Lulworth skipper caterpillars live in the warmest zone of a grass clump, at a height of . The pupal stage lasts for about two weeks, from the beginning of June onwards, until late July. It is formed inside a loose "nest" of silk and grass that is spun deep inside a tussock of tor grass. Imago begin to emerge in the early middle of July and finish emerging in the middle of September. Typically, they will live for five to ten days—the normal lifespan for a non-hibernating butterfly of the Lulworth's seasonal stage. They fly only in strong sunshine and tend to
Lulworth skipper in) long larva spins a compact cocoon on the site of the eggshell. In this, it will overwinter until around the third week of April, at which point it will eat its way out by making a small hole in the side of the sheath. The caterpillar will then search for tender Tor-grass blades and feed upon them by chewing out notches from the margin. During this time, it will live separately, within a tube composed of the two edges of a blade bound by cords of silk. Fresh tubes will be made as the caterpillar grows larger. Lulworth skipper