Silveira, Orlando Tobias. 2002. “ Surveying Neotropical Social Wasps: An Evaluation of Methods in the ‘Ferreira Penna’ Research Station (ECFPn), in Caxiuanã, PA, Brazil (Hym., Vespidae, Polistinae) ”. Papéis Avulsos De Zoologia 42 (12): 299-323. https://doi.org/10.1590/S0031-10492002001200001.