Signiphora fax Girault, 1913:223, ♀. Types 6 ♀♀, West Indies-Porto Rico (San Juan); Barbados (Grenada) (U.S.N.M., No. 14205). - Girault, 1913Girault, A.A. 1913. A systematic monograph of the Chalcidoid Hymenoptera of the subfamily Signiphoridae. Proceedings of the United States National Museum 45:189-233. (distribution); Woolley & Dal Molin, 2017Woolley, J.B. & A. Dal Molin 2017. Taxonomic revision of the flavopalliata species group of Signiphora (Hymenoptera: Signiphoridae). Zootaxa 4315 (1):1-150. (distribution); Noyes, 2019Noyes, J.S. 2019. Universal Chalcidoidea Database. World Wide Web electronic publication. :. (distribution); Perez-Gelabert, 2020Perez-Gelabert, D.E. 2020. Checklist, bibliography and quantitative data of the arthropods of Hispaniola. Zootaxa 4749:1-668. (distribution).
Thysanus insularis Dozier, 1933:98, ♀. Holotype ♀, Damien, Haiti, Jan. 27-29, 1930 (U. S. National Museum, No. 44818, leg. Dozier). Synonymized with Signiphora fax Girault, 1913 by Woolley & Dal Molin, 2017Woolley, J.B. & A. Dal Molin 2017. Taxonomic revision of the flavopalliata species group of Signiphora (Hymenoptera: Signiphoridae). Zootaxa 4315 (1):1-150.:53. - As Signiphora insularis: - Perez-Gelabert, 2008Perez-Gelabert, D.E. 2008. Arthropods of Hispaniola (Dominican Republic and Haiti): A checklist and bibliography. Zootaxa 1831:1-530. (distribution); Perez-Gelabert, 2020Perez-Gelabert, D.E. 2020. Checklist, bibliography and quantitative data of the arthropods of Hispaniola. Zootaxa 4749:1-668. (distribution).
Signiphora flavopalliata desantisi De Santis, 1973:148 Synonymized with Signiphora fax Girault, 1913 by Woolley & Dal Molin, 2017Woolley, J.B. & A. Dal Molin 2017. Taxonomic revision of the flavopalliata species group of Signiphora (Hymenoptera: Signiphoridae). Zootaxa 4315 (1):1-150.:53.