Jansonius
Jansonius is a genus of leaf beetles in the subfamily Eumolpinae. It is found in Chile and Argentina. It was formerly placed in the tribe Adoxini, section Myochroites, but is now placed in Nodinini, section Metachromites.
Species
The genus contains at least one valid species:Jansonius aeneusDia patagonica Boheman, 1858, also from Chile, was placed in the genus by Jan Bechyné in 1953, but as the type is apparently lost or destroyed, this species is considered incertae sedis in Eumolpinae by Askevold & LeSage.
Several additional species were described in or assigned to the genus by Jan Bechyné from other countries in South America, though these may not belong to the genus according to Askevold & LeSage :Jansonius boggianii – Paraguay, ArgentinaJansonius pubescens Bechyné, 1955 – ParaguayJansonius scolytinus Bechyné & Bechyné, 1961 – BrazilJansonius vigiensis Bechyné & Bechyné, 1961 – Brazil