 The adult barnacle bears no resemblance to an acorn barnacle but the larval development is typical of a barnacle, with four nauplius larval stages and one cyprid larval stage.The female cyprid larva of "L. panopaei" has a spear-like stylet.When it settles on a suitable crab host, it pierces the carapace and develops underneath as an endoparasite for about a month.