European red mite
ulmi , is mainly a pest of fruit trees (apple, pear, plum and cherry). However, it can attack a large scale of other woody plants and is occasionally a problem [...] when these coalesce the leaves loose colour; this is often referred to as bronzing. When infestation is heavy, leaves can drop. Life cycle and appearance [...] leaves but moves to upper leaf surfaces when the lower side becomes crowded. Contrary to the two-spotted spider mite , Tetranychus urticae , it does not produce