Ground lackey moth vs Small eggar moth

The ground lackey, usually listed as Malacosoma castrensis (also spelled castrense in some sources), is a European moth in the family Lasiocampidae. It is associated with salt marshes and estuaries, and in Britain it is a local coastal species. Its larvae feed on salt-marsh plants such as sea-lavender and sea wormwood, overwinter as eggs around plant stems, and build silken tents as they develop....

The small eggar moth is a European insect in the Lasiocampidae family, recognized for its furry brown body and early spring flight season. Its larvae are known for building large communal silken webs on host plants like blackthorn and hawthorn, where they feed together for protection. After emerging from their pupae, the adult moths do not feed, relying solely on energy stores accumulated during t...