Feltiella acarisuga

Unit of packaging
Feltiella acarisuga (gall-midge)
Pack size: beaker of 550 ml 
Contains: pupae on leaf, from which 250 gall-midges will emerge

Various species of spider mites. SPIDEND is recommended especially when spider mite occurs in colonies.




interval (days)









curative light




min. 3x

introduce in infested areas only

curative heavy




min. 3x

introduce in entire greenhouse


  • Make a hole in the paper in the lid on the beaker and put it on the rockwool slab or the soil
  • Protect against direct sunlight
  • Let the beaker or box stand for at least two weeks

Environmental conditions
High humidity boosts the emergence of gall-midges.

Storage and handling
Biological beneficials have a very short life expectancy and therefore need to be introduced into the crop as soon as possible after receipt. Storing them for a period can have a negative impact on their quality and is only possible under the conditions described below. Koppert B.V. is not liable for any loss of quality if the product is stored for longer than recommended and/or under incorrect conditions.

  • Storage after receipt: 1-2 days
  • Storage temperature: 8-10°C/47-50°F
  • In the dark

Feltiella acarisuga should always be used in combination with the predatory mite Phytoseiulus persimilis (SPIDEX).


  • Adults: midge of 2 mm long, pink-brown, long legs
  • Eggs: oblong, 0.1 x 0.25 mm in size, shiny, translucent
  • Larvae: 0.2-2 mm in size, orange-brown, occur in spider mite colonies
  • Pupae: are inside a white coccoon, occur mainly at the undersides of leaves, along the veins

Mode of action
Adult gall-midges search for spider mite colonies actively and deposit eggs next to the spider mites. The larvae that hatch feed on spider mite eggs and suck them empty. It takes one week for the eggs to develop to mature larvae. The pupal stage takes approximately one week.

Visual effect
Spider mites that are killed by the gall-midge shrivel up and become brown or black. Dozens of larvae can be found per spider mite infested leaf. White cocoons are clearly visible along the veins of the leaf.

The introduction rates of this product should be adjusted to the mode of action of the product and the results that can be expected in the crop where the product is applied. Your local Koppert consultant or recognized distributor will be able to advise you further.

Only use products that are permitted in your country/state and crop. Check local registration requirements.

Koppert Biological Systems can not be held liable for unauthorized use.


Please contact your local consultant for further application information.

Side effects SPIDEND

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