January Pest of the Month: Bean spider mite

Name: Bean spider mite Tetranychus ludeni

Similar to: Two-spotted mite

Description

Egg: Minute, globular, almost transparent, can have reddish tinge.

Immatures: Similar to two-spotted mite.

Adult: Approximately 0.5 mm long with 8 legs, uniformly dark red, distinguishing it from two-spotted mite which is yellowish-green with two dark spots. In cooler climates the red overwintering phase of two-spotted mite is a lighter red than that of bean spider mite.

Damage: Feeds on underside of leaf and sometimes on upper surface. Leaves become mottled and bleached. Severe infestations can cause premature leaf fall. Damaging populations develop quickly in warm, dry conditions.

For further information please refer to the industry Pest ID Tool – http://pestid.com.au/

An initiative of the Nursery Levy funded National Nursery Industry Biosecurity Program (NY15004) and ‘Building the resilience and on-farm biosecurity capacity of the Australian production nursery industry’ Project (NY15002).