Tetrastichus gentilei Del Guercio, 1911:222 - Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198. (distribution). - As Thripastichus gentilei: - Hansson, 2011Hansson, C. 2011. Catalogue of the Eulophidae in the neotropical region (2009 updated 2011). :1-78. (distribution); Noyes, 2019Noyes, J.S. 2019. Universal Chalcidoidea Database. World Wide Web electronic publication. :. (distribution); Meurgey & Ramage, 2020Meurgey, F. & T. Ramage 2020. Challenging the Wallacean shortfall: A total assessment of insect diversity on Guadeloupe (French West Indies), a checklist and bibliography. Insecta Mundi 786:1-183. (distribution).
Tetrastichus thripophonus Waterston, 1923:453 - Maldonado & Navarro, 1967Maldonado, J. & Navarro, C.A. 1967. Additions and corrections to Wolcott's 'Insects of Puerto Rico'. Caribbean Journal of Science 7 (1-2):45-64. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:995 ( listed as synonym of Tetrastichus gentilei Del Guercio, 1911); LaSalle, 1994LaSalle, J. 1994. North American genera of Tetrastichinae (Hymenoptera: Eulophidae). Journal of Natural History 28:109-236.:201 ( listed as synonym of Thripastichus gentilei (Del Guercio, 1911)).
Tetrastichus tatei Dozier, 1937:129, ♀. Holotype ♀, Experiment Station grounds at Mayagüez, P. R., March 26-April 5, 1936 (U. S. National Museum, No. 51608, leg. Dozier). - Wolcott, 1948Wolcott, G.N. 1948. The insects of Puerto Rico. The Journal of Agriculture of the University of Puerto Rico 32 (4):749-975. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:995 ( listed as synonym of Tetrastichus gentilei Del Guercio, 1911); LaSalle, 1994LaSalle, J. 1994. North American genera of Tetrastichinae (Hymenoptera: Eulophidae). Journal of Natural History 28:109-236.:201 ( listed as synonym of Thripastichus gentilei (Del Guercio, 1911)).