Trichogramma evanescens is a parasitic wasp of approximately 0.5 mm in size. This small parasitic wasp parasitezes the eggs of moths that lay single eggs. An example of this is the Turkish moth  (Chrysodeixis chalcites) The kinked antennae and dark brown abdomen are striking. The Trichogramma evanescens has a larger search range than other Trichogramma species.

Life cycle and activity

An adult lays one or more eggs in a host egg. The number of parasitic wasps that develop in the egg depends on the egg size, but can reach up to 20-30. They can parasitize between 200-300 eggs. Host eggs that are heavily covered, have hairs of scales are less suitable for good parasitisation. The optimum temperature is between 20ºC and 25ºC with relative humidity between 65%-80%. Development from egg to adult takes 9 to 11 days. Life span 12 to 16 days. When pollen are available, the adults can survive longer.

Deployment and dosage

Release Trichogramma evanescens at the first observation of the pest. Degree of deployment depends on pest pressure, consult with your consultant. Avoid direct sunlight and high temperatures. Layout method is preferably in a checkerboard field to achieve optimal coverage. The use of this parasitic wasp is like an insectiscide and aimed at reducing sprayapplication times.

Loose material spread with a airbug or by hand. Pupae are hatching in 1 or 2 days.

Sachets have a duration time of approximately 3 weeks. Sachets are positioned at a low level in the plant.

Packaging and contents

Bottle with 100.000 pupae
Sachets: 100 per box with 2000 pupae per sachet

Carrier material: sawdust

Optimal storage conditions

The shelf life is 1 to 2 days, stored in the dark at a temperature of 4ºC to 8ºC.