The Muslin moth also known as Diaphora Mendica belongs to the Arciliidae species. They are usually found in South and Central Britain. The males are either buff or grey-brown in color where the females are a striking white; both have small black dots making them very distinctive. If a Muslin Moth is picked up, it will play dead, not common to all moth families. The females are active during the day and are often seen crawling around vegetation. The males are attracted to light and are night fliers. The Muslin moth is active from April to June. Muslin Moths are the most frequently seen Ermine-like moths flying around in April and May. They have very small wingspans that are extremely variable ranging from 30 to 43 mm.
The females lay their eggs in small clusters with the first larvae appearing in early June. The body of the caterpillar is two tones of brown with lines found on the top side of the body with a light-brown head. These little guys are very adapt crawlers and when threatened they roll their bodies up and play dead. These small larvae can be found in differing plants like chickweed, dandelion and dock weed and are found on the leaf cover in their dark cocoons in the wintertime. These fascinating little moths are very active during the month of May, and both genders can be seen resting in the daylight on tree trunks, leaves or different suburban places. They will quickly fly away when disturbed unlike some other species of moths.