Ofrécense novos datos sobre algúns mirmecófilos galegos, entre os que se poden destacar Microdon myrmicae Schönrogge et al., 2002 (Diptera: Syrphidae), citada por primeira vez para España e con Myrmica aloba Forel, 1909 (Hymenoptera: Formicidae) como hospedeiro, e Coccinella magnifica Redtenbacher, 1843 (Coleoptera: Coccinellidae), atopada por primeira vez en Galicia e asociada a Formica pratensis Retzius, 1783 (Hymenoptera: Formicidae). Por outra banda, Microdon analis (Macquart, 1842) identificouse polo pupario, e atopouse nun niño de Lasius platythorax Seifert, 1991. Haeterius ferrugineus (Olivier, 1789) (Coleoptera: Histeridae) cítase por primeira vez na provincia de Lugo. Palabras clave: Coleoptera, Diptera, Coccinellidae, Syrphidae, Microdon myrmicae, Coccinella magnifica, mirmecófilos, Galicia, España.

New data on some Galician myrmecophiles are given, among which can be highlighted Microdon myrmicae Schönrogge et al., 2002 (Diptera: Syrphidae), recorded for the first time for Spain and with Myrmica aloba Forel, 1909 (Hymenoptera: Formicidae) as host, and Coccinella magnifica Redtenbacher, 1843 (Coleoptera: Coccinellidae), found for the first time for Galicia and associated to Formica pratensis Retzius, 1783 (Hymenoptera: Formicidae). On the other hand, Microdon analis (Macquart, 1842) was identified by means of the puparia, and was found in a nest of Lasius platythorax Seifert, 1991. Haeterius ferrugineus (Olivier, 1789) (Coleoptera: Histeridae) is recorded for the first time from the province of Lugo. Key words: Coleoptera, Diptera, Coccinellidae, Syrphidae, Microdon myrmicae, Coccinella magnifica, mirmecophiles, Galicia, Spain.