Encarsia formosa

Effective against greenhouse whitefly and tobacco whitefly

The product


EN-STRIP 200x200
What does EN-STRIP look like? 

EN-STRIP contains pupae of the parasitoid Encarsia formosathat are glued on cardboard cards. Females have a dark brown to black head and thorax and a yellow abdomen. The males are completley black, but are rarely found. The parasitoid is about 0.6 mm in size. All developmental stages (except the adult stage) live within the host’s body (larvae or pupae of whitefly). Parasitized greenhouse whiteflies turn black halfway of the parasitoid development, while parasitized tobacco whiteflies turn brown. 

EN-STRIP Encarsia formosa attacking
Encarsia formosa parasitizing a whitefly pupa
EN-STRIP Encarsia formosa female
Encarsia formosa
How does EN-STRIP work? 

The parasitoids emerge from the pupae that are glued on cardboard cards after several days at 20 °C. The parasitoids prefer third and fourth instar whitefly for ovipositionSmaller whitefly stages are preyed upon for host-feeding. This host-feeding is an important part of the control capabilities of this parasitoid. EN-STRIP is less effective when large amounts of honeydew are present or when plants are very hairy.  

When can EN-STRIP be applied? 

EN-STRIP is used in greenhouses and indoor plantings to control greenhouse whitefly (Trialeurodes vaporariorum) and tabocco whitefly (Bemisia tabaci). Consider multiple introductions. The product is sensitive to several chemical pesticides. Ask advice for deployment strategies.  

Other products against whitefly


Effective against
– Greenhouse whitefly
– Tobacco whitefly

SWIRSKI MITE - Amblyseius swirskii, roofmijt


Effective against
– (False) spider mite
– Thrips 

– Whitefly


Effective against
– Whitefly and thrips
– Spider mite
– Caterpillars