Aroui onagawae (Takekawa & Ishimaru, 2000) Kilgallen & Lowry, 2015

Kilgallen, Niamh M. & Lowry, James K., 2015, A review of the scopelocheirid amphipods (Crustacea, Amphipoda, Lysianassoidea), with the description of new taxa from Australian waters, Zoosystematics and Evolution 91 (1), pp. 1-43 : 3

Aroui onagawae (Takekawa & Ishimaru, 2000) comb. n. Figure 3

Scopelocheirus onagawae Takekawa & Ishimaru, 2000: 681, figs 1-6. - Takekawa et al. 2004: 971. - Ide et al. 2005: 725. - Ide et al. 2006a: 194. - Ide et al. 2006b: 1209. - Ide et al. 2007: 71.

? Scopelocheirus hopei. - Nagata 1965: 148. - Sekiguchi and Yamaguchi 1983: 10, fig. 6.

Type material.

Holotype, male, 10.4 mm, AMTU 110. Paratypes: males, AMTU 101, 102, 104, 105; females AMTU 106, 108, 109; juveniles AMTU 103, 107.

Type locality.

Japan, Miyagi Prefecture, Onagawa Bay (38°25.75'N, 141°32'E), 30 m depth.

Depth range.

30 m ( Takekawa and Ishimaru 2000). Possible extension to 519 m ( Sekiguchi and Yamaguchi 1983).

Distribution.

Japan: Onagawa Bay ( Takekawa and Ishimaru 2000); Seto Inland Sea? ( Nagata 1965) (as Scopelocheirus hopei ); Enshu- and Kumano-nada? ( Sekiguchi and Yamaguchi 1983) (as Scopelocheirus hopei ).

Ecology.

A scavenger, taken in baited traps ( Ide et al. 2005), and also known to attack injured flounder juveniles under laboratory conditions ( Ide et al. 2006b).

Discussion.

Takekawa and Ishimaru (2000) originally placed this species in the genus Scopelocheirus , based on the lack of a setal fringe on the coxae of the anterior pereopods. In the present study we have revised the diagnoses for these genera and excluded this character from the diagnosis of Aroui . We are therefore removing this species from the genus Scopelocheirus to Aroui based on maxilla 2, of which the outer plate is shorter than the inner plate and bears long, distally barbed slender setae.