Shotberries are undersized, non-viable olives that grow to a maximum of about 4mm. They remain on the tree but do not mature into full-sized fruit, leading to significant yield losses.

About Psyllids: Psyllids, also known as jumping plant lice or lerp insects, are sap-sucking insects related to whiteflies, aphids and scale insects. In Australia, there are hundreds of species of psyllid, most of which are of not of any economic significance. Most psyllid species are host specific and live and feed only on a group of closely related plants or a single tree species), including the psyllids which feed on eucalypts.

Western flower thrips is the most widely distributed thrips species, occurring throughout all olive-growing districts in California. It has a wide host range, feeding on grasses, field and forage crops, vegetables, and fruit crops.