Acontiophorus estivalis sp. nov., female A habitus, dorsal B urosome, dorsal C anal somite and caudal rami, ventral D antennule E antenna F oral siphon G mandible H inner lobe of maxillule I outer lobe of maxillule. Scale bars: 0.1 mm (A); 0.05 mm (B, C, F, G); 0.02 mm (D, E, H, I).