Forecasting Peak Seasonal Capture of Sugar beet Root Maggot (Diptera: Otitidae) with Sticky-Stake Traps in Idaho

Seasonal capture of adult sugar beet root maggots, Tetanops myopaeformis (Roder), was monitored with Blickenstaff & Peckenpaugh sticky-stake traps at 83 commercial sugar beet fields in Idaho during 1980-1984. Published models of postdiapause larval development were inadequate predictors of adult £ light activity and capture. Forecasts of peak adult capture were improved by accounting for larval development before 1 April and for suppression of adult £light activity when maximum daily air temperature was