New Crab Species Research Articles

Labile and stable mercury in Harris mud crab (Rhithropanopeus harrisii) from the southern Baltic Sea - Considerations for a role of non-native species in the food web.

Mercury is a potent neurotoxin. Its main source of entry into the human body is the consumption of fish and seafood. Within the past few decades a new species of crab has appeared in the food web of the southern Baltic: Rhithropanopeus harrisii. The aim of the present study was to estimate the level of total and labile mercury concentrations in this species collected from the southern Baltic Sea. Analyses were performed using the thermodesorption method. The share of organic mercury fraction, as well as the Hgtot, increased with the size class of the crabs. Due to the increasingly common occurrence of R. harrisii and the low HgTOT concentration in its body, and assuming that it is bound to become a more and more common component of the diet of fish, it can be supposed that the load of toxic mercury entering the food web is likely to decrease.

A new species ofLyphiraGalil, 2009 (Crustacea, Decapoda, Leucosiidae) from Gujarat, India

A new species of crab belonging to the genus Lyphira Galil, 2009 of the family Leucosiidae Samouelle, 1819, is described from Gujarat state, India. Lyphira georgei n. sp. is distinguished from the related species L. perplexa Galil, 2009, in the shape of main shaft and apical lobe of male first gonopod, shape and size of the male telson as well as size and shape of somite 2 of male abdomen. The details of morphological differences are presented in the report.http://zoobank.org/urn:lsid:zoobank.org:pub:8DC6CACE-4BF9-45F4-B151-CFB2BAF4D82B

A new species of crab (Brachyura: Etyidae) from the late Albian of Germany

A new species of crab (Brachyura: Etyidae) from the late Albian of Germany

A new species of crab (Brachyura: Raninoidia: Cenomanocarcinidae) from the Campanian of Morocco: validation of the genus Hasaracancer Jux, 1971

The crab genus Hasaracancer Jux, 1971 is rehabilitated, and a new species is described from the Upper Campanian Calcaires a slumps de Taghit Formation of Morocco. The raninoid crab Hasaracancer merijaensis n. sp. represents the second species for the genus; the type species H. cristatus Jux, 1971 was reported from the Campanian of Afghanistan. Systematic affinities with the Cenomanocarcinidae are here discussed and confirmed.

Ekalakia(Decapoda: Brachyura): the preservation of eyes links Cretaceous crabs to Jurassic ancestors

Description of a new species of crab,Ekalakia exophthalmops, brings to two the number of species within this Late Cretaceous genus from the upper mid-west in North America. Discovery of eyes and orbital structures in both species permits placement of the genus within the superfamily Glaessneropsoidea Patrulius, 1959 and family Glaessneropsidae Patrulius, 1959, extending the range of those taxa from the Late Jurassic into the Late Cretaceous. The extraordinarily large eyes relative to body size suggests that the Jurassic reef-dwelling crabs were adapted for a cryptic lifestyle which preadapted them for the deep-water, dysphotic, level-bottom habitat occupied by the Cretaceous descendants.

Establishment of the Vultocinidae, a new family for an unusual new genus and new species of Indo-West Pacific crab (Crustacea: Decapoda: Brachyura: Goneplacoidea), with comments on the taxonomy of the Goneplacidae

A new family, Vultocinidae, is established for an unusual new genus and new species of crab (Crustacea: Brachyura: Goneplacoidea) here described from relatively deep waters in the central Philippines and Vanuatu. Although Vultocinus anfractus, new genus, new species, superficially resembles pilumnid genera like Lophoplax and pseudoziid genera like Planopilumnus in its deeply sculptured carapace and leg surfaces, its male abdomen and gonopods appear to affiiliate it with the Goneplacidae sensu lato instead. However, its suite of many unusual characters requires the recognition of a new family for Vultocinus. Comparisons of the Vultocinidae with the Goneplacidae sensu stricto suggests that the subfamily Mathildellinae, presently regarded as a subfamily, should be recognised as a full family; and two other problematic constituent genera, Progeryon and Conleyus, are also referred to their respective families in the Goneplacoidea. The genus Paragalene is also referred to the Progeryonidae. The extent of the sterno-abdominal cavity along the thoracic sternites, structure of the posterior thoracic sternites, position of the press button of the male abdominal locking mechanism and form of the first four male abdominal segment as characters in the taxonomy of the Goneplacoidea is also discussed.

동해산 붉은대게 (Chionoecetes japonicus)와 너도대게 (Chionoecetes sp.)의 식품성분 비교

Recently, relatively large amount of a new species of crab belonging to genus Chionoecetes that has intermediate characteristics between red-tanner crab (Chionoecetes japonicus) and queen crab (C. opilio) was caught the East Sea of Korea. The new species of crab was tentatively named Neodo-Daege. Amino acid and proximate compositions of the edible meat of red-tanner crab and Neodo-Daege were determine. The proximate composition of the meats of Neodo-Daege were <TEX>$79.2{\%}$</TEX> in moisture, <TEX>$17.4{\%}$</TEX> in protein, <TEX>$0.6{\%}$</TEX> in lipid, and <TEX>$1.5{\%}$</TEX> in ash. Neodo-Daege was higher in protein and lipid contents, and lower in moisture and ash contents than those of red-tanner crab. The total amino acid contents in the meat of Neodo-Daege were higher than those of red-tanner crab, but the profile of amino acids was similar to one another. Among amino acids, glutamic acid, arginine, aspartic acid, lysine and glycine were major components of the crabs.

FOSSIL CRABS FROM TEPEE BUTTES, SUBMARINE SEEPS OF THE LATE CRETACEOUS PIERRE SHALE, SOUTH DAKOTA AND COLORADO, U.S.A.

Tepee Buttes are low conical hills which occur in scattered clusters along the strike of the Late Cretaceous Pierre Shale near Pueblo, Colorado, and around the Black Hills of South Dakota, Montana, and Wyoming. These erosional landforms develop around resistant columnar limestone masses thought to have been deposited by warm, methane-rich, submarine springs within relatively homogeneous, less resistant claystones. Origin of the Tepee Buttes is attributed to dewatering of underlying claystones. The submarine springs provided a unique habitat on the Western Interior Cretaceous sea bottom for growth of large populations of the lucinid bivalve, Nymphalucina occidentalis, often preserved in living position in reef-like masses encircling the spring vents. Concentration of abundant biomass immediately around the spring vents formed the basis of communities preserved as the Nymphalucina Assemblage dominated by N. occidentalis, but including ammonoid cephalopods, other bivalved mollusks, gastropods, foraminiferans, and a few decapod crustaceans. Fragments of grounded fossilized gymnosperm and angiosperm wood riddled with Teredo borings are also found on the vent cores. Twenty specimens of decapod crustaceans representing three new species of crabs were collected from Tepee Buttes near Oelrichs and Newell, South Dakota, and collecting near Pueblo, Colorado, yielded specimens belonging to three new species, as well as one specimen of Hoplitocarcinus punctatus. The new taxa include Heus foersteri, new genus and species, Raninella manningi, new species (family Raninidae), and Plagiophthalmus bjorki, new species (family Prosopidae ). Descriptions, illustrations, and comparisons of new taxa with previously described members of the family are given.

New Middle Danian species of anomuran and brachyuran crabs from Fakse, Denmark

One new genus and four new species of crabs (Crustacea, Decapoda) from the Middle Danian Tylocidaris bruennichi Zone of Fakse, Denmark are described. These include the anomuran crab Faxegalatheaplatyspinosa gen. et sp. nov. and the brachyuran crabs Homolopsis spiniga sp. nov., Eohomola affinis sp. nov. and Xanthosia gracilis sp. nov. All known crabs from Fakse are listed and some are illustrated photographically for the first time.

A new cancrid crab from New Zealand

Abstract A new species of crab, Lobocarcinus pustulosus Cancridae: Lobocarcininae), is described from a single near‐complete specimen from the Caversham Sandstone (early Altonian Stage, late early Miocene) near Waikouaiti, Otago, South Island, New Zealand. The specimen represents the first report of the genus in the Pacific region and only the second genus of cancrid crab to have been recorded from New Zealand.

On a new species of pilumnid crab,Rhizopa yangaesp. nov. from Singapore, with notes on the genusRhizopaStimpson, 1858 (Decapoda: Brachyura: Pilumnidae)

A new species of crab of the family Pilumnidae, Rhizopa yangae sp. nov. is described from a male collected from Singapore. The genus Rhizopa Stimpson, 1858 is also briefly reviewed, and a key provided to the known species.

A New Species of Crab (Brachyura, Hapalocarcinidae) Inhabiting Pocilloporid Corals in Hawaii

[Une nouvelle espece Hapalocarcinide, Pseudocryptochirus kahe, d'Hawaii est decrite. Notes sur les variations morphologiques sont presentees avec une discussion de l'ecologie de l'espece., Une nouvelle espece Hapalocarcinide, Pseudocryptochirus kahe, d'Hawaii est decrite. Notes sur les variations morphologiques sont presentees avec une discussion de l'ecologie de l'espece.]

Two new genera and three new species of crabs (Decopoda : Anomura : Albuneidae) from Australia

Austrolepidopa, gen. nov., and Stemonopa, gen. nov., are described. Austrolepidopa contains two species: A. schmitti, sp. nov., from Queensland and A. trigonops, sp. nov., from Western Australia. Stemonopa is represented by a single species: S. insignis, sp. nov., from Western Australia. A key to the genera of Albuneidae is given and the relationships of the new genera are discussed. Austrolepidopa is most closely allied to Lepidopa and Stemonopa to Albunea.

IV.—Description of a new species of crab of the genus Clistocœloma from China

(1933). IV.—Description of a new species of crab of the genus Clistocœloma from China. Annals and Magazine of Natural History: Vol. 12, No. 67, pp. 52-59.

Description of a new species of crab from the California Pliocene

Description of a new species of crab from the California Pliocene

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 34.] New species of crabs of the families Inachidae and Parthenopidae

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 34.] New species of crabs of the families Inachidae and Parthenopidae

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 31.] New species of crabs of the families Grapsidae and Ocypodidae

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 31.] New species of crabs of the families Grapsidae and Ocypodidae

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 32.] A new genus and some new species of crabs of the family Goneplacidae

Scientific results of the Philippine cruise of the Fisheries steamer Albatross, 1907-1910.—No. 32.] A new genus and some new species of crabs of the family Goneplacidae

Descriptions of new species of crabs of the families Grapsidae and Ocypodidae

Descriptions of new species of crabs of the families Grapsidae and Ocypodidae

Descriptions of new species of crabs of the family Ocypodidae

Descriptions of new species of crabs of the family Ocypodidae