Bay sucker

Adults are normally a tan colour but can darken with age. They are 4mm in length, with short antennae (<1mm). Nymphs appear similar, however, are smaller and flatter, appearing a pinky-yellow colour. The nymphs are able to produce a white waxy secretion, making them more conspicuous to the human eye. They also create leaf-roll galls, which they use as a 'refuge'. They do this from inhabiting the areas of leaves where the outer margins have rolled inwards from dryness. They fill the area of space with their white waxy secretions, forming a gall.

Bay leaves will curl at their margins, this is where nymphs form galls. They often appear yellow and only part of the leaf is affected. The discolouration from feeding will result in dried up leaves. There may be 'white fluffy balls' on the leaf surfaces. Although unattractive, these insects will not be detrimental to the plant and are tolerable.

Diurnal

Apart from their white 'woolly' secretions, this insect causes minimal damage to bay. If infestations are heavy, it's advised to pick off infected leaves. Roots that are badly effected should be pruned out in winter to encourage new growth, at the same time removing any overwintering pests.

It's not recommended to use chemical treatments to deter this pest. If the bay in question is used for ornamental purposes then consult with your nearest garden centre on what may be the best course of action.