Identification and early warning of Hypera postica(Coleoptera:Curculionidae),a severe pest of legume cover crops
The alfalfa leaf weevil,Hypera postica,is an important pest of alfalfa crops in China,particularly in major livestock production regions such as Xinjiang,Gansu,and Inner Mongolia.During an investigation of pest causing damage to Astragalus sinicus in Nanling county,Wuhu city,Anhui province,suspected traces of H.postica were discovered in local seed fields,where the stems and leaves of A.sinicus were severely damaged by the insect.To clarify the classification status of this pest,the larvae were collected and brought back to the laboratory for rearing.Preliminary identification of both larvae and adults was conducted based on morphological characters,and then molecular identification was performed using DNA barcodes,confirming the insect as the alfalfa leaf weevil,H.postica.Furthermore,it was found that there were significant intra-species variations within the local population.According to the biological and ecological characteristics of H.postica,a warning has been issued regarding the potential spread of this pest in China and its detrimental impact on cover crops,and insect pest control suggestions were also proposed.
Hypera posticalegume cover cropsmorphological identificationmolecular identificationearly warning and control
万方数据
维普
