Coconut rhinoceros beetle in Solomon Islands: a tale of two invasions

Abstract Coconut rhinoceros beetle ( Oryctes ; CRB) was discovered in 2015 a small outbreak Honiara, Guadalcanal, Solomon Islands. This the first record of CRB from Islands and response plan prepared. An awareness programme launched where sightings were confirmed, delimitation surveys carried out. Following launch programme, later 2015, also reported Shortland Western Province. Other islands surveyed to 2020. If presence beetles collected analysed for haplotype classical biological control agent, nudivirus (OrNV). A distribution map timeline invasion developed. The initial populations belonged two distinct haplotypes: CRB-G (clade I ) Honiara CRB-S II) Despite measures, by 2020 had spread eight provinces seven provinces. co-occur Guadalcanal Malaita In 2019, OrNV detected field has since Island. both cases virus co-occur. areas remain OrNV-free. haplotypes appear have following patterns air sea movement between point origin (CRB-G Islands) other islands/provinces.