Larval development of the epizoic barnacle Octolasmis unguisiformis Kobayashi & Kato, 2003 (Cirripedia, Pedunculata)

Larvae of the androdioecious and endangered barnacle, Octolasmis unguisiformis , were cultured in the laboratory for the first time. The larvae passed through six free-swimming naupliar stages and a cyprid stage. The naupliar stages required a combined minimum of 44 days at 25°C, and the cyprid stage lasted up to 7 days. However, none of the cyprids settled, even if the host crab ( Macrophthalmus milloti ) was introduced. The morphological features of the naupliar stages are described and compared with other Octolasmis spp.