New species and new records of leaf beetles (Coleoptera: Chrysomelidae) from Northern Thailand

Six new species of leaf beetles are described from Thailand: Plagiosterna suwattanae sp. n., Luperocella thailandica sp. n., Paleosepharia magnitarsis sp. n., Paleosepharia rubroapicata sp. n., Pyrrhalta khuntanensis sp. n., Sinoluperoides chenchirae sp. n. The figures of general view and genitalia are given for them and some of related species. The aedeagi for two species previously known only from females, Basilepta subtuberosa Tan, 1988 and Bathseba tristis (Medvedev, 2001), are imaged for the first time. Some diagnostic characters of Bathseba tristis and Pagria vietnamica Moseyko et Medvedev, 2005 have been clarified. The first identification keys to all known species of the genus Luperocella Jacoby, 1900 is proposed. Platycorynus dilaticollis (Jacoby, 1892), sp. resurr. is resurrected from synonyms of P. chalybeus Marshall, 1864, and Luperocella hirsuta Jacoby, 1900, sp. resurr. is resurrected from synonyms of L. albopilosa (Jacoby, 1892). The following 17 species are recorded for the first time from Thailand: Lema mediolineata Jacoby, 1908, Lema semiregularis Jacoby, 1908, Iphimoides pallidulus (Jacoby, 1889), Parascela hirsuta (Jacoby, 1908), Platycorynus dilaticollis (Jacoby, 1892), Basilepta subtuberosa Tan, 1988, Aplosonyx ornatus (Jacoby, 1892), Gallerucida moseri Weise, 1922, Hoplosaenidea aerosa (Laboissière, 1933), Kanarella unicolor Jacoby, 1896, Vietoluperus alleculoides Medvedev et Dang, 1981, Hyphasis limbatipennis Jacoby, 1889, Laboissierea minuta Medvedev, 2009, Podontia lutea (Olivier, 1790), Xuthea orientalis Baly, 1865, Prionispa cheni Staines, 2007, Prionispa opacipennis Chen et Yu, 1962. Bathseba tristis is recorded for the first time from Vietnam.