Proceedings of the U.S. National Museum
In a paper entitled A List of the Hymenoptera of the Phillipine Islands, with descriptions of New Species, I recorded 183 species of these insects from the Phillipines, although several doubtful species mentioned by Fr. Castro de Elera in his Catalogo de todo la Fauna Fillipinas were cited but not included in this number. Two genera and thirty-one species were described as new to science in this first paper.
Ashmead, William H., "Descriptions of New Genera and Species of Hymenoptera from the Phillipine Islands" (1904). An. Paper 91.