The banana spider mite (Tetranychus lambi) and the two-spotted mite (Tetranychus urticae) which are both commonly referred to as ‘spider mites’ or ‘red spider’, can cause significant damage to banana leaves and even fruit when present at high levels. They are a common pest of bananas, especially over the warmer spring and summer months. Mites feed mainly on the underside of plant leaves, consuming the contents of plant cells. This permanently damages the leaf and reduces its functionality. With moderate to severe mite damage, fruit development can be delayed and occasionally fruit can be marked with a reddish discolouration towards the cushion end.