Preventative: 2-5 per 100 sq.ft., weekly
Hot spots: 5-25 per 100 sq.ft., weekly
WAAB250 - 250 Count Bottle
A wide range of Aphids. Aphid parasite of choice for the potato aphid (Macrosiphum euphorbiae) and the glasshouse potato aphid (Aulacorthum solani).
Aphelinus abdominalis are parasitic wasps. Adults are about 2.5-3 mm in length with short legs, short antennae and a yellow abdomen. The other stages of development occur inside the host. A female can lay up to 250 eggs in a 3 week cycle. The female wasp will lay an egg directly into the aphid body where it hatches and the larvae will consume the aphid's body from within. When the parasite larva is fully grown, the host hardens into a leathery black colored mummy. The aphid turns black 7 days after parasitism. The mummy then takes an additional 14 days to develop into an adult wasp. The adult wasp emerges through a jagged edged hole at the rear of the mummy. The first mummies should be seen in your crops in a minimum of 14 days after the first release.
Minimum of 250 viable adults per unit. A food source is provided to ensure that emerged adults arrive in the best possible condition. Aphelinus tend to walk over crops rather than fly, so it remains on the crop and does not readily leave the greenhouse.
Proper identification of the aphid species is important. Monitoring the crop closely and early releases will help in overcoming the pest. Pesticides and even wetting agents and spreader-stickers may adversely affect A. abdominalis survival. Broad spectrum and systemic insecticides are toxic to these wasps.