Kozár, F., Mazzoni, E., & Cravedi, P. 1997 Comparison of flight periods of male Pseudaulacaspis pentagona in Hungary and northern Italy.. Bulletin OILB/SROP (Sect. Reg. Ouest Palearctique) 20: 43-49.

Notes: Title of conference: Integrated plant protection in stone fruit. Proceedings of the meeting at Zaragoza, Spain, 24-26 September 1996. In recent years the white peach scale, Pseudaulacaspis pentagona, has shown a substantial northward expansion of its geographic range within Europe in a short space of time. A monitoring programme using pheromone traps was carried out in Hungary and in northern Italy during 1991-96. The total number of P. pentagona males collected in traps was much higher in Italy than Hungary. The number of males in Hungary decreased sharply after 1992. Male catches of the first generation were much higher than those of the second generation in both countries. The beginning and the peak of the first flight period in Italy were similar in each year. In Hungary, this phenological stage was much more variable, with the timing of the first generation varying by as much as six weeks between different years. The timing of the start of the second flight period showed large variations in both countries (5-6 weeks). All flight periods started in Hungary about one month later than in northern Italy. Two flight periods were found during each year in both countries.