西北农林升枚大学 NORTHWEST A&F U时VERSITY Greenbug has either an anholocyclic life cycle in mid-southern China or an autoecious holocyclic life cycle in northern China.Eggs overwinter on wheat seedlings. 88880 Greenbug has either an anholocyclic life cycle in mid-southern China or an autoecious holocyclic life cycle in northern China. Eggs overwinter on wheat seedlings