"The European species of the genus Helorus Latreille, 1802, are keyed and illustrated, with special reference to their distribution in The Netherlands. Three of the four European species are newly reported for The Netherlands. The description of a new species from Sulawesi (Indonesia) is added: H. celebensis spec. nov." . . "2006"^^ . . "2006"^^ . . "van Achterberg (2006)" . "The European species of the genus Helorus Latreille, 1802, are keyed and illustrated, with special reference to their distribution in The Netherlands. Three of the four European species are newly reported for The Netherlands. The description of a new species from Sulawesi (Indonesia) is added: H. celebensis spec. nov." . "van Achterberg (2006)" . "van Achterberg, C. 2006. European species of the genus Helorus Latreille (Hymenoptera: Heloridae), with description of a new species from Sulawesi (Indonesia). Zoologische Mededelingen Leiden, 80(1): 1-12." .