Stellaria media
The larvae feed on "Arenaria serpyllifolia", "Cerastium arvense", "Cerastium glomeratum", "Myosoton aquaticum", "Stellaria alsine", "Stellaria holostea", "Stellaria media", "Stellaria nemorum" and "Stellaria uliginosa". Full-grown larvae live in a slender greyish white three-valved tubular silken case of about 8 mm. The mouth angle is about 45°. There are often several cases together on a small number of plants. Full-grown cases can be found in May.