- Pfaffenhütchen web moth
- Felt gall mite
- Spindle tree lid scale louse
Pfaffenhütchen web moth
This moth uses the Spindle bush as a host plant for oviposition. The larvae develop fine webs, some of which stretch across the entire bush. They feed on the leaf mass and can eat the shrub completely bare. Since the larvae pupate by the second leaf shoot, the spindle bush quickly recovers from an infestation.
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Felt gall mite
This pest settles on the underside of the leaf to suck the cell sap out of the veins. An infestation can be recognized by whitish, felty hairs that can extend from the central vein over the entire underside of the leaf. The top often appears yellowed, but in most cases it remains unchanged.
The mites live socially in the felt hair structure. They are 0.1 to 0.2 millimeters in size and can only be seen under a microscope. Hibernation takes place in the buds of the eucoat or in cracks on the bark. If the infestation is severe, leaves can fall. Felt gall mites usually do not cause any major damage and do not need to be controlled.
Spindle tree lid scale louse
Since the 1990s, this pest has been appearing more and more on the ephemera and in some cases causes major damage. The Japanese spindle bush (Euonymus japonicus) is particularly affected. The scale insect spreads in dry and warm conditions. Container plants are attacked more frequently than outdoor trees. The first signs of an infestation are light colored spots on the upper side of the leaf. Under favorable conditions, the pests spread rapidly all over the bush.
The females are fertilized in autumn and overwinter on the bush. In spring they lay up to 50 eggs under their shield, from which orange-yellow colored larvae hatch from June. These are mobile and spread out on the leaves to suck out the cell sap. If the infestation is severe, the plant can be weakened, leading to early leaf fall.
You can do that:
- Cut off parts of the plant and dispose of them
- Scrape signs from leaves and shoots
- promote natural enemies such as ladybugs and lacewings
