scholarly journals Deep-sea clawed lobster Nephropsis stewarti Wood-Mason, 1872 species complex in the Indo-West Pacific (Crustacea, Decapoda, Nephropidae), with description of a new species

ZooKeys ◽  
2020 ◽  
Vol 1008 ◽  
pp. 37-60
Author(s):  
Su-Ching Chang ◽  
Tin-Yam Chan ◽  
Appukuttannair Biju Kumar
Keyword(s):  
Deep Sea ◽  
Common Species ◽  
The Philippines ◽  
West Pacific ◽  
Large Form ◽  
Central Indian Ocean ◽  
Northwestern Australia ◽  
Southern Taiwan ◽  
Selection For ◽  
A New Species

Nephropsis stewarti Wood-Mason, 1872 is the most common species of the deep-sea clawed lobster genus Nephropsis Wood-Mason, 1872 in the Indo-West Pacific. Morphological comparisons and genetic analyses of extensive material referred to this lobster revealed the presence of three species. The three species differ mainly in body size, development of the intermediate carina on the carapace, position of the lateral pair of rostral teeth, whether the pleonal tergum is granulate, and the spination on the large chelipeds. Nephropsis stewarti is restricted to the western central Indian Ocean, and a neotype is selected to fix its identity. The name Nephropsis grandis Zarenkov, 2006 is revived with neotype selection for the large form found in the West Pacific and northwestern Australia. The smaller form from southern Taiwan and the Philippines is described as Nephropsis pygmaeasp. nov.

Deep-sea chitons from sunken wood in the West Pacific (Mollusca: Polyplacophora: Lepidopleurida): taxonomy, distribution, and seven new species

Zootaxa ◽  
2012 ◽  
Vol 3195 (1) ◽  
pp. 1 ◽  
Author(s):  
JULIA D. SIGWART ◽  
BORIS I. SIRENKO
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Solomon Islands ◽  
The Philippines ◽  
Identification Key ◽  
Sensory Function ◽  
The West ◽  
West Pacific ◽  
Important Habitat

Natural deposits of sunken wood provide an important habitat for deep-sea invertebrates. Deep-sea chitons in the primitiveorder Lepidopleurida are typically collected rarely and as single specimens. However, these animals have been recoveredin large densities associated with sunken wood in the tropical West Pacific, in groups of up to 50 individuals. Four deep-sea expeditions in the West Pacific, to the Philippines, Solomon Islands, and Vanuatu, recovered a large number of poly-placophorans. We have examined the morphology as well as the range and distribution of these species, based on the larg-est collection ever examined (more than 1300 individuals). These species show potentially adapted characters associatedwith exploitation of sunken wood as habitat, such as protruding caps on sensory shell pores (aesthetes) and large interseg-mental bristles with potential sensory function. In this study we investigated the twenty-two species recovered, includingseven newly described here (Leptochiton consimilis n. sp., L. angustidens n. sp., L. dykei n. sp., L. samadiae n. sp., L.longisetosus n. sp., L. clarki n. sp., L. schwabei n. sp.), and provide the first identification key to the 34 lepidopleuran chitons known from sunken wood worldwide.

Salmoneus durisi sp. nov., an infaunal alpheid shrimp probably associated with callianassid ghost shrimps in the tropical Indo-West Pacific (Malacostraca: Decapoda: Caridea)

Zootaxa ◽  
2019 ◽  
Vol 4651 (1) ◽  
pp. 64-74 ◽  
Author(s):  
ARTHUR ANKER ◽  
HOSSEIN ASHRAFI
Keyword(s):  
New Species ◽  
Solomon Islands ◽  
The Philippines ◽  
Type Locality ◽  
Decapod Crustaceans ◽  
West Pacific ◽  
Suction Pump ◽  
Ghost Shrimp ◽  
A New Species ◽  
Alpheid Shrimp

A new species of the alpheid shrimp genus Salmoneus Holthuis, 1955, probably an obligate associate of ghost shrimp burrows, is described based on material from Oman (type locality: Darsait near Muscat), Iran and the Philippines. Salmoneus durisi sp. nov. is characterised principally by both chelipeds enlarged, robust, with ventral and dorsal margins of chelae carrying long fine setae, and with minor chela fingers armed with a few large teeth on cutting edges. All specimens of Salmoneus durisi sp. nov. were collected either directly from burrows of larger decapod crustaceans with the aid of a suction pump, or by exposing burrows dug under large subtidal rocks. The Iranian specimen was found together with its presumed host, Neocallichirus calmani (Nobili, 1904). Two additional specimens from Indonesia and the Solomon Islands are tentatively assigned to S. cf. durisi sp. nov., awaiting further studies. 

A gigantic deep-sea Nucinellidae from the tropical West Pacific (Bivalvia: Protobranchia)

Zootaxa ◽  
2005 ◽  
Vol 881 (1) ◽  
pp. 1 ◽  
Author(s):  
RAFAEL LA PERNA
Keyword(s):  
Deep Sea ◽  
South Australia ◽  
The Philippines ◽  
The Other ◽  
Present Species ◽  
West Pacific ◽  
Large Size ◽  
Deep Station ◽  
Living Species ◽  
Rapid Diversification

Nucinella boucheti n. sp. is described from a 1610–1580 m deep station in the Philippines (Musorstom 2 Expedition). Nucinellids are typically small, mostly not exceeding 5 mm, but the present species is 25 mm large, being by far the largest nucinellid so far known. The adaptive meaning of this case of gigantism remains open to speculation, but it may be an expression of a rapid diversification of the Holocene nucinellids. Nucinella boucheti n. sp. has numerous, thin and delicate subumbonal teeth, displaying a number of unusual shapes and contrasting with the few, rather coarse and stout teeth of the other nucinellids. This feature is believed to be due to allometric constraints related to the large size. With N. boucheti, 19 living species of nucinellids are known, 14 of which belonging to the genus Nucinella. The Central West Pacific, from Japan to South Australia, is the area with the maximum diversity of nucinellids (11 species).

A new species of Polyonyx Stimpson, 1858 (Crustacea: Decapoda: Anomura:  Porcellanidae) from the Philippines and Loyalty Islands

Zootaxa ◽  
2007 ◽  
Vol 1450 (1) ◽  
pp. 21-29
Author(s):  
MASAYUKI OSAWA
Keyword(s):  
New Species ◽  
The Philippines ◽  
West Pacific ◽  
Pacific Species ◽  
A New Species

A new porcellanid crab, Polyonyx spina, is described from the Philippines and Loyalty Islands. Among the Indo-West Pacific species of the genus, the spines on the flexor margins of the meri of the ambulatory legs are found only in the new species and P. pedalis Nobili, 1905. Polyonyx spina is distinguished from P. pedalis by the shape of the carapace and third thoracic sternite, and the strength of spines on the meri of the ambulatory legs.

Parapleisticantha Yokoya, 1933, a valid genus of deep-sea inachid spider crab from Japan and the Philippines (Crustacea: Decapoda: Brachyura: Majoidea), with the description of a new species

Zootaxa ◽  
2013 ◽  
Vol 3635 (1) ◽  
pp. 15-26 ◽  
Author(s):  
BERTRAND RICHER DE FORGES ◽  
PETER K.L. NG ◽  
SHANE T. AHYONG
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Type Species ◽  
Sensu Stricto ◽  
The Philippines ◽  
Type Material ◽  
Spider Crab ◽  
Valid Genus ◽  
A New Species

The inachid spider crab genus, Parapleisticantha Yokoya, 1933 [type species: Parapleisticantha japonica Yokoya, 1933] is removed from the synonymy of Pleistacantha Miers, 1879 [type species: Pleistacantha sanctijohannis Miers, 1879], and recognised as a valid genus. Parapleisticantha differs from Pleistacantha sensu stricto primarily by having a less spiny carapace, stouter and more inflated male chelipeds, and by lacking a slender subdistal process on the male first gonopod. We redescribe Parapleisticantha japonica based on the Japanese type material and describe as new a second species, Parapleisticantha ludivinae n. sp., recently discovered in thePhilippines.

A new species of Euplectellidae (Porifera: Hexactinellida: Lyssacinosida) from the northwestern Pacific Ocean

2020 ◽  
Vol 96 (1) ◽  
pp. 181-192
Author(s):  
Lin Gong ◽  
Xinzheng Li
Keyword(s):  
Life History ◽  
New Species ◽  
Pacific Ocean ◽  
Deep Sea ◽  
Common Species ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Life History Stages ◽  
Tropical Western Pacific ◽  
A New Species

A new species of the deep-sea sponge Dictyaulus is described from materials collected by the research vessel Ke Xue during its three cruises between 2014 and 2017 to survey seamount biodiversity. The newly described species was one of the only two sponge species found living on all three seamounts investigated. It may be a common species living on seamounts in the tropical western Pacific. All seven known species of Dictyaulus Schulze, 1896 contain floricomes, but each species has special spicules. The new species is easily distinguishable by the presence of discasters, which have previously been reported only in Dictyaulus starmeri Tabachnick and Lévi, 2004, but the latter species possesses sigmatocomes, which are not present in the new species. The five specimens collected display large variation in size, with total lengths from 55 to 610 mm. The specimens differ in the abundance of microsclere types which we consider to be caused not only by differences of their life history stages but also to a greater extent by differences in their living environments.

scholarly journals Gibbosaverruca weijiai, a new verrucid (Crustacea, Thoracica) species from the Weijia Guyot deep-sea seamount in the West Pacific

2021 ◽  
Vol 739 ◽  
Author(s):  
Zhibin Gan ◽  
Dongsheng Zhang ◽  
Xinzheng Li ◽  
Chunsheng Wang
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Shell Morphology ◽  
Future Research ◽  
Caudal Appendage ◽  
The West ◽  
West Pacific ◽  
Extant Species ◽  
A New Species ◽  
Rrna Sequences

A new species of verrucid barnacle, Gibbosaverruca weijiai sp. nov., is described and illustrated based on specimens collected from a deep-sea seamount, Weijia Guyot, in the West Pacific. This is the third barnacle species reported from Weijia Guyot. The new species is distinguished from its congeners by its extremely long caudal appendage. In terms of shell morphology, G. weijiai sp. nov. is most similar to G. gibbosa and G. sulcata but differs from them by the intermediate articular ridges of its movable tergum and scutum, which are distinctly wider than the axial ridges. The COI and 16S rRNA sequences of the holotype of G. weijiai sp. nov. are presented to support future research, and a key to extant species of the genus Gibbosaverruca Young, 2002 is provided.

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