Metaxyonycha Seabrai
''Metaxyonycha'' is a genus of leaf beetles in the subfamily Eumolpinae. Taxonomy ''Metaxyonycha'' was first named by Louis Alexandre Auguste Chevrolat in 1836, with the spelling "''Metazyonycha''", in Pierre François Marie Auguste Dejean, Dejean's ''Catalogue of Coleoptera''. According to Bousquet and Bouchard in 2013, ''Metaxyonycha'' is an incorrect subsequent spelling of ''Metazyonycha''. However, because the subsequent spelling is in prevailing usage and is attributed to the original spelling's publication, "''Metaxyonycha''" is considered the correct spelling. In some publications for the Neotropical realm, ''Metaxyonycha'' is also known as "''Colaspis''". This was because the Czech entomologist Jan Bechyné had synonymised ''Metaxyonycha'' with ''Colaspis'', after incorrectly assuming the two had the same type species, while splitting the species of ''Colaspis'' listed in the ''Coleopterorum Catalogus'' (a beetle catalog edited by Wilhelm Junk and Sigmund Schenkling) into ...
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