© Koninklijke Brill NV, Leiden, 2013 DOI 10.1163/1876312X-04401004 Insect Systematics & Evolution 44 (2013) 93–106 brill.com/ise Ntaolaltica and Pseudophygasia, two new fea beetle genera from Madagascar (Coleoptera: Chrysomelidae: Galerucinae: Alticini) Maurizio Biondi and Paola D’Alessandro* Department of Life, Health and Environmental Sciences, Section of Environmental Sciences University of L’Aquila, 67100 Coppito-L’Aquila, Italy *Corresponding author, e-mail: paola.dalessandro@univaq.it Published 15 April 2013 Abstract Ntaolaltica antennata gen.n. and sp.n. and Pseudophygasia gen.n. from Madagascar are described. Te following new combinations are established: Phygasia ambohitsitondroensis Bechyné, 1952 (= Pseudophygasia ambohitsitondroensis (Bechyné, 1952) comb.n.); Phygasia analis (Harold, 1877) (= Pseudophygasia analis (Harold, 1877) comb.n.); Phygasia apolinaria Bechyné, 1952 (= Pseudophygasia apolinaria (Bechyné, 1952) comb.n.); Phygasia denotata Bechyné, 1952 (= Pseudophygasia denotata (Bechyné, 1952) comb.n.); Phygasia freyi Bechyné, 1964 (= Pseudophygasia freyi (Bechyné, 1964) comb.n.); Phygasia furax Bechyné, 1952 (= Pseudophygasia furax (Bechyné, 1952) comb.n.); Phygasia goudoti (Harold, 1877) (= Pseudophygasia goudoti (Harold, 1877) comb.n.); Phygasia bicolor Weise, 1910 (= Diphaulacosoma bicolor (Weise, 1910) comb.n.); Phygasia scutellaris Weise, 1910 (= Diphaulacosoma scutellare (Weise, 1910) comb.n.). Photomicrographs and scanning electron micrographs of peculiar morphological characters, and distribu- tional data are also provided. Keywords Diphaulacosoma; new combinations; new genera; Ntaolaltica gen.n.; Phygasia; Pseudophygasia gen.n. Introduction In a recent annotated catalogue mostly based on published data (Biondi & D’Alessandro 2010) we pointed out that many details of the composition of the Afrotropical fea beetle fauna still remain incomplete, particularly for Madagascar, which is highlighted by the discrepancy in the numbers of morphogenera and morphospecies in African entomological material preserved in public and private collections and those that have been ofcially described. During our recent visits to some of the most important muse- ums in Europe for the African fauna (MHN, MNHN, NHMB, NMPC), we had the opportunity to examine interesting fea beetle material from Madagascar, in many