“…Isolating barriers for L. distinguendus agree with barriers in other parasitoid systems. Prezygotic ecological isolation and sexual isolation seem to be common (Bredlau & Kester, ; Danci et al, ; Gounou, Chabi‐Olaye, Poehling, & Schulthess, ; Heimpel, Antolin, Franqui, & Strand, ; Joyce et al, ; Kaiser et al, ; Sundaralingam, Hower, & Kim, ), also in populations which must have been separated only very recently (Desneux et al, ). CI due to the endosymbionts Wolbachia or Cardinium has been reported in several parasitoid systems ( Wolbachia : e.g., Bordenstein et al, ; Bordenstein & Werren, ; Branca, Ru, Vavre, Silvain, & Dupas, ; Gebiola, White, et al, ; Cardinium : Gotoh, Noda, & Ito, ; Perlman, Kelly, & Hunter, ; Zhang, Zhao, & Hong, ; Gebiola, Kelly, et al, ; Gebiola, Giorgini, et al, ).…”