Table 1.

Classification history and synonym for the three Bopyroides species

Kröyer, 1838 [10]	Bate & Westwood, 1868 [14]	Sars, 1898 [15]	Richardson, 1905 [18]
Bopyrus hippolytes Kröyer, 1838 [10]	Gyge hippolytes (Kröyer, 1838) [10]	Bopyroides hippolytes (Kröyer, 1838) [10]	Bopyroides hippolytes (Kröyer, 1838) [10]
			Bopyroides acutimarginatus (Stimpson, 1864) [16] syn
			Bopyroides sarsi (Bonnier, 1900) [17] syn
Scott, 1902 [9]	Bourdon, 1968 [21]
Pleuroctypta cluthae Scott, 1902 [9]	Bopyroides cluthae (Scott, 1902) [9]
Rybakov & Avdeev (1991) [11]
Bopyroides shiinoi Rybakov & Avdeev, 1991 [11]