Home ​​​​>​​​​ Knowledge Center​​​​

Feltiella acarisuga eggs are pale yellow and are found in spider mite hot spots but are difficult to find. The larvae of the gall midge are about 2.5 mm in size and have a transparent, orange color. At a later stage, they turn more red, brown or gray. The larvae pupate on the leaf. An adult gall midge has a long, slender body with long legs.

The Feltiella acarisuga gall midge is effective against spider mites. The adult gall midges have a very good detection capacity and lay their eggs in spider mite colonies. The larvae of the gall midge are aggressive and therefore very effective against spider mites. When the larvae attack their prey, they inject a toxin into the body of the prey. This paralyzes the prey and liquefies its contents, making it easy for the larvae to suck it up.

Feltiella acarisuga thrives best in high humidity and temperatures of at least 15°C. Even at low levels of humidity, the gall midge is quite capable of fighting the spider mite.  

Feltiella acarisuga is supplied under the name of Feltiline. Remove the lid and place the container in the shade on the ground near the spider mite population and away from the irrigation system to prevent the container from filling up with water. Use one container per local outbreak or divide the contents between a number of places. Repeat four times at weekly intervals until pupae appear under the leaves. (Duration of development is 22-25 days at 22°C). Always use Feltiella acarisuga in combination with Phytoseiulus persimilis (PHYTOcontrol).  

Check the product for aberrations upon receipt and report any complaints or comments within 24 hours. Preferably use the product immediately. If storage is required, keep the product in a dark place at a temperature of 8-10°C for up to 24 hours.

Can't find your answer? Fill out the contact form and our specialist Kevin van Kester will get back to you. On weekdays, even within 24 hours.