Cydia fagiglandana (Zeller) (Lepidoptera: Tortricidae) is a carpophagous insect which affects the quality and
viability of the fruits of beech, oak and chestnut trees. The majority of the works on this species in holm oak woods
dealt with assessing its damages. No investigations have yet been performed on the spatial distribution of this pest,
although this element is one of the key features to take in account in order to develop proper integrated management
programs. The present study, performed during a four years period in an exploited holm oak forest area in Southern
Spain, investigated the spatial distribution of C. fagiglandana integrating classic methods based on dispersion rates
and distribution fitting together with the elaboration of population density maps based on GIS. Our results showed
that the infestation rate progressively decreased from 0.339 in 2001 to 0.102 in 2004. Density maps for C. fagiglandana
also show an heterogeneous and aggregated distribution of this insect and a spatio-temporal stability in this area. It is
concluded that during the four years of the study inter-specific competition with the weevil Curculio elephas was the
factor that most affected the spatial distribution of C. fagiglandana in the experimental plot
