The hunting wasps. Translated by Alexander Teixeira de Mattos - Fabre, Jean-Henri, 1823 -1915 (Hodder and Stoughton, 1916)

Hymenoptera ... - Morley, Claude 1874 -1951 (Taylor and Francis; [etc., etc.], 1897)

Hymenoptera ... - Morley, Claude 1874 -1951 (Taylor and Francis; [etc., etc.], 1913)

Hymenoptera europaea praecipue borealia : formis typicis nonnullis specierum generumve exoticorum aut extraneorum propter nexum systematicum associatis; per familias, genera, species et varietates disposita atque descripta - Dahlbom, Anders Gustav, 1806 -1859 (Ex officina Lundbergiana, 1843)

Hymenoptera. Haütfluger - Peters, Wilhelm C. H. (Wilhelm C. Hartwig), 1815 -1883 (1862)

Hymenoptera of America north of Mexico : synoptic catalog - Krombein, Karl V. (U.S. Dept. of Agriculture, 1951)