|Three new species of Macrelmis Motschulsky, 1859 are described and illustrated based on adult males from Rio de Janeiro,
Minas Gerais and São Paulo states (southeastern Brazil). A new species groups definition is proposed for the genus,
with a redefinition of the former six (aristeae sp. group, celsa sp. group, isus sp. group, granigera sp. group, milleri sp.
group and striata sp. group) and designation of four new groups (alea new sp. group, amazonica new sp. group, grandis
new sp. group and jureceki new sp. group). The male genitalia of M. clypeata is illustrated for the first time and distributional
maps for all species of the genus are provided.|