Phenology of P. apollo in different altitudinal ranges, based on citizen science data. The box-plots represent the distribution of dates, expressed as “days of the year”. The medians for the altitudinal ranges are: 183 (02 July) (800–1,200 m a.s.l.); 206 (25 July) (1,201–1,600 m a.s.l.); 212 (31 July) (1,601–2,000 m a.s.l.)

  Part of: Campanaro A, Hardersen S, Redolfi De Zan L, Antonini G, Bardiani M, Maura M, Maurizi E, Mosconi F, Zauli A, Bologna MA, Roversi PF, Sabbatini Peverieri G, Mason F (2017) Analyses of occurrence data of protected insect species collected by citizens in Italy. In: Carpaneto GM, Audisio P, Bologna MA, Roversi PF, Mason F (Eds) Guidelines for the Monitoring of the Saproxylic Beetles protected in Europe. Nature Conservation 20: 265-297.