Camarões de mar profundo do gênero Glyphocrangon A.Milne-Edwards (Crustacea, Decapoda, Caridea, Glyphocrangonidae) coletados ao largo do sudeste do Brasil durante o Programa Revizee

This paper reports on species of the deep-water shrimp genus Glyphocrangon A. Milne-Edwards, 1881 collected during Revizee Program in 1999 and 2000 from southwestern Atlantic off Brazil (ranging from 12°S to 21°S) conducted by R/V “Thalassa”. The collection is represented by the following eight species: G. aculeata A. Milne Edwards, 1881; G. alispina Chace, 1939; G. aurantiaca Holthuis, 1971; G. longirostris (Smith, 1882); G. neglecta Faxon, 1896; G. nobilis A. Milne Edwards, 1881; G. sculpta (Smith, 1882); and G. spinicauda A. Milne-Edwards, 1881. The four species, G. aurantiaca, G. longirostris, G. nobilis and G. sculptaare recorded from the southwestern Atlantic (southeast Brazil) for the first time, with considerable range extensions to south. Brief diagnoses are given for the species.Este trabalho registra as espécies de camarão de mar profundo do gênero Glyphocrangon A.Milne-Edwards, 1881, coletados durante o Programa Revizee em 1999 e 2000 no sudoeste do Atlântico, ao largo do Brasil (de 12°S a 21°S) realizado pelo N/O. “Thalassa”. A coleção é representada por oito espécies: G. aculeata A.Milne Edwards, 1881; G. alispina Chace, 1939; G. aurantiaca Holthuis, 1971; G. longirostris (Smith, 1882); G. neglecta Faxon, 1896; G. nobilis A. Milne Edwards, 1881; G. sculpta (Smith, 1882); and G. spinicauda A.Milne- Edwards, 1881. Quatro espécies, G. aurantiaca, G. longirostris, G. nobilis and G. sculpta, são registradas pela primeira vez para o Atlântico sudoeste (sudeste do Brasil), com significativas extensões de distribuição meridional. Breves diagnoses são apresentadas para as espécies

Una nueva especie de Mirocaris (Crustacea: Decapoda: Caridea: Alvinocaridinae) asocia con fuentes hidrotermales en la Dorsal Central Índica, Océano Índico

Mirocaris indica, a new species of the caridean family Alvinocarididae, is described based on 17 specimens from hydrothermal vent fields on the Central Indian Ridge near the Rodriguez Triple Junction. The new species closely resembles the only known representative of Mirocaris, the Atlantic species M. fortunata (Martin and Christiansen). Shared major characters include the dorsoventrally flattened, unarmed rostrum, the presence of epipods on the third maxilliped through to the fourth pereopod with corresponding setobranchs on the first to fifth pereopods, and the lack of appendices internae on the third and fourth pleopods. However, the lack of submarginal rows of short to long stiff setae on the external surfaces of the fingers of the first chela distinguishes M. indica from M. fortunata, and may reflect a difference in feeding habit between the two species. Further, M. indica may attain a larger adult size than M. fortunata does.Mirocaris indica, una nueva especie de la família caridea Alvinocarididae, se describe basándose en 17 especímenes obtenidos en campos de fuentes hidrotermales de la Dorsal Central Índica cerca de la Triple Convergencia de Rodríguez. La nueva especie es muy parecida al único representante de Mirocaris, la especie atlántica M. fortunata (Martin y Christiansen). Los principales caracteres compartidos incluyen el rostro inerme, aplanado dorsoventralmente, la presencia de epipodios en el tercer maxilípedo hasta el cuarto pereiópodo con correspondientes setobránquias en los pereiópodos primero a quinto, así como la falta de appendices internae en los pleópodos tercero y cuarto. La falta de filas submarginales de cortas a largas sedas rígidas sobre las superfícies externas de los dedos de la primera quela distinguen, no obstante, M. indica de M. fortunata, y pueden reflejar una diferencia en hábitos alimenticios entre las dos especies. Adicionalmente, M. indica alcanza una talla adulta superior a la de M. fortunata

A New Species of Crangonid Shrimp of the Genus Philocheras (Crustacea: Decapoda: Caridea) from Hawai'i

Philocheras breviflagella, a new species of crangonid shrimp, is described and illustrated on the basis of a single ovigerous female collected from O'ahu, Hawai'i, at subtidal depth. The new species is most similar to P. sabsechota (Kemp, 1911) known with certainty only from the Andaman Islands, eastern Indian Ocean. It differs from P. sabsechota in several features, including the much narrower rostrum, the unarmed second lateral carina of the carapace, and the truncate posterior margin of the uropodal exopod. Other differences include the shorter fingers (each with an elongate unguis) of the second pereopod, and medially notched posterodorsal margins of the second and fourth abdominal somites. The new species is the first representative of the genus found to occur in the central Pacific

First record of Scutariella japonica (Platyhelminthes: Rhabdocoela) from Hokkaido, Japan, and notes on its host shrimp Neocaridina sp. aff. davidi (Decapoda: Caridea: Atyidae)

We report the first occurrence record of the freshwater ectoparasitic platyhelminth Scutariella japonica (Matjašič, 1990) from Hokkaido, Japan. The flatworms were collected from the surface of exoskeleton and the inside of branchial chamber of the atyid shrimp Neocaridina sp. aff. davidi. Phylogenetic analysis based on the 18S + 28S concatenated dataset of rhabdocoel flatworms retrieved the Scutariella clade, and our specimens identified with Scutariella japonica were genetically distinct from those referred to S. sinensis Chen, Feng, Lin, Lu & Wang, 2018. Phylogenetic analyses using COI showed that the host shrimp specimens from Sapporo were clustered with N. koreana identified by Shih et al. (2017) and placed close to N. palmata (Shen, 1948) and N. davidi (Bouvier, 1904). Our specimens did not agree with the original description of N. koreana Kubo, 1938, particularly in the shape of the endopod of the male pleopod 1. The identity of the present host shrimp specimens could not be established satisfactorily, and thus they were referred to N. sp. aff. davidi for the time being

A new species of the alpheid shrimp genus Thuylamea Nguyên, 2001 (Crustacea: Decapoda: Caridea) from Yatsushiro Sea, Kyushu, Japan

Komai, Tomoyuki (2018): A new species of the alpheid shrimp genus Thuylamea Nguyên, 2001 (Crustacea: Decapoda: Caridea) from Yatsushiro Sea, Kyushu, Japan. Zootaxa 4378 (3): 387-396, DOI: https://doi.org/10.11646/zootaxa.4378.3.

A new genus and new species of Paguridae (Crustacea: Decapoda: Anomura) from shallow subtidal waters in Okinawa Island, the Ryukyu Islands, Japan

Komai, Tomoyuki (2015): A new genus and new species of Paguridae (Crustacea: Decapoda: Anomura) from shallow subtidal waters in Okinawa Island, the Ryukyu Islands, Japan. Zootaxa 3918 (2): 250-260, DOI: http://dx.doi.org/10.11646/zootaxa.3918.2.

A review of the western Pacific species of the crangonid genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea), with descriptions of seven new species

A review of species of the crangonid genus Metacrangon Zarenkov, 1965 (Decapoda: Caridea) from the Northwest andtropical Southwest Pacific Ocean is presented. Twenty-one species, including seven new to science, are recognized: M.asiaticus (Kobjakova, 1955) from the Kuril Islands and Komandor Islands; M. bythos n. sp. from Japan; M. clevai n. sp.from the Solomon Islands and Vanuatu; M. cornuta Komai & Komatsu, 2009 from Japan; M. holthuisi Komai, 2010 fromJapan; M. karubar n. sp. from Indonesia to Solomon Islands; M. laevis (Yokoya, 1933) from northern Japan and the Rus-sian Far East; M. longirostris (Yokoya, 1933) from Japan; M. miyakei Kim, 2005 from Japan; M. monodon (Birshtein &Vinogradov, 1951) from the North Kuril Islands; M. nipponensis (Yokoya, 1933) from Japan; M. obliqua n. sp. from Ja-pan; M. ochotensis (Kobjakova, 1955) from the South Kuril Islands; M. proxima Kim, 2005 from Japan; M. punctata n.sp. from Indonesia, Solomon Islands and New Caledonia; M. robusta (Kobjakova, 1935) from the Sea of Japan and theSea of Okhotsk; M. similis Komai, 1997 from Japan; M. sinensis Fujino & Miyake, 1970 from the northern part of the EastChina Sea; M. trigonorostris (Yokoya, 1933) from Japan; M. tropis n. sp. from Japan; and M. tsugaruensis n. sp. fromJapan. These species are classified into two informal species groups. The new species are fully described and illustrated.Some previously known species, for which detailed descriptions along modern standards are deemed necessary, are rede-scribed. Metacrangon asiaticus is elevated from a subspecies of M. variabilis to full species status. A key to aid in theidentification of the western Pacific species is provided. Bathymetrical and geographical distributions of the treated spe-cies are summarized. It is strongly suggested that each species is highly localized. The species richness is highest in waters around the Japanese Archipelago (17 of the 41 known species occur in the areas)

Additional records of the pagurid hermit crab genus Trichopagurus de Saint Laurent, 1968 (Crustacea: Decapoda: Anomura), with description of a new species from the Philippines

Komai, Tomoyuki (2013): Additional records of the pagurid hermit crab genus Trichopagurus de Saint Laurent, 1968 (Crustacea: Decapoda: Anomura), with description of a new species from the Philippines. Zootaxa 3670 (2): 274-282, DOI: http://dx.doi.org/10.11646/zootaxa.3670.2.1

A world-wide review of species of the deepwater crangonid genus Parapontophilus Christoffersen, 1988 (Crustacea, Decapoda, Caridea), with descriptions of ten new species

Komai, Tomoyuki (2008): A world-wide review of species of the deepwater crangonid genus Parapontophilus Christoffersen, 1988 (Crustacea, Decapoda, Caridea), with descriptions of ten new species. Zoosystema 30 (2): 261-332, DOI: http://doi.org/10.5281/zenodo.539374