Dichelacera (Dichelacera) corumbaensis n. sp. is described
from two female specimens collected in the urban area of
Corumba city, State of Mato Grosso do Sul. This is one of the
six species of Dichelacera occuring in the state and the
twenty-eighth species of the subgenus known from Brazil. The
head in lateral view, frons, antenna, palpi and wings are
illustrated. A differential diagnosis is given related to D.
rubricosa, D. unifasciata, D. albifasciata and D. fuscipes.