Fauna Europaea: Hymenoptera – Apocrita (excl. Ichneumonoidea) od Mircea-Dan Mitroiu, John Noyes, Aleksandar Cetkovic, Guido Nonveiller, Alexander Radchenko, Andrew Polaszek, Fredrick Ronquist, Mattias Forshage, Guido Pagliano, Josef Gusenleitner, Mario Bartalucci, Massimo Olmi, Lucian Fusu, Michael Madl, Norman Johnson, Petr Jansta, Raymond Wahis, Villu Soon, Paolo Rosa, Till Osten, Yvan Barbier, Yde de Jong

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