Katsushi Sakai

A review of the collections of the infraorders Thalassinidea Latreille, 1831 and Callianassidea Dana, 1852 (Decapoda, Pleocyemata) lodged in three German Museums, with revised keys to the genera and species

The collections of the infraorders Thalassinidea Latreille, 1831 and Callianassidea Dana, 1852 logded in three German Museums, viz., Zoologische Staatssammlung, Munich (ZSM), Zoologisches Museum der Universitat Hamburg, Hamburg (ZMH), and Museum fur Naturkunde, Berlin (ZMB) were examined. The results of the present study indicate that the material of these collections comprises 10 families, 31 genera, including one new genus, and 73 species, three of which are new to science.

REDESCRIPTION OF CTENOCHELES BALSSI KISHINOUYE, 1926, WITH COMMENTS ON ITS SYSTEMATIC POSITION AND ESTABLISHMENT OF A NEW SUBFAMILY GOURRETIINAE (DECAPODA, CALLIANASSIDAE)

Ctenocheles balssi Kishinouye, 1926 is redescribed. This species is the type of the genus Ctenocheles, the type genus of the family Ctenochelidae. The Ctenochelidae are reduced to the rank of a subfamily of the Callianassidae. The genera Gourretia and Dawsonius should be included in a new subfamily, Gourretiinae. Ctenocheles balssi Kishinouye, 1926 wird nachbeschrieben. Die Art ist der Typus der Gattung Ctenocheles, die Typusgattung der Ctenochelidae. Der Familienrang der Ctenochelidae ist aufgrund der Merkmale nicht berechtigt. Gerechtfertigt ist allenfalls der Rang einer Unterfamilie innerhalb der Callianassidae. Die Gattungen Gourretia und Dawsonius werden in einer neuen Unterfamilie Gourretiinae zusammengefasst.

Axiid collections of the Zoological Museum, Copenhagen, with the description of one new genus and six new species (Axiidae, Thalassinidea, Crustacea)

The collections of the family Axiidae in the Zoological Museum. Copenhagen. were examined: seven genera including one new genus, Eucalastacus gen.n. and 14 Indo‐Pacific species containing five species, Eiconaxius farreae, E. weberi, E. sibogae, Axius australiensis and Axiopsis serratifrons; six new species, Eiconaxius demani sp.n., E. mortenseni sp.n., Bouvieraxius keiensis sp.n., Eucalastacus torbeni sp.n., Axiopsis tsushimaensis sp.n., and Calocarirdes vigila sp.n.; and three uncertain species. Eutrichocheles aff. brocki, Eutrichochelts sp. and Axiopsis sp. Postorlocaris. Sakaiocaris and Ca1listocaris are referred, respectively. as junior synonyms of Bouvieraxius. Spongiaxius and Ambiaxius.

Some thalassinid collections by R/V "Hakuhou-maru" and R/V "Tansei-maru", University of Tokyo, in the Sulu Sea, Philippines, and in Sagami Bay and Suruga Bay, Japan, including two new species, one new genus, and one new family (Decapoda, Thalassinidea)

[Two species of the genus Eiconaxius, E. indicus (De Man, 1907) and E. hakuhou n.sp., and one species of the genus Spongiaxius, S. brucei Sakai, 1986 were collected from the Sulu Sea, Philippines. One species of Eiconaxius, E. farreae Ortmann, 1891 has been found in Sagami Bay, and a new species of the genus Ambiaxius, A. surugaensis n.sp. was collected from Suruga Bay, both in Japan. The family Eiconaxiidae n.fam. is established for the genus Eiconaxius Bate, 1888. The generic name Briancaris is proposed as a replacement for Callistocaris Kensley, 1989, a synonym of Ambiaxius sensu Kensley, 2000 [not Ambiaxius Sakai & De Saint Laurent, 1989] in the family Calocarididae Ortmann, 1891. Zwei Arten der Gattung Eiconaxius, E. indicus (De Man, 1907) und E. hakuhou sp.n., und eine Art der Gattung Spongaxius, S. brucei Sakai, 1986, sind in der Sulu See (Philippinen) gesammelt worden. Eine Art der Gattung Eiconaxius, E. farreae Ortmann, 1891, fand sich in Japan in der Sagami Bucht und eine neue Art der Gattung Ambiaxius, A. surugaensis sp.n., in der Suruga Bucht auch in Japan. Fur die Gattung Eiconaxius Bate, 1888 wird die Familie Eiconaxiidae fam.n. errichtet. Es wird vorgeschlagen, in der Familie Calocarididae Ortmann, 1891 den Gattungsnamen Callistocaris Kensley, 1989, einem Synonym von Ambiaxius sensu Kensley, 2000 [nicht Ambiaxius Sakai & De Saint Laurent, 1989], durch den Gattungsnamen Briancaris zu ersetzen., Two species of the genus Eiconaxius, E. indicus (De Man, 1907) and E. hakuhou n.sp., and one species of the genus Spongiaxius, S. brucei Sakai, 1986 were collected from the Sulu Sea, Philippines. One species of Eiconaxius, E. farreae Ortmann, 1891 has been found in Sagami Bay, and a new species of the genus Ambiaxius, A. surugaensis n.sp. was collected from Suruga Bay, both in Japan. The family Eiconaxiidae n.fam. is established for the genus Eiconaxius Bate, 1888. The generic name Briancaris is proposed as a replacement for Callistocaris Kensley, 1989, a synonym of Ambiaxius sensu Kensley, 2000 [not Ambiaxius Sakai & De Saint Laurent, 1989] in the family Calocarididae Ortmann, 1891. Zwei Arten der Gattung Eiconaxius, E. indicus (De Man, 1907) und E. hakuhou sp.n., und eine Art der Gattung Spongaxius, S. brucei Sakai, 1986, sind in der Sulu See (Philippinen) gesammelt worden. Eine Art der Gattung Eiconaxius, E. farreae Ortmann, 1891, fand sich in Japan in der Sagami Bucht und eine neue Art der Gattung Ambiaxius, A. surugaensis sp.n., in der Suruga Bucht auch in Japan. Fur die Gattung Eiconaxius Bate, 1888 wird die Familie Eiconaxiidae fam.n. errichtet. Es wird vorgeschlagen, in der Familie Calocarididae Ortmann, 1891 den Gattungsnamen Callistocaris Kensley, 1989, einem Synonym von Ambiaxius sensu Kensley, 2000 [nicht Ambiaxius Sakai & De Saint Laurent, 1989], durch den Gattungsnamen Briancaris zu ersetzen.]

A COLLECTION OF THALASSINIDEA LATREILLE, 1831 (DECAPODA, PLEOCYEMATA) FROM THE SENCKENBERG FORSCHUNGSINSTITUT AND NATURAL HISTORY MUSEUM, FRANKFURT AM MAIN

Unidentified Thalassinidea deposited in the Senckenberg Museum were examined. The collection here presented contains 25 species, including two new genera and five new species, i.e., Axiidae: Anomalaxius floridanus gen. nov., sp. nov.; Meticonaxiidae: Meteoraxius meteor gen. nov., sp. nov.; Callianassidae: Trypaea vilavelebita sp. nov., Callichirus santarosaensis sp. nov.; and Upogebiidae: Upogebia hertwecki sp. nov. The form Calastacus laevis De Saint Laurent, 1972 is recorded only for the second time and is fully described and illustrated from a complete specimen. New distribution data are available herein for all species treated.

A COLLECTION OF CALLIANASSIDEA DANA, 1852 (DECAPODA, PLEOCYEMATA) FROM THE SAUDI ARABIAN RED SEA COAST WITH A CHECK-LIST OF ALL GHOST SHRIMPS (THALASSINIDEA AND CALLIANASSIDEA) KNOWN FROM THE AREA

During a survey of the coastal biodiversity of the Saudi Arabian Red Sea, four species of callianassid ghost shrimps were collected: Gilvossius bouvieri (Nobili, 1904), Neocallichirus mucronatus (Strahl, 1862a), Podocallichirus madagassus (Lenz & Richters, 1880), and Callianidea typa H. Milne Edwards, 1837. Of these, N. mucronatus is recorded from the Red Sea for the first time. With this new record, 29 species of the group are now known in the Red Sea fauna. The distribution of the species within the Red Sea is discussed in detail.

Callianassoidea from the Gulf of Tonkin and the Red Sea, in the Zoological Museum of Moscow University (Decapoda, Thalassinidea)

[Within the new classification of the superfamily Callianassoidea (cf. Sakai, 2010), six genera, including two new genera, with 13 species, including 7 new species and a previously reported form named herein as a new species, all based on material from the Gulf of Tonkin and the Red Sea, are examined in the present paper. In the Callianassidae Dana, 1852, subfamily Callianassinae, the genus Cheramus Bate, 1888 sensu Sakai (2010) includes C. anoplourus (Sakai, 2002) and C. malaccaensis (Sakai, 2002); the genus Notiax Manning & Felder, 1991 sensu Sakai (2010) includes N. bicauda sp. nov.; and the genus Trypaea Dana, 1852 sensu Sakai (2010) includes T. andamaniensis sp. nov., T. kovalewski sp. nov., T. spinoculata Sakai, 2005b, T. spinorostra sp. nov., T. tonkinae (Grebenjuk, 1975), and T. vietnamensis sp. nov. In the subfamily Callichirinae Manning & Felder, 1991 the genus Callichiropsis gen. nov., is established based on the type species Callichiropsis spiridonovi sp. nov. In the second family, Gourretiidae Sakai, 1999, the genus Paragourretia Sakai, 2004 includes P. zarenkovi sp. nov. and Paragourretia sp., and in the third family here examined, Micheleidae Sakai, 1992, the genus Micheleopsis gen. nov. is established on the basis of the type species Micheleopsis orlik sp. nov. Im Rahmen der neuen Klassifikation der Uberfamilie Callianassoidea (cf. Sakai, 2010) und auf der Basis von Material aus dem Golf von Tonkin und dem Roten Meer werden hier sechs Gattungen, davon 2 neue, mit 13 Arten, davon 7 neue, und eine schon bekannte Form untersucht, die hier als neue Art benannt wird. In den Callianassidae Dana, 1852, Unterfamilie Callianassinae, umfasst die Gattung Cheramus Bate, 1888 sensu Sakai (2010) die Arten C. anoplourus (Sakai, 2002) und C. malaccaensis (Sakai, 2002), die Gattung Notiax Manning & Felder, 1991 sensu Sakai (2010) die Art N. bicauda sp. nov. und die Gattung Trypaea Dana, 1832 sensu Sakai (2010) die Arten T. andamaniensis sp. nov., T. kovalewski sp. nov., T. spinoculata Sakai, 2005b, T. spinorostra sp. nov., T. tonkinae (Grebenjuk, 1975) und T. vietnamensis sp. nov. In der Unterfamilie Callichirinae Manning & Felder, 1991 wird die Gattung Callichiropsis gen. nov. auf der Basis der Typusart Callichiropsis spiridonovi sp. nov. errichtet. In der Familie Gourretiidae Sakai, 1999 umfasst die Gattung Paragourretia Sakai, 2004 die Arten P. zarenkovi sp. nov. und Paragourretia sp. In der Familie Micheleidae Sakai, 1992 wird die Gattung Micheleopsis gen. nov. auf der Basis der Typusart Micheleopsis orlik sp. nov. errichtet. , Within the new classification of the superfamily Callianassoidea (cf. Sakai, 2010), six genera, including two new genera, with 13 species, including 7 new species and a previously reported form named herein as a new species, all based on material from the Gulf of Tonkin and the Red Sea, are examined in the present paper. In the Callianassidae Dana, 1852, subfamily Callianassinae, the genus Cheramus Bate, 1888 sensu Sakai (2010) includes C. anoplourus (Sakai, 2002) and C. malaccaensis (Sakai, 2002); the genus Notiax Manning & Felder, 1991 sensu Sakai (2010) includes N. bicauda sp. nov.; and the genus Trypaea Dana, 1852 sensu Sakai (2010) includes T. andamaniensis sp. nov., T. kovalewski sp. nov., T. spinoculata Sakai, 2005b, T. spinorostra sp. nov., T. tonkinae (Grebenjuk, 1975), and T. vietnamensis sp. nov. In the subfamily Callichirinae Manning & Felder, 1991 the genus Callichiropsis gen. nov., is established based on the type species Callichiropsis spiridonovi sp. nov. In the second family, Gourretiidae Sakai, 1999, the genus Paragourretia Sakai, 2004 includes P. zarenkovi sp. nov. and Paragourretia sp., and in the third family here examined, Micheleidae Sakai, 1992, the genus Micheleopsis gen. nov. is established on the basis of the type species Micheleopsis orlik sp. nov. Im Rahmen der neuen Klassifikation der Uberfamilie Callianassoidea (cf. Sakai, 2010) und auf der Basis von Material aus dem Golf von Tonkin und dem Roten Meer werden hier sechs Gattungen, davon 2 neue, mit 13 Arten, davon 7 neue, und eine schon bekannte Form untersucht, die hier als neue Art benannt wird. In den Callianassidae Dana, 1852, Unterfamilie Callianassinae, umfasst die Gattung Cheramus Bate, 1888 sensu Sakai (2010) die Arten C. anoplourus (Sakai, 2002) und C. malaccaensis (Sakai, 2002), die Gattung Notiax Manning & Felder, 1991 sensu Sakai (2010) die Art N. bicauda sp. nov. und die Gattung Trypaea Dana, 1832 sensu Sakai (2010) die Arten T. andamaniensis sp. nov., T. kovalewski sp. nov., T. spinoculata Sakai, 2005b, T. spinorostra sp. nov., T. tonkinae (Grebenjuk, 1975) und T. vietnamensis sp. nov. In der Unterfamilie Callichirinae Manning & Felder, 1991 wird die Gattung Callichiropsis gen. nov. auf der Basis der Typusart Callichiropsis spiridonovi sp. nov. errichtet. In der Familie Gourretiidae Sakai, 1999 umfasst die Gattung Paragourretia Sakai, 2004 die Arten P. zarenkovi sp. nov. und Paragourretia sp. In der Familie Micheleidae Sakai, 1992 wird die Gattung Micheleopsis gen. nov. auf der Basis der Typusart Micheleopsis orlik sp. nov. errichtet. ]

A new genus, Kiictenocheloides gen. nov., in the family Ctenocheloidae Sakai, 2011 (superfamily Callianassoidea Dana, 1852) (Decapoda, Pleocyemata)

Recently, a new species of the genus Ctenocheloides Anker, 2010, viz., Ctenocheloides nomurai Komai, 2013, was reported from the Kii District (= Arita Bay, Kushimoto, Wakayama Prefecture), Japan. However, Komai’s species is not to be included in Anker’s genus Ctenocheloides, because of differences at the generic level with the type species of that genus, Ctenocheloides attenboroughi Anker, 2010, and is thus reclassified herein under a new genus, Kiictenocheloides gen. nov. Both genera, Ctenocheloides Anker, 2010 and Kiictenocheloides gen. nov. are also different from Ctenocheles Kishinouye, 1926, the type genus of the family Ctenochelidae Manning & Felder, 1991, so that the two genera, Ctenocheloides Anker, 2010 and Kiictenocheloides gen. nov. are now included in the family Ctenocheloidae Sakai, 2011.

A review of the genus Eriocheir De Haan, 1835 and related genera, with the description of a new genus and a new species (Brachyura, Grapsoidea, Varunidae)

Mitten crabs (Brachyura, Varunidae, Varuninae) are currently classified into six species belonging to three genera: Eriocheir De Haan, 1835, Neoeriocheir T. Sakai, 1983, and Platyeriocheir Ng, Guo & Ng, 1999, i.e., Eriocheir japonica (De Haan, 1835), E. hepuensis Dai, 1991, E. ogasawaraensis Komai, Yamasaki, Kobayashi, Yamamoto & Watanabe, 2006, and E. sinensis H. Milne Edwards, 1853; Neoeriocheir leptognatha (Rathbun, 1913); and Platyeriocheir formosa (Chan, Hung & Yu, 1995). The results of the present study, however, indicate a reclassification into four genera including one new genus, together lodging seven species, including one new species, and with an eighth currently nameless species remaining as a species inquirenda, as follows: Eriocheir De Haan, 1835, with E. japonica (De Haan, 1835) and E. ogasawaraensis Komai et al., 2006; Paraeriocheir gen. nov., with P. hepuensis (Dai, 1991) and P. sinensis (H. Milne Edwards, 1853); Platyeriocheir Ng et al., 1999, with P. formosa (Chan et al., 1995) and P. guangdonga sp. nov.; and Neoeriocheir T. Sakai, 1983, with N. leptognatha (Rathbun, 1913); under the prevailing circumstances, the species now indicated as Eriocheir sp. [= Eriocheir recta sensu Stimpson, 1858] is to be considered a species inquirenda.

A new subfamily, Dawsoniinae in the Callianassoidea Dana, 1852 (Decapoda, Thalassinidea)

In the text published recently in the series Crustaceana Monographs as vol. 4 (Sakai, 2005), three families, Callianassidae Dana, 1852, Ctenochelidae Manning & Eelder, 1991, and Gourretiidae Sakai, 1999 were reviewed in the superfamily Callianassoidea Dana, 1852. The family Callianassidae comprises 8 subfamilies: Anacalliacinae Manning & Eelder, 1991, Bathycalliacinae Sakai & Tiirkay, 1999, Callianassinae Dana, 1852, Calliapaguropinae Sakai, 1999, Callichirinae Manning & Eelder, 1991, Eucalliacinae Manning & Eelder, 1991, Lipkecallianassinae Sakai, 2005, and Paracalliacinae Sakai, 2005. The subfamily Anacalliacinae consists of the genus Anacalliax De Saint Laurent, 1973; the subfamily Bathycalliacinae of the genus Bathycalliax Sakai & Tiirkay, 1999; the subfamily Callianassinae of the genus Callianassa Leach, 1814; the subfamily Calliapaguropinae of the genus Calliapagurops De Saint Laurent, 1973; the subfamily Callichirinae of the genera Callichirus Stimpson, 1866, Glypturus Stimpson, 1866, Lepidophthalmus Holmes, 1904, Michaelcallianassa Sakai, 2002, Neocallichirus Sakai, 1988, and Podocallichirus Sakai, 1999; the subfamily Eucalliacinae of the genera Calliax De Saint Laurent, 1973 and Paraglypturus Tiirkay & Sakai, 1995; the subfamily Lipkecallianassinae of the genus Lipkecallianassa Sakai, 2002; and the subfamily Paracalliacinae of the genus Paracalliax De Saint Laurent, 1973. The family Ctenochelidae includes the subfamily Ctenochelinae Manning & Eelder, 1991, comprising the genus Ctenocheles Kishinouye, 1926. The family Gourretiidae comprises 3 subfamilies, Callianopsinae Manning & Eelder, 1991, Gourretiinae Sakai, 1999, and Pseudogourretiinae Sakai, 2005. The subfamily Callianopsinae comprises the genus Callianopsis De Saint Laurent, 1973; the subfamily Gourretiinae has three genera, Gourretia De Saint Laurent,