The preliminary observation on bionomics of Xylotrechus robusticollis.
Author of the article:GUO Zhong-Hua，ZHANG Ji-Ping，JIA Yan-Mei
Author's Workplace：(Shaanxi Institut e of Sand Control,Yulin,Shaanxi 719000,China)
Key Words：Xylotrechus robusticollis; biomonics; natural ene my; Zombrus siortedti
Abstract：Xylotrechus robusticollis(Pic) is the primary pest o f wood in Yulin Region,Shaanxi Province.It occurs one generation in two years a nd overwinters as larva.The imago period is from the first ten days of July to the first ten days of August.Zo