Pollinators:
Bumblebees
Bumblebee
box
Danger to crops:
Aphids
(1)
Aphids
(2)
Butterflies/
Moths
Leaf
miners
Mealy
bugs
Nematodes
Sciarid
flies
Soil
infestations
Spider
Thrips
Whiteflies
Thrips tabaci Onion
thrips
Frankliniella
occidentalis Western flower thrips
Thrips
fuscipennis Western flower thrips
Photo: Damage by
thrips.
Duration of development;
egg-adult, at 25șC ± 15 days.
Damage picture; thrips
cause suction damage to leaves, flowers and fruits
(especially on the ovary). The damage caused by virus
transmission can be enormous.
CROP PROTECTING AGENTS
AMBLYSEIUS
cucumeris predatory mite
Duration of
development; egg-adult, at 25șC ± 9 days.
By sucking out the youngest larva stage, this predatory
mite keeps the thrips population on a low level.
Photo: Amblyseius
cucumeris
AMBLYSEIUS
degenerans pradatory mite
Duration of
development; egg-adult, at 25șC ± 8 days.
This predatory mite is very fast in seeking the young
thrips' larvae as preys and can easily be noticed because
of its colour. Also with a low relative air humidity, it
will keep on growing and working; even faster than the A.
cucumeris.
Photo: Amblyseius
degenerans
ORIUS spp
assassin bug
Orius insidiosus, Orius laevigatus, Orius
majusculus
Duration of
development; egg-adult, at 20șC ± 33 days.
All stages of the different kinds of Orius are used for
the thrips control. This assassin bug is a fast predator,
which can also feed on other insects and pollen, if no
thrips are available.
Photo: Orius spp