| abstract | A new genus and three new species of Tetrathrombiinae (Acari: Johnstonianidae) are described from their larval stages. Two of these species belong to the genus Tetrathrombium Feider, 1955, i.e. Tetrathrombium grootaerti sp.n., from Diaphorus sp. (Diptera), from Thailand and T. brasiliense sp.n. from a megarhine (Culicidae),from Brasil. The third species becomes the type of a new genus Mbandakania congoense g.n. and sp.n., from an unknown host, from Congo-Kinshasa. |