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Feltiella acarisuga

Feltiella acarisuga

A gnat with its larva that feeds on mites.


Unit of packaging

550 ml contain 250 pupae.

Transportation and storage

Store in the dark.

Storage temperature: 8–10°C.

Storage after receipt: 1-2 days.


Apply to control spider mite and red spider mite on tomato, cucumber, rose, eggplant, pepper etc. It is more effective to use the predator together with Phytoseiulus persimilis and Neoseiulus californicus.

Introduction ratio

If low pest density, use 2500 species per hectare once a week during 3 weeks. If high pest density, apply 10 species per m2 during 3 weeks every 7 days.

Application conditions

Effective at 20-29 °С and humidity of 70-80%. Low humidity (under 50%) and high temperature (over 29°С) negatively affect Feltiella. Eggs of predator do not survive at temperature over 30 °С and humidity under 30%.


Gnat imago is 1-2 mm long, pink-brown color. Larva is 0,2-2 mm long, light-brown color.

Фото личинки Фелтиеллы акарисуги

Life cycle

Development from egg to imago depends on prey and conditions. During life females lay about 30-40 eggs. Prefers 2-3 larval instars. In 4 days larva appears from egg in spider mite colony. Larvae feed on eggs, nymphs and adults of pest, having 4 larval instars, then pupae in low leaf side. Pupae instar lasts 4-6 days.

Куколка Фелтиеллы акарисуги фото



Gnats fly and seek for pest colonies. Imago feeds on sugary secretion of pest. Feltiella larvae can cannibal if no prey. Can also pupate earlier being smaller than usually. Larvae can live 2 days without prey. Predator can diapause if light day reduces. Applied together with Macrolophus, Macrolophus can eat gnat’s larvae. Feltiella is more effective on tomato comparing with Phytoseiulus persimilis.