Abstract
We report Talitroides alluaudi (Chevreux, 1896) from Miyako Island, Ryukyu Islands, Japan. Although this terrestrial amphipod is distributed worldwide, including Indo-Pacific islands, Europe, and North and South America, the present specimens represent the first record of this species from Japanese islands. The cytochrome c oxidase subunit I (COI) sequence of a Miyako Island specimen was unique compared with the known COI sequences from Taiwanese and Bermudan populations.
Highlights
Terrestrial amphipods known as talitrids—members of Talitroidea —have invaded various inland habitats (Bousfield 1984)
We evaluated genetic variations of this c oxidase subunit I (COI) sequence in MEGA 7.0.26 (Kumar et al 2016) against the 15 T. alluaudi sequences registered in International Nucleotide Sequence Databases (INSD)—AB741765 (Chiang 2012); and KX360507, KX
Several characteristics of the examined Miyako specimens differed from the T. alluaudi lectotype, i.e., antenna 1 flagellum with
Summary
Terrestrial amphipods known as talitrids—members of Talitroidea —have invaded various inland habitats (Bousfield 1984). They were previously classified into a single family, Talitridae; this family was recently split into seven families by Myers and Lowry (2020). Talitroides Bonnier, 1898 is a genus in the family Brevitalitridae, which is one of the seven newly erected families. This genus consists only of two species, Talitroides alluaudi (Chevreux, 1896) and Talitroides topitotum (Burt, 1934). T. alluaudi was recorded from various locations worldwide, to our knowledge, this species has not been found anywhere in the Japanese Archipelago, including the Ryukyu Islands
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