Takeda & Miyake, 1969

Carapace surface smooth, regions rather well demarcated, postorbital region very short; hepatic region moderately produced and broad; supraocular eave very finely spinulated; rostral lobes moderately broad at base, well separated from base, distally subacute. Eyestalk smooth. Basal antennal article with tubercles but without spines or spinules. Chelipeds heavy and swollen, merus especially so; palm much swollen on outer face; fingers compressed and as long as palm, slightly incurved near tip. Dactyl of second ambulatory leg tapering distally, those of posterior legs not falcate. First male pleopod widened distally, and ventrally produced and convex at tip. (Türkay 1995)

Type locality: Tosa Bay, Japan.
Range: Japan - Tosa Bay (Takeda & Miyake, 1969e); East China Sea (Takeda & Miyake, 1969e).

Kingdom Animalia
Phylum Arthropoda
Class Crustacea
Order Decapoda
Suborder Pleocyemata
Infraorder Heterotremata
Superfamily Majoidea
Family Majidae
Subfamily Inachinae
Genus Achaeus
Species Achaeus varians

Status in World Register of Marine Species

Not included in WoRMS database

Scientific synonyms and common names

Achaeus varians Takeda & Miyake, 1969e: 484, figs 6a-b, 7a-f. -- Sakai, 1976a: 161. -- Griffin & Tranter, 1986a: 5(key).

Tosa-ákeúsu [Japanese]
akeúsu, Tosa- [Japanese]

Griffin, D.J.G. & H.A. Tranter, 1986a. The Decapoda Brachyura of the Siboga Expedition. VIII. Majidae. Siboga Expeditie Monografie, 39(C4): 1-335, figs 1-112, pls 1-22.

Sakai, T., 1976a. Crabs of Japan and the Adjacent Seas. (In 3 volumes: (1) English text: i-xxix, 1-773, figs 1-379, (2) Plates volume: 1-16, pls 1-251, (3) Japanese text: 1-461, figs 1-2, 3 maps.) Kodansha Ltd, Tokyo.

Takeda, M. & S. Miyake, 1969e. Crabs from the East China Sea. III. Brachygnatha Oxyrhyncha. Journal of the Faculty of Agriculture, Kyushu University, 15(4): 469-521, figs 1-12. pls 17-18.

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