissima;
Host seedlings were not imported from countries and regions where Brontispa longissima distributed. If it needs to be imported, it needs to be strictly quarantined: mainly check whether there are harmful symptoms of Brontispa longissima and its adults and larvae on the leaves and back of unexpanded and newly expanded heart leaves.
At the same time, check whether the loading containers such as containers and cartons have this bug. If it is not found at the scene, cut off the diseased leaves and go back to the room to check whether there are eggs.
Because Brontispa longissima only feeds on undeveloped and newly developed heart leaves, and both oviposition and pupation are in the folded mesophyll, it is possible to cut off the diseased and infected heart leaves and burn them to reduce the export volume.
Refer to the above? Baidu encyclopedia-Brontispa longissima