The MC 500 (Multi cell complex) is an in-hose development of Sautter&Stepper. Each cell of the crinkled cardboard contains a larvae of the Green lacewing. These 'single rooms' are necessary to avoid cannibalism during transportation.
All cells are provided with a food source. A thin gauze is glued to the cells and can be removed bit-by-bit to release the larvae. All you have to do then is tap the larvae out of the cardboard and into the plants. If you have single plants or plants with slender, smooth leaves, you can also tap the larva onto a paper towel which is afterwards put onto the plant.
The beneficials come to you in the voracious second larval stage. As they are dawn-active, they are difficult to find during the day. Depending on temperature and food availability, the development until the pupation takes about 2-3 weeks. The adult lacewing hatches after another two weeks. It feeds on honeydew, however, and leaves the greenhouse/ winter garden to look for food outside. Therefore the application has to be repeated if the pests recur.
The larvae of the Green lacewing have a wide range of prey, such as:
- little caterpillars
Compared to other beneficial insects, the lacewing larvae are quite robust concerning their climate requirements. They are active at temperatures from 12°C on and aren't hindered by low humidity.