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Popillia biguttata (Wiedemann in Wiedemann & Germar, 1821) (Coleoptera: Scarabaeidae: Rutelinae) established on New Guinea? With an illustrated key to Sundaland Popillia Dejean species

. Zootaxa. 4683, 4 (Oct. 2019), 577–588. DOI:https://doi.org/10.11646/zootaxa.4683.4.7.