Deroparia reticulata (Munro), Euryphalara barnardi (Bezzi), E. extensa Munro, comb. n., E. sp. nr. extensa, E. mecistocephala (Munro) and Xenodorella mira Munro are considered to belong to a closely allied group of genera, the Euryphalara group, placed in the tribe Platensinini. The species occur mainly in Namibia and appear to be associated with Monechma (Acanthaceae). Keywords: Deroparia, Euryphalara, southern Africa, Taxonomy, Xenodorella.