Aphidius ervi
pursue the aphid to parasitize. Because of this, the disturbance of aphid colonies can have a serious impact. The aphids can be spread through the crop, [...] after planting of the crop. Introduction rates typically range from 0.25-2 per m 2 /release. Releases should be repeated weekly during the period when aphid [...] Aphidius matricariae . However, if Myzus spp. is their host, they will be of the same size. The parasitization behaviour resembles Aphidius colemani , however