Green Lacewings (Mallada basalis) for Thrips and Aphids control
Mallada spp., better known as both green lacewings and aphid lion,
is a predator that often spontaneously occurs in greenhouses and
open fields. The larvae are extremely greedy and efficient against
thrips, aphids and small insects. The adults are fragile, light
green insects with long, transparent, fine-veined wings and golden
eyes. The adult green lace wing is no predator but feeds with
nectar, honeydew and pollen.Biology:
In nature, there are 15-18 generations per year. The Female adults
start laying eggs (approximately 20 per day). These eggs are
deposited separately or in groups on short stalks (length of 0.7
mm) at the underside of the leaves (Fig. 1). After 3 days, the
first larval stage develops and later on, also the second (Fig. 2)
and third larval stages follow
Figure 1: Stalk protects green lacewings egg from carnivorous
Figure 2: A second-stage larva of M. basalis
The third larval stage is the most important one for biological
control, as it represents 80% of the total amount of food taken.
The third instar has a length of approximately 0.5-0.6 mm and eats
up to 50 thrips and aphids per day (total ca. 600). About 10-12
days after oviposition, the larvae pupate. One week later, the
adult lacewings (Fig. 3) emerge.
Figure 3: A female adult of Green Lacewings
Mallada basalis can be released in different vegetable crops,
fruits and ornamentals against different kinds of thrips and
aphids. M. basalis also eats red spider mites, white flies, scales
and mealy bugs, small caterpillars, and eggs of moths.
Especially in crops with a high temperature variation and/or
changing relative humidity, M. basalis will not have any problems.
As the larvae cannot fly, they need to be able to reach their prey
via the shortest way. It is therefore important to introduce the
larvae near the target pest. With M. basalis, only the hot spots or
the entire open field and greenhouse can be treated. If hot spots
are controlled in an early stage, there is less probability of
infestation of the entire crop.
ekos Ecosystem presents M. basalis per 5,000 eggs on vermiculite in
a 1-liter plastic bottle. M. basalis is best released in the hot
spots. MB-Solution has to be used within 2 days after received.
· Controls both
thrips and aphids.
· Also attack other
small soft-body insects and eggs.· Can be used along
with other biological control agents.
min. 2 times
min. 2 times