PLANT PROTECTION 1 – Pests, Diseases and Weeds

PLANT PROTECTION 1 – Pests, Diseases and Weeds
Fig. 79. Teatree sawfly larvae
(Pterygophorus sp.). PhotoNSW Dept of
Industry and Investment.
Fig. 80. Sawfly larvae feeding
on Callistemon. PhotoCIT, Canberra
(P.W.Unger).
Fig. 81. Callistemon leaves
skeletonized by sawfly larvae.
PhotoCIT, Canberra (P.W.Unger).
Fig. 82. Leafcutting bees
(Megachile spp.) indiscriminately
damage a number of species but
have no great economic effect.
Fig. 83. Cypress pine sawfly
larva (Zenarge turneri). PhotoCIT,
Canberra (P.W.Unger).
Fig. 84. Gall on flower stem of
Geraldton wax caused by a small
wasp. PhotoWA Agric (Wood & Grimm 1988).
Fig. 85. Parasitic wasp.
Tiny wasp laying an egg in a
scale insect.
Fig. 88. Suppliers of parasitic wasps.
Fig. 86. Predatory wasp.
Native paper wasps are common
and are aggressive stingers.
Fig. 87. Predatory wasp.
European wasp (Vespula
germanica). Sting is painful,
especially if a mature nest is
disturbed which can lead to
hundreds of stings. Few
predators in Australia to
keep it under control.
PARASITIC WASPS
(some examples only)
Parasitic wasp
(Aphytis spp.)
Greenhouse whitefly parasite
(Encarsia formosa)
Parasitic wasps
(Trichogramma spp.)
Parasitic wasps
(Aphidius spp.)
PEST
(not exhaustive)
Red scale (Aonidiella auranti)
Greenhouse whitefly
(Trialeurodes vaporariorum)
Other whiteflies
Moth eggs and caterpillars
of Helicoverpa spp., codling
moth and lightbrown apple
moth
Aphids, eg green peach aphid
and cotton or melon aphid
SUPPLIERS
Australasian Biological Control (ABC)
www.goodbugs.org.au/
This website lists commercial suppliers
of bio control agents and provides advice on
developing an IPM program suitable for your
crop and situation. Some also provide
IPM monitoring services.
Lucid key What Wasp is That?
www.cbit.uq.edu.au/software/whatwasp/
www.lucidcentral.com/
Parasitic wasps can be killed by insecticides
118 Insects and allied pests - Hymenoptera (ants, bees, sawflies, wasps)