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Pneumia was separated from Pericoma by Vaillant (1971), who called it Satchelliella. Morphological differences between the adults are slight, but the morphology and ecological requirements of the known larvae are quite distinct. It was Duckhouse (1990) who first suggested to treat it as a subgenus, but this has not been widely accepted. Pneumia is used as the genus name by all contemporary European specialists (maybe except for Phil Withers?).