ACTA ENTOMOLOGICA MUSEI NATIONALIS PRAGAE Published 31.xii.2015 Volume 55(2), pp. 713–743 ISSN 0374-1036 http://zoobank.org/urn:lsid:zoobank.org:pub:7D89DE2D-B56C-4AB0-B1EC-C6C626BC0003 Wallacea, Pistosia and Neodownesia: three distinct genera and their tribal placement (Coleoptera: Chrysomelidae: Cassidinae) Lukáš SEKERKA Department of Entomology, National Museum, Cirkusová 1740, CZ-19300, Prague, Czech Republic; e-mail:
[email protected] Abstract. Wallacea Baly, 1859, Pistosia Weise, 1905 and Neodownesia Gressitt, 1953 are transferred from Gonophorini to Bothryonopini based on absence of setigerous pores on the pronotum, mouthparts situated close to antennal inser- tions, scutellum on the same plane as the elytra, and morphology of the larva. Pistosia, stat. restit., and Neodownesia, stat. restit., are removed from synonymy of Wallacea based on the structure of mouthparts and antennae. Three species are included in Pistosia: P. maculata Weise, 1905, P. terminalis (Baly, 1869) comb. nov. (from Estigmena Hope, 1840), and P. testacea (Fabricius, 1801); all endemic to Sulawesi and neighbouring small islands. Type localities of all three species are specifi ed and Arecaceae is considered as potential host plant family. Three species are also included in Neodownesia: N. sita (Maulik, 1919) comb. nov., N. mediovittata (Gestro, 1920) stat. restit. & comb. nov., and N. rubra Gressitt, 1953, stat. restit.; the fi rst two are transferred from Wallacea and the last two are removed from synonymy with N. sita based on study of type material. Distribution of Neodownesia species is corrected, N. mediovittata and N. sita are reported as new to Thailand. Keys to genera of Bothryonopini and to species of Pistosia and Neodownesia are also given.