Wildlife and Walks
Lackey moths in Watermead
These strange caterpillars are one of our native species, called the lackey moth, Malacosoma neustria.
Lackey moths are moderately common across the southern half of England and Wales. Groups of larvae can be found between April and June feeding on a variety of trees and shrubs, but are most often encountered on fruit trees and in hedge species, such as native roses, blackthorn and hawthorn. They don't present any human health risk but can cause considerable defoliation of the host plant if present in large numbers. However, even extensively defoliated shrubs usually recover by growing a second flush of leaves, so I don’t see any cause for concern at the moment with your apples.
Lackey moth larvae live in colonies for most of their lives. Newly hatched larvae spin a small web between two or three leaves, but these larger larvae have built a more substantial 'nest' by spinning together twigs and branches in a thick web of silk. A large colony may form a nest up to 30cms long and 15cms wide which can be a conspicuous object on the host tree, especially if a lot of the foliage has been eaten. The larvae grow rapidly and by mid-June most will be about 50-55mm long and ready to disperse and find sheltered spots to pupate. The flight period of the adult moths, which are relatively dull brown in colour, is July to August.
So fortunately, no cause for alarm here. They can just be left in peace to continue doing their thing.
These strange caterpillars are one of our native species, called the lackey moth, Malacosoma neustria.
Lackey moths are moderately common across the southern half of England and Wales. Groups of larvae can be found between April and June feeding on a variety of trees and shrubs, but are most often encountered on fruit trees and in hedge species, such as native roses, blackthorn and hawthorn. They don't present any human health risk but can cause considerable defoliation of the host plant if present in large numbers. However, even extensively defoliated shrubs usually recover by growing a second flush of leaves, so I don’t see any cause for concern at the moment with your apples.
Lackey moth larvae live in colonies for most of their lives. Newly hatched larvae spin a small web between two or three leaves, but these larger larvae have built a more substantial 'nest' by spinning together twigs and branches in a thick web of silk. A large colony may form a nest up to 30cms long and 15cms wide which can be a conspicuous object on the host tree, especially if a lot of the foliage has been eaten. The larvae grow rapidly and by mid-June most will be about 50-55mm long and ready to disperse and find sheltered spots to pupate. The flight period of the adult moths, which are relatively dull brown in colour, is July to August.
So fortunately, no cause for alarm here. They can just be left in peace to continue doing their thing.