Adult female parasitoid is black with bright legs; its abdomen is pointed and about the same length as the wings. The male has somewhat longer antennae, darkbrown legs and a rounded abdomen, shorter in length than the wings. Aphidius ervi has double the size of Aphidius colemani. An aphid that is parasitized by A. ervi turns into a browngold-coloured round mummie. The young adult hatches through a round lid in the pupa.
Mode of action:
Like Aphidius colemani A. ervi is a good searcher so even at low aphid densities parasitisation rates are rather high. Population build up may be hampered by presence of hyperparasitoids, especially in summer and start of autumn. Hyperparasitoids are parasitoids that parasitize on other parasitoids, for instance on pupae of Aphidius.
Is mainly used against fox glove aphid and potato aphid in greenhouse cultures and indoor plantscapes. It is especially suitable to control aphid infestations in an early stage. The product may readily be used combined with other products against aphids such as PROPYLEA, ADALIA and APHIDEND. Scatter the contents onto the infested plants / crop and leave it there for at least 1 week. Consider repeated introductions. The product is sensitive towards several chemical pest control products. Ask for advise on introduction technique.
effect of ERVIPAR:
- parasitized aphids swallow into greyish brown round mummies
- first mummies appear around 2 weeks after introduction
- young adult parasitoid hatches through a round exit hole at the back of the mummie
- population build up may be hampered by presence of hyperparasitoids, especially in summer and early autumn
The product ERVIPAR:
mummies in buckwheat in a 100 ml bottle. 500 adult parasitoids will hatch from the mummies.
maximum 2 days at 8-10°C laying in the dark.
less effective at temperatures above 30°C; well suitable for use at lower temperatures. Even at 10°C adult parasitoids may be active and fly around in search for hosts.
- potato aphid
- foxglove aphid
- yellow rose aphid