The council is asking people to watch out for a caterpillar which can cause rashes and skin complaints if touched.

Oak processionary caterpillars, which grow into moths, are beginning to emerge from nests in oak trees.

The creepy-crawlies are covered in tiny hairs which can cause itchy and painful rashes if they come into contact with skin.

They can also cause problems to eyes and throats.

Hairs can be blown in wind and left in the web-like nests they build in oak trees.

The pests have been causing concern to public health officials, with the Forestry Commission and public health authorities raising awareness to halt its spread.

Forestry Commission workers collected and destroyed 708 nests in 2007, with the figure rising to 4,410 in 2011.

Officials are urging the public to report infestations, but to make sure they avoid touching the caterpillars or their nests.

Alison Field, of the Forestry Commission said: "We welcome reports of caterpillars or their nests from the public or others, such as gardeners and tree surgeons, who are out and about in areas with oak trees.

"However, the public should not try to remove the caterpillars or nests themselves. This task needs to be carefully timed to be most effective and is best done by specially trained and equipped operators."

Dr Brian McCloskey from the Health Protection Agency said: "Anyone who experiences an itchy or painful skin rash or a sore throat and irritated eyes after being near oak trees should consult their GP or NHS Direct."

Anyone who spots a nest or infestation can contact 0131 314 6414, or visit forestry.gov.uk