;
Imago The moth flies from June to July depending on the location. Females are wingless and unable to fly. the males have wings although not all males can fly.
L. lapidella has partial
parthenogenesis. ;Ovum Eggs are laid in the case and hatch in four to five weeks. ;Larva The
larvae live in cases and feed on
algae and
lichen. The cases are covered in lichen and sand, are conical, round in cross-section with a width of ) and up to ) long. They are found on tree trunks, rocks, walls and frames and have a preference for warm dry places. The caterpillar overwinters in the case and can be found from August to May. ;Pupa Pupa can be found from May to June and are attached to the tree or rock where the larva was feeding. ==Distribution==