We examined the type material of Dabulamanzia improvida, D. duci, and Nesydemius polhemusorum, and series of new material from throughout Madagascar that correspond to the concept of each of these three species. Characters used to diagnose the three species vary among series of specimens, and these particular characters cannot be correlated with any specific populations. As a result, we recognize the following new species synonyms: Dabulamanzia improvida Lugo-Ortiz and McCafferty, 1996 [=Nesydemius polhemusorum Lugo-Ortiz and McCafferty, 1998, new synonym; =Dabulamanzia duci Gattolliat and Elouard, 1999, new synonym]. We consider Nesydemius to be a junior synonym of Dabulamanzia Lugo-Ortiz and McCafferty, 1996 [=Nesydemius Lugo-Ortiz and McCafferty, 1998, new synonym].