Tiphia pacozo Allen, 1964:1, ♂. Holotype ♂, Barro Colorado, Canal Zone, Panama, June 16, 1956 (USNM, leg. Carl W. & Marian E. Rettenmeyer); Allen, 1971Allen, H.W. 1971. A monographic study of the genus Tiphia (Hymenoptera: Tiphiidae) of western North America. Transactions of the American Entomological Society 97:201-359.:257, Holotype ♂ (U.S. National Museum); Allen, 1972Allen, H.W. 1972. A monographic study of the subfamily Tiphiinae (Hymenoptera: Tiphiidae) of South America. Smithsonian Contributions to Zoology 113:1-76.:17, Holotype ♂ (USNM). - Allen, 1971Allen, H.W. 1971. A monographic study of the genus Tiphia (Hymenoptera: Tiphiidae) of western North America. Transactions of the American Entomological Society 97:201-359. (distribution); Allen, 1972Allen, H.W. 1972. A monographic study of the subfamily Tiphiinae (Hymenoptera: Tiphiidae) of South America. Smithsonian Contributions to Zoology 113:1-76. (distribution).
Tiphia williamsi Allen, 1965:77, ♂. Holotype ♂, Mexico (ANSP). Synonymized with Tiphia pacozo Allen, 1964 by Allen, 1971Allen, H.W. 1971. A monographic study of the genus Tiphia (Hymenoptera: Tiphiidae) of western North America. Transactions of the American Entomological Society 97:201-359.:256. - Allen, 1972Allen, H.W. 1972. A monographic study of the subfamily Tiphiinae (Hymenoptera: Tiphiidae) of South America. Smithsonian Contributions to Zoology 113:1-76.:17 ( listed as synonym of Tiphia pacozo Allen, 1964).