Wijayathilaka, N.Abayalath, N.Bandara, C.2018-11-092018-11-092014Ceylon Journal of Science (Biological Sciences),43(2):p.83-84https://dl.nsf.gov.lk/handle/1/23930AeshnidaeDragonflyMigratoryOdonataObservation of the Vagrant Emperor (Anax ephippiger, ODONATA: AESHNIDAE) in Sri Lanka after 38 years