noneEnter Horismenus cohnorum (Eulophidae): Sp nov, Costa Rica, Parasite of Apanteles (Hymenoptera), p. 158, Parasite; Horismenus iangauldi (Eulophidae): Sp nov, Costa Rica, Parasite of Hyposoter (Hymenoptera), p. 219, Parasite; Horismenus iorus (Eulophidae): Sp nov, Costa Rica, Parasite of Meteorus (Hymenoptera), p. 224, Parasite; Horismenus randyjonesi (Eulophidae): Sp nov, Costa Rica, Parasite of Microgastrinae (Hymenoptera), p. 307, Parasite; Horismenus ristus (Eulophidae): Sp nov, Mexico, Parasite of Apanteles (Hymenoptera), p. 310, Parasite; Apanteles: Hymenopteran parasites, Horismenus alnus, New parasite species, Horismenus apantelivorus, New record, Horismenus cohnorum, Horismenus opsiphanis, Horismenus ristus, Horismenus ticus, Neotropical region, Mexico, New hymenopteran parasite species, Costa Rica, Peru; Astraptes talus, Brassolis sophorae, Cotesia congregata, Erinnyis alope, Opsiphanes invirae, Synale cynaxa: Hymenopteran parasites, Horismenus opsiphanis, Neotropical region; Cotesia americana: Hymenopteran parasites, Horismenus apantelivorus, New record, Neotropical region; Horismenus apantelivorus: Hymenopteran hosts, Apanteles, New record, Cotesia americana, Neotropical region; Horismenus opsiphanis: Hymenopteran hosts, Apanteles, Cotesia congregata, Meteorus, Lepidopteran hosts, Erinnyis alope, Astraptes talus, Brassolis sophorae, Opsiphanes invirae, Synale cynaxa, Neotropical region; Horismenus ristus: Hymenopteran hosts, Apanteles, New parasite species, Mexico, New species from hymenopteran host; Horismenus ticus: Hymenopteran hosts, Apanteles, New parasite species, Horismenus, Lepidopteran hosts, Dialecta, Mexico, New species from hymenopteran host, Costa Rica, New species from lepidopteran host, Peru;