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Encarsia formosa

Encarsia formosa

A parasitic wasp for controlling greenhouse whitefly on tomato, cucumber, gerbera, rose.


Unit of packaging

50 cardboard strips with 5000 species wrapped in a box.


Transportation and storage

Store in the dark.

Storage temperature: 5–10°C.

Storage after receipt: 18 hours.


When early imago appears use Encarsia, when low or medium pest population. One wasp kills about 60-100 larvae of whitefly during its life. If high pest density, it is recommended to apply together with other whitefly predators or chemicals compatible with IPM.

Introduction ratio of Encarsia

Apply 5-6 units per 1 m2 every 2 weeks. Preventively introduce 10-15 units per 1 m2.

Environmental conditions

Optimal temperature: 26-29°С. Optimal humidity: 60-70%.

Lower temperature threshold: 13-14°С. Fertility and viability extremely decreases at 17°С.


Parasitic wasp 0,6 mm long. Black head and breast, yellow belly. Males are totally black.

Life cycle

Parthenogenesis is reproduction method for Encarsia. Males make about 2% of all population. Males appear only at low temperature. Female lays about 10-15 eggs a day. Lays eggs into whitefly larvae and pupae. Development lasts 15 days at 26°С and 32 days at 18°С. Infested pupae become dark with spots. Thus it is easier to monitor them. Adults appear from infested pupae.

Пупарий белокрылки зараженный Энкарзией

Pupae of whitefly



The wasp also feeds on the honeybud and hemolymph of whitefly larvae piercing them with ovipositor. Encarsia is able to find a victim at a distance of 15-20 meters. The abundance of the honey drop can interfere with the movement of the entomophage. The effectiveness of the use of Encarsia is influenced by the length of the light day (preferably 16-18 hours), brightness of illumination (7 thousand lux and more), air humidity and temperature in the greenhouse. The entomophage does not tolerate insecticides of the pyrethroid group.