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Mandalotus Weevil
Mandalotus spp.
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Damage.
Adults are 3-5mm long, round and dull brown in appearance resembling small clods of dirt. Occurs mainly on rubbly, lighter or calcareous soil types. Commonly found in the mallee districts of southern Australia, but can be found in other regions. Little is known about their life cycle. One generation a year.
Major damage occurs after emergence and crops should be regularly inspected. Monitoring and control should be conducted at night when adults are most active.
Adults actively feed at night on leaves of young seedlings resulting in scallop shaped notches. In severe cases seedlings often ring-barked at ground level causing them to drop. During the day they hide under clods of dirt and trash.
CESAR; C Bell, Rural Solutions SA