Scientific name:
Trissolcus basalis
Common name:
Parasitic wasp
Product category:
Natural enemy
Use for:
Use for: Stink bugs
  • For the control of Southern green stinkbug (Nezara viridula) and Two spotted stinkbug (Bathycoelia distincta)

  • For the control of Southern green stinkbug (Nezara viridula) and Two spotted stinkbug (Bathycoelia distincta)

Use for

Use for


Southern green stinkbug (Nezara viridula) & Two spotted stinkbug (Bathycoelia distincta)


Macadamia, citrus, avocado, vegetables

How it works

How it works

Mode of action

Adult female parasitic wasps of Trissolcus basalis lay an egg in a host egg. Larvae develop inside the host egg, and after pupation the adult emerges from the host egg by biting a hole in the lid of the stink bug egg.

Visual effect

Parasitised host eggs turn beige-brown after about a week and shiny grey-black after about 10-12 days. Nezara eggs from which Trissolcus has emerged have an opening with a serrated edge. Unparasitised eggs have a nice round edge.

Product specifications

Product specifications

Pack size 100 wasps.
Presentation 50 ml cardboard tube.
Carrier No carrier material.
Developmental stage Adult.
Food Sugar patch.

Directions for use

Directions for use


Hang carboard tube in a tree in the orchard or crop. Apply as illustrated on label.



The release of Greenshield should be done once stinkbug eggs are laid or preferably 2 weeks in advance. Release 100 wasps per hectare every 4 to 6 weeks for the period that either stinkbug egg laying takes place, or the nuts or fruits are prone to damage. Consult a Koppert advisor or a recognised distributor of Koppert products for advice on the best strategy for your situation.

Environmental conditions

Trissolcus basalis is most effective at temperatures between 20°C and 30°C (77 and 86°F).

Side effects

Pesticides can have (in)direct effects on biological solutions. Find out which pesticides have side effects on this product.

Go to side effects database
Product handling

Product handling

Storage time after receipt

1-2 days.

Storage temperature


Storage conditions

In the dark.


"The general conditions of Koppert (Koppert B.V. and/or of its affiliated companies) apply. Only use products that are permitted in your country/state and crop. Always comply with the conditions specified in local product registrations. Koppert cannot be held liable for unauthorized use. Koppert is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions."

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