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Yokoya, 1933

Carapace covered by close set spinules except anteriorly, a metagastric tubercle or spine and a transverse cardiac pair of tubercles present, postorbital region very short, hepatic region weakly or moderately produced and broad, laterally truncate or with blunt lobes; supraorbital eave with close set spinules along outer margins; rostral lobes moderately broad at base, well separated from base, subacute at tip. Eyestalk with a row of three to four spines anteriorly. Basal antennal article with a strong antero-lateral spine as well as spinules on lateral and medial edges. Ischium of third maxillipeds with a longitudinal row of spinules on each side of the longitudinal central groove; merus with long spines along the medial edge. Male chelipeds slender; merus with a row of long spines dorsally and ventrally; carpus with only a few spinules; palm spinulous on dorsal and ventral margins; fingers slender, weakly incurved distally, and narrowly gaping. Dactyl of second ambulatory leg broadest subterminally. (Türkay 1995)

Type locality: Bungo Strait, Japan, 106 m.
Range: Japan - Bungo Strait (Yokoya, 1933), Tsushima Strait (Takeda, 1973c), Shiono-misaki (Takeda, 1979a); East China Sea (Takeda & Miyake, 1969e); Indonesia - Selat Sape, Banda, Timor, Kepulauan Kai, and Kepulauan Aru (Griffin & Tranter, 1986a); Western Australia - Point Cloates and Bluff Point (Griffin, 1970e); 39-112m.

Achaeus robustus