Four new species of the lanternfly genus Zanna Kirkaldy, 1902 from Cambodia and Vietnam (Hemiptera: Fulgoromorpha: Fulgoridae)

Four new species of Zanna Kirkaldy, 1902 are described: two from Cambodia, Z. chartieri Constant sp. nov. from Tatai in Koh Kong Province and Z. limbourgi Constant sp. nov. from Phnom Aural Wildlife Sanctuary in Kampong Speu Province and Kbal Spean in Siem Reap Province, and two from Vietnam: Z. bidoupana sp. nov. from Bidoup-Nui Ba National Park in Lam Dong Province and Z. kusamae sp. nov. from Dong Nai Biosphere Reserve in Dong Nai Province. Illustrations of the holotypes and male genitalia, photographs of live specimens and nymphs, a distribution map and host plants records are provided. The type of Zanna chinensis (Distant, 1893) is also illustrated for comparison. The genus Zanna now contains 37 species.