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

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.

Zootaxa ◽  
2011 ◽  
Vol 3018 (1) ◽  
pp. 66 ◽  
Author(s):  
A. J. BRUCE

The pontoniine shrimp genus Ancylomenes Okuno & Bruce, 2009 now includes 17 Indo-West Pacific species (Okuno & Bruce 2009). With a few exceptions, such as A. aesopius (Bate, 1863) and A. longicarpus (Bruce & Svoboda, 1983), these present a highly consistent morphology, differing at species level principally in details of the rostrum, third abdominal somite, ophthalmic process, dentition of the second pereiopod chelae, and ambulatory propods and dactyls. This consistency renders detailed descriptions repetitive and largely redundant.


Zootaxa ◽  
2020 ◽  
Vol 4816 (3) ◽  
pp. 333-349 ◽  
Author(s):  
SHANE T. AHYONG ◽  
PETER K.L. NG

Three new Indo-West Pacific species of pinnotherid crabs are described, one each of Arcotheres, Buergeres and Nepinnotheres. Arcotheres pollus, described from Paway Island, Mergui Archipelago, is most similar to A. boninensis (Stimpson, 1858), A. pernicola (Bürger, 1895) and A. purpureus (Alcock, 1900), sharing a transversely ovate carapace and long, slender, almost styliform dactyli of P4 and 5 that are about twice the length of those of P2 and 3. Buergeres choprai, described from Papua New Guinea, is most similar to B. deccanesis (Chopra, 1931) from eastern India but differentiated by segment proportions and setation of the walking legs. Buergeres tenuipes (Bürger, 1895) is synonymised with B. ortmanni (Bürger, 1895), which is also reported for the first time from Indonesia. A male of an undetermined species of Buergeres from the Philippines, possibly B. ortmanni, is figured and described, documenting the gonopod morphology in Buergeres for the first time. A key to the species of Buergeres based on females is provided. Nepinnotheres fulvia sp. nov. is also described from Papua New Guinea, and resembles N. cardii (Bürger, 1895) from the Philippines and Malaysia but can be distinguished by features of the chelipeds and maxilliped 3. 


Zootaxa ◽  
2011 ◽  
Vol 2889 (1) ◽  
pp. 35 ◽  
Author(s):  
PETER K. L. NG ◽  
PETER J. F. DAVIE

A new species of Labuanium Serène & Soh, 1970, L. vitatum is described from northeastern Indian Ocean. It belongs to the L. rotundatum species-group, but is most closely related to L. scandens Ng & Liu, 2003, and L. papuomalesiacum (Nobili, 1899), the latter being here formally removed from synonymy with L. rotundatum (Hess, 1865) and raised to full species status. The new species differs from congeners by numerous characters including the structure of the male first pleopod, carapace and third maxillipeds, and by differences in proportions of the male abdominal somites.


Zootaxa ◽  
2019 ◽  
Vol 4651 (1) ◽  
pp. 64-74 ◽  
Author(s):  
ARTHUR ANKER ◽  
HOSSEIN ASHRAFI

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. 


Zootaxa ◽  
2004 ◽  
Vol 514 (1) ◽  
pp. 1 ◽  
Author(s):  
SHIREEN J. FAHEY

A new species of Trapania Pruvot-Fol, 1931 is described from near Rottnest Island, Western Australia. The new species Trapania safracornia shares several characteristics with other species of Indo-West Pacific Trapania. Those characters include a soft elongate body, no distinct mantle edge, two sets of curved dorsal lateral processes, non-retractile gill and rhinophores with no pockets, a radular formula of N x 1.0.1, a long tubular prostate and both a bursa copulatrix and a receptaculum seminis on the exogenous sperm duct. Characters that distinguish this as a new species include external red-brown coloration without any white spots, symmetrical white patches overlaid with yellow pigment, a yellow-tipped tail and lateral processes and a translucent red rhinophore club. Trapania safracornia also differs from the most externally similar species T. brunnea Rudman, 1987 in the radular morphology. Trapania safracornia has 10-14 main denticles per lateral tooth and up to eight additional small denticles between these. There is one small triangular denticle on the outside of the largest cusp at the base. The jaw rodlets of this new species are straight and pointed. A comparison between Trapania safracornia and other Indo-Pacific species of Trapania is presented.


Zootaxa ◽  
2019 ◽  
Vol 4651 (1) ◽  
pp. 1-37 ◽  
Author(s):  
WILLIAM F. SMITH-VANIZ ◽  
STEPHEN J. WALSH

Diagnoses, comparisons, photographs and distribution maps are given for three previously described Indo-West Pacific species of Trachinotus that develop spots on their sides as adults. A new species, Trachinotus macrospilus, is described from the Marquesas Islands where it is endemic and the only species of the genus present. It differs from the other spotted Indo-West Pacific species most noticeably in having adults with only one or two large spots on each side, the largest spot larger than the iris diameter, and in having no large spot positioned above the pectoral fin. An identification key is given for all Indo-West Pacific species of Trachinotus and a molecular phylogeny, including 16 of the 20 valid species of Trachinotus is presented. A neotype is designated for Scomber botla Shaw, 1803. 


Zootaxa ◽  
2020 ◽  
Vol 4763 (2) ◽  
pp. 217-230
Author(s):  
MING KAI TAN ◽  
JESSICA B. BAROGA-BARBECHO ◽  
RAZY JAPIR ◽  
ARTHUR Y. C. CHUNG ◽  
RODZAY BIN HAJI ABDUL WAHAB ◽  
...  

Rhicnogryllus Chopard, 1925 is a small and relatively unknown group of Sword-tailed Cricket of the subfamily Trigonidiinae. This genus currently comprises 12 species from Asia, Africa (including Madagascar), South America and the Pacific. Species have been recognised by the presence of parallel and elevated veins in both males (which lack stridulatory organs) and females. However, this approach to classifying Trigonidiinae may be outdated and examination of male genitalia can offer better insights into the generic status of these species and how they are related or unrelated. By comparing male genitalia of new materials and old specimens, we describe a new species from the Philippines: Rhicnogryllus? paetensis n. sp., which is similar to the type species. Our hypothesis is that Rhicnogryllus is a non-monophyletic and artificial genus, and that the genus should comprise only Southeast Asian members (since the type species Rhicnogryllus fascipes Chopard, 1925 is known from the Philippines). We are cautiously against describing new genus to avoid adding more confusion until a comprehensive revision to the subfamily and Rhicnogryllus has been undertaken. 


Zootaxa ◽  
2018 ◽  
Vol 4429 (2) ◽  
pp. 303 ◽  
Author(s):  
MASAYUKI OSAWA ◽  
TOHRU NARUSE ◽  
PETER K. L. NG

Five species of the genus Polyonyx Stimpson, 1858 are reported from southern Japan, the Philippines, Singapore, and Peninsular Malaysia. All of them belong to the P. sinensis group, which is morphologically defined by having the dactyli of the ambulatory legs each with the dorsal claw being much smaller than the ventral claw. Two species are described as new to science, one each from Peninsular Malaysia and the Ryukyu Islands in Japan, and their affinities are discussed. Polyonyx boucheti Osawa, 2007, P. heok Osawa & Ng, 2016, and P. thai Werding, 2001, are also newly reported from southern Japan, the Philippines, and Singapore. A key to the Indo-West Pacific species of the P. sinensis group is provided. 


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