抄録
Two species of the rare mud shrimp genus Naushonia Kingsley, 1897 (Thalassinidea: Laomediidae) are reported from Japanese waters. Naushonia japonica, new species, described based on a single male specimen from Shimonoseki, southwestern Honshu, is similar to N. perrieri (Nobili, 1904) known only from the Red Sea. They are differentiated by the armature of the rostrum and anterolateral margin of the carapace, development of the second lateral carina on the gastric region of the carapace, armature of the antennal scale and shape of the dactylus of the first pereopod. Naushonia lactoalbida Berggren, 1992, originally described from Mozambique, East Africa, is recorded from Iriomote Island, southern Ryukyu Islands. The record of species of Naushonia in the western Pacific region has been represented only by planktonic zoeas of an unidentified species taken at Gokasho Bay, central Japan (Konishi, 2001). The occurrence of species of Naushonia in the region is now fully confirmed by the discovery of the adult specimens.
