Use of life table statistics and degree day values to predict the colonisation success of Hydrellia lagarosiphon Deeming (Diptera: Ephydridae), a leaf mining fly of Lagarosiphon major (Ridley) Moss (Hydrocharitaceae), in Ireland and the rest of Europe

► The first biological control agent candidate for Lagarosiphon major is assessed. ► L. major is the first submerged macrophyte targeted using CBC in Europe. ► Demographic, reproductive and survival parameters of Hydrellia lagarosiphon reared on L. major are shown. ► The number of Td and the Ro were then calculated to predict establishment potential. ► Data suggest H. lagarosiphon is suitable for use as a CBC agent against L. major in Europe.