The COI forward primer (CI-J-f632) was designed in our laboratory The CI-N-2197 primer is three nucleotides
shorter on the 5’ end than the one reported under the same name. Amplification of a -590 bp fragment of the COI gene using these primers was obtained from most insects we tested (Fig. 1 c). The fragment we obtained from H. virescens and S. graminurn is considerably larger (-800 bp) than that from other insects. At present we cannot confirm whether the fragment amplified from H. virescens and S. graminurn is part of the COI gene or if it is a non-target fragment. The COI fragment has been sequenced from several wasp genera of the family Aphidiidae