Die hymenopteren Mitteleuropas nach ihren gattungen und zum grossen teil auch nach ihren arten analytisch Otto Schmiedeknecht
Monographia Apum Angliae; Or, An Attempt to Divide Into Their Natural Genera and Families, Such Species of the Linnean Genus Apis as Have Been Discovered in England with Descriptions and Observations. To which are Prefixed Some Introductory Remarks Upon the Class Hymenoptera, and a Synoptical Table of the Nomenclature of the Ext Unknown author
Naturgeschichte, Klassification und Nomenclatur der Insekten vom Bienen, Wespen und Ameisengeschlecht : als der fünften Klasse fünfte Ordnung des Linneischen Natursystems von den Insekten, Hymenoptera : mit häutigen Flügeln Christ, Johann Ludwig, 1739-1813
Monographia Apum Angliae; Or, An Attempt to Divide Into Their Natural Genera and Families, Such Species of the Linnean Genus Apis as Have Been Discovered in England with Descriptions and Observations. To which are Prefixed Some Introductory Remarks Upon the Class Hymenoptera, and a Synoptical Table of the Nomenclature of the Ext William Kirby
Biologia centrali-americana. Insecta. Hymenoptera Cameron, Peter, 1847-1912, Forel, Auguste, 1848-1931, Godman, Frederick Du Cane, 1834-1919, Salvin, Osbert, 1835-1898, ed