Preliminary studies on bionomics and control of Megastigmus cryptomeriae.
Megastigmus cryptomeriae was recently found severely damaging seeds of Cryptomeria japonica in Zhejiang Province, China. Observations on its bionomics and control tests in 1986-88 are reported. A single generation was observed each year, with larvae overwintering inside the seed. Eclosion occurred in mid-April to late May. Fumigating using aluminium phosphide [phosphine] produced effective control. Contact poisoning was also tested.