In arabica coffee estates at Kahuguni and Magogoni, Kenya, female giant looper moths, Ascotis selenaria reciprocaria (Wlk.), rested on coffee tree stems at 60·7 ± 9·8 cm above ground and males at 65·7 ± 6·6 cm; most eggs were laid less than 122 cm above ground. In the laboratory, females laid on average 693 eggs in 5·3 batches; peak oviposition and fertility were 2–3 days after emergence. Life span was 8·3 days for females and 10·4 days for males; at death females contained 1·4 spermatophores each (1·1 in field-collected specimens). It is concluded that hand-picking of moths will have little control value unless done the day after emergence, but that tree-banding with residual insecticide 122–130 cm above ground would kill 90% of the emerging larvae.