Emphytus recens Say, 1836:221, ♂. ♂, Indiana. - Cresson, 1861Cresson, E.T. 1861. Catalogue of the described species of Tenthredinidae and Uroceridae, inhabiting North America. Proceedings of the Entomological Society of Philadelphia 1 (1):33-39. (distribution). - As Ametastegia recens: - 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 Harpiphorus recens: - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum. Vol. I: Tenthredinidae incl. Uroceridae (Phyllophaga & Xylophaga). G. Engelmann, 459. (distribution).
Emphytus stramineipes Cresson, 1880:52, ♀.Washington Territory (leg. Morrison). - Dalla Torre, 1894Dalla Torre, C.G. 1894. Catalogus Hymenopterorum. Vol. I: Tenthredinidae incl. Uroceridae (Phyllophaga & Xylophaga). G. Engelmann, 459. (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.:104 ( listed as synonym of Ametastegia recens (Say, 1836)).
Emphytus angustus Kincaid, 1900:360 - 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.:104 ( listed as synonym of Ametastegia recens (Say, 1836)).
Emphytina pulchella Rohwer, 1911:400 - 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.:104 ( listed as synonym of Ametastegia recens (Say, 1836)).
Emphytina pallidiscapa Rohwer, 1911:401 - 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.:104 ( listed as synonym of Ametastegia recens (Say, 1836)).
Emphytina virginica Rohwer, 1911:401 - 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.:105 ( listed as synonym of Ametastegia recens (Say, 1836)).
Emphytus yuasi MacGillivray, 1921:31 - 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.:105 ( listed as synonym of Ametastegia recens (Say, 1836)).