Studies in the Palaearctic and Oriental Agrilus (Coleoptera, Buprestidae) IV
Authors: JENDEK EDUARD 
Published: March 2019

The following new taxonomic and nomenclatural acts are provided: New revalidated name: the name nagaoiNakane 1983 is resurrected from the synonymy of A. maculifer Saunders 1873 as a valid specific name of Agrilusnagaoi. New synonyms: 47 new synonyms are proposed in the genus Agrilus: annoi Baudon, 1968 (synonym ofnavarrei Baudon, 1965); biasoni Baudon, 1968 (synonym of shaumaae Descarpentries & Villiers, 1963);brigitteae Baudon, 1968 (synonym of cochinchinae Obenberger, 1924); canidius Descarpentries & Villiers, 1963(synonym of coloratus Kerremans, 1894); champasak Jendek, 2000 (synonym of ardoini Descarpentries &Villiers, 1963); chounramanyi Baudon, 1965 (synonym of auripilis Deyrolle, 1864); cuneatus Jendek, 2009(synonym of palii Baudon, 1968); damoiselli Baudon, 1968 (synonym of sikkimensis Obenberger, 1928); deuveiBaudon, 1965 (synonym of perlisensis Fisher, 1936); emeritus Descarpentries & Villiers, 1963 (synonym ofperlisensis Fisher, 1936); favieri Baudon, 1961 (synonym of cochinchinae Obenberger, 1924); forquerayi Baudon,1968 (synonym of inops Kerremans, 1892); gagneuxi Baudon, 1968 (synonym of beatissimus Descarpentries &Villiers, 1963); gardneri Théry, 1928 (synonym of mixtus Kerremans, 1892); giraudi Baudon, 1965 (synonym ofbirmanicus Kerremans, 1892); goichetae Baudon, 1965 (synonym of rivalieri Descarpentries & Villiers, 1963);gouyei Baudon, 1965 (synonym of inops Kerremans, 1892); haniquei Baudon, 1965 (synonym of weyersiKerremans, 1900); jarrensis Baudon, 1968 (synonym of coloratus Kerremans, 1894); kandyanus Théry, 1904(synonym of repercussus Kerremans, 1893); korbi Abeille de Perrin, 1897 (synonym of auricollis Kiesenwetter,1857); laurenconi Descarpentries & Villiers, 1963 (synonym of auroapicalis Kurosawa, 1957); lebisiDescarpentries & Villiers, 1963 (synonym of ardoini Descarpentries & Villiers, 1963); legrosi Descarpentries &Villiers, 1963 (synonym of tsacasi Descarpentries & Villiers, 1963); leguayi Baudon, 1965 (synonym of simplexKerremans, 1894); lessei Descarpentries & Villiers, 1963 (synonym of colasi Descarpentries & Villiers, 1963);lindryi Baudon, 1968 (synonym of loupyi Baudon, 1968); lloydae Baudon, 1968 (synonym of miwai Obenberger,1936); lukesi Obenberger, 1936 (synonym of modicus Kerremans, 1892); minusculus Marseul, 1866 (synonym ofotiosus Say, 1833); morelae Baudon, 1968 (synonym of milo Obenberger, 1936); moreli Baudon, 1968 (synonymof coomani Bourgoin, 1925); mouricouae Baudon, 1965 (synonym of inops Kerremans, 1892); nginni Baudon,1968 (synonym of cochinchinae Obenberger, 1924); parizotae Baudon, 1968 (synonym of syrphus Descarpentries& Villiers, 1963); roscidulus Abeille de Perrin, 1897 (synonym of elegans Mulsant & Rey, 1863); rousselataeBaudon, 1968 (synonym of lacroixi Obenberger, 1936); ruteri Descarpentries & Villiers, 1963 (synonym ofjarrigei Descarpentries & Villiers, 1963); samyi Baudon, 1968 (synonym of suturaalba Deyrolle, 1864);sedonensis Baudon, 1968 (synonym of sommailae Baudon, 1965); siva Obenberger, 1916 (synonym of repercussusKerremans, 1893); souvannavongsi Baudon, 1968 (synonym of perlisensis Fisher, 1936); syrdarjensis Obenberger,1928 (synonym of vaginalis Abeille de Perrin, 1897); theodasi Baudon, 1968 (synonym of simoninaeDescarpentries & Villiers, 1963); thevadensis Baudon, 1968 (synonym of truncatipennis Descarpentries & Villiers,1967); tokatensis Obenberger, 1924 (synonym of auricollis Kiesenwetter, 1857); ukrainensis Obenberger, 1936(synonym of croaticus Abeille de Perrin, 1897).Lectotype designations: 43 lectotype designations are proposed (types are cited in the original combination and rank):Agrilus ambiguus Kerremans, 1895; A. amphion Obenberger, 1935; A. ampliatus Kerremans, 1900; A. anachlorusObenberger, 1924; A. angustulus variety bicoloratus Abeille de Perrin, 1893; A. atomus Kerremans, 1914; A. atratulus Obenberger, 1924; A. balnearis Kerremans, 1914; A. belides Obenberger, 1936; A. brahma Obenberger, 1916; A.