Mesochorus rufus Brullé, 1846:250, ♀. Holotype ♀, Guyane (leg. Leprieur). - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution). - As Ischnopus rufus: - Morley, 1915Morley, C. 1915. A revision of the Ichneumonidae based on the collection in the British Museum (Natural History) with descriptions of new genera and species. Part IV: Tribes Joppides, Banchides and Alomyides. British Museum, London, England. 1-167. (distribution).
Ischnopus taeniopterus Kriechbaumer, 1898:26, ♂♀ Synonymized with Ischnopus rufus (Brullé, 1846) by Morley, 1915Morley, C. 1915. A revision of the Ichneumonidae based on the collection in the British Museum (Natural History) with descriptions of new genera and species. Part IV: Tribes Joppides, Banchides and Alomyides. British Museum, London, England. 1-167.:55. - Kriechbaumer, 1898Kriechbaumer, J. 1898. Die Gattung Joppa. Entomologische Nachrichten 24 (1/2):1-36. (distribution); Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution).
Ischnopus longiceps Kriechbaumer, 1898:25, ♀? - Kriechbaumer, 1898Kriechbaumer, J. 1898. Die Gattung Joppa. Entomologische Nachrichten 24 (1/2):1-36. (distribution); Sime & Wahl, 2002Sime, K.R. & D.B. Wahl 2002. The cladistics and biology of the Callajoppa genus-group (Hymenoptera: Ichneumonidae, Ichneumoninae). Zoological Journal of the Linnean Society 134:1-56.:39 ( listed as synonym of Ischnopus rufus (Brullé, 1846)).
Macrojoppa parviceps Cameron, 1911:159, ♂. ♂, British Guiana (Georgetown Museum); Morley, 1915Morley, C. 1915. A revision of the Ichneumonidae based on the collection in the British Museum (Natural History) with descriptions of new genera and species. Part IV: Tribes Joppides, Banchides and Alomyides. British Museum, London, England. 1-167.:55, Type ♂ (British Museum). - Morley, 1915Morley, C. 1915. A revision of the Ichneumonidae based on the collection in the British Museum (Natural History) with descriptions of new genera and species. Part IV: Tribes Joppides, Banchides and Alomyides. British Museum, London, England. 1-167.:55 ( listed as synonym of Ischnopus rufus (Brullé, 1846)).