ABSTRACT. – Phoracantha recurva Newman, 1840 is well known as one of the most invasive wood-boring pest through the world. Its appearance in North Eastern Morocco was reported for the first time in 2014, causing huge damage to Eucalyptus gomphocephala plantations in this region. With the aim to prevent problems caused by such insect, a study on phenology of adults stages was conducted by trapping in two localities (coastal area of Saïdia, green curtain Oujda-Taourirt) in 2013 and 2014, under natural conditions. Trapping was complemented by monitoring adults with emergence boxes in laboratory conditions. Results evidenced that this longhorn has a monovoltine cycle in Saïdia while it is polyvoltine in the green curtain Oujda-Taourirt.