Obsah
The author has accomplished a revision of Leiobunum rupestre (Herbst) found in Czechoslovakia up to now and of some specimens from adjoining countries (Poland, Rumania, Hungary, West Germany) considered as L. rupestre . He has found out that L . rupestre lives in the western part of Czechoslovakia and West Germania, whilst in the Carpathian part of the territory, as well as in Poland, Rumania and Hungary occurs L . glabrum L . Koch, which is an older synonym of Nelima glabra (L . Koch) and Leiobunum tisciae Avram . Some ecological data and differential diagnosis of L. ruprestre and L. glabrum are presented.