This file contains data from: Thor Veen, Joseph Faulks, Frances Tyler, Jodie Lloyd and Tom Tregenza. Diverse reproductive barriers in hybridising crickets suggests extensive variation in the evolution and maintenance of isolation. Evolutionary Ecology. DOI: 10.1007/s10682-012-9610-2 Data collectors: Thor Veen, Joseph Faulks, Frances Tyler, Jodie Lloyd For information on data collection and methods, contact Thor Veen (thorveen@gmail.com) Data from the two-choice phonotaxis experiment as described in the Prezygotic long-range mating behaviour section of the Results and presented in Figure 2. Each row contains on trial. Columns: femaleID unique identifier for each female female_identity species identity of each female song_left species played from the left song_right species played from the right conspecific_phonotaxis side from which the conspecific song was played turning_effort the turning effort by the female towards the active speaker Species identity abbreviations used: B = bimac = G. bimaculatus C = camp = G. campestris H = hybrid