Kozár, F. 1999 Activity and selectivity of pheromone traps of Diaspididae (Homoptera: Coccoidea).. 51st International Symposium on Crop Protection Ghent, Belgium

Notes: [Conference held in Ghent, Belgium on 4 May 1999.] Abstract only. In central Europe, the pheromone compounds of Quadraspidiotus perniciosus and Pseudaulacaspis pentagona are used for monitoring and for quarantine survey. The pheromone compounds of Q. perniciosus are very efficient collecting the males of this pest as well as for collecting the most important introduced parasitoid Encarsia (Prospaltella) perniciosi. However, they were not attractive for the local parasitoid (Aphytis proclia). In the last years we found in these pheromone traps high numbers of males of other scale insect species (Q. zonatus). This shows that the compounds are not selective, as was earlier believed, which causes problems in the identifications of scale insect males caught. The pheromone compound of P. pentagona is very efficient collecting the males of this pest. However, it was not efficient for collecting the most important introduced parasitoid Encarsia (Prospaltella) berlesei. The compound was not attractive to the males of Unaspis euonymi, Carulaspis juniperi and Q. perniciosus. The pheromone extract of Epidiaspis leperii was attractive to the males as well as the parasitoid Aphytis mytilaspidis.