EN
Rearing of larvae from eggs deposited by adults in laboratory proved Pilosoma pluto Southcott, 1961 (based on larva) and Fessonia papillosa (Hermann, 1804) (based on adult) to be conspecific. Clipeosoma, Southcott, 1961 (larva) and Hirstiosoma (Berlese, 1887) (adult) are congeneric. The validity of Hirstiosoma latreillei (Grandjean, 1947) is confirmed, the larva of Hirstiosoma, ampulligera Berlese, 1887 is described for the first time. Data on egg development and nutrition of postlarval instars are provided. Causal reasoning for the exclusion of Phanolophinae from Smarididae is provided.