Architecture and Morphological Characters of the Burrows of Freshwater Crab Barytelphusa Cunicularis (Westwood, 1836)

2011 ◽  
Vol 3 (7) ◽  
pp. 645-649 ◽  
Author(s):  
Dr. Shipra Sinha ◽  
Keyword(s):  
Morphological Characters ◽  
Freshwater Crab

A new species of freshwater crab of the genus Teretamon Yeo & Ng, 2007 (Decapoda, Brachyura, Potamidae) from southwestern Yunnan, China

Crustaceana ◽  
2021 ◽  
Vol 94 (9) ◽  
pp. 1059-1070
Author(s):  
Da Pan ◽  
Boyang Shi ◽  
Hongying Sun
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Morphological Characters ◽  
Terminal Segment ◽  
Identification Key ◽  
Freshwater Crab ◽  
A New Species

Abstract A new species of freshwater crab of the genus Teretamon Yeo & Ng, 2007, Teretamon husicum sp. nov., is described here from Husa Town, Longchuan County, Dehong Prefecture, Yunnan Province, China. Teretamon husicum sp. nov. can be distinguished from other species by a suite of morphological characters, including a bilobed frontal margin, smooth posterolateral regions, and a broadly rounded dorsal flap on the G1 terminal segment. An updated identification key for the species of the genus Teretamon is provided.

Geothelphusa makatao sp. nov. (Crustacea: Brachyura: Potamidae), a new freshwater crab from an uplifted Pleistocene reef in Taiwan

Zootaxa ◽  
2009 ◽  
Vol 2106 (1) ◽  
pp. 51-60 ◽  
Author(s):  
HSI-TE SHIH ◽  
JHY-YUN SHY
Keyword(s):  
Phylogenetic Analysis ◽  
Mitochondrial Dna ◽  
New Species ◽  
Morphological Characters ◽  
Similar Species ◽  
Freshwater Crab ◽  
Closely Related Species ◽  
Dna Evidence ◽  
Southwestern Taiwan ◽  
A New Species

A new species of potamid freshwater crab, Geothelphusa makatao, is described from southwestern Taiwan, based on morphological characters and mitochondrial DNA evidence. The new species differs from close congeners, G. pingtung Tan & Liu, 1998, G. shernshan Chen, Cheng & Shy, 2005, and G. ancylophallus Shy, Ng & Yu, 1994 and a superficially similar species, G. albogilva Shy, Ng & Yu, 1994, in the structure of its ambulatory legs, thoracic sternum, male abdomen, and male first pleopods. The unique gene sequences of 16S rRNA and cytochrome oxidase I also support the recognition of this coastal population, which is isolated from other closely related species inhabiting montane areas. Except for G. makatao, the phylogenetic analysis showed that there are three additional hill subclades within the G. pingtung clade, G. shernshan, G. pingtung and the Liangshan subclade, situated in different watersheds of rivers or streams near the Central Range in the southwestern Taiwan.

Juvenile development of Dilocarcinus pagei Stimpson, 1861 (Brachyura, Trichodactylidae) reared in the laboratory, with emphasis on setae morphology

Crustaceana ◽  
2013 ◽  
Vol 86 (13-14) ◽  
pp. 1644-1663 ◽  
Author(s):  
Rony R. R. Vieira ◽  
Paulo J. Rieger ◽  
Viviane Cichowski ◽  
Marcelo A. A. Pinheiro
Keyword(s):  
Sexual Dimorphism ◽  
Water Hyacinth ◽  
Morphological Characters ◽  
Juvenile Stage ◽  
Freshwater Crab ◽  
The Third ◽  
Laboratory Conditions ◽  
Juvenile Stages ◽  
Juvenile Development ◽  
Dilocarcinus Pagei

The juvenile development of the freshwater crab Dilocarcinus pagei Stimpson, 1861 was studied under laboratory conditions, focusing on setae morphology. The ovigerous females were collected manually associated with water hyacinth at the Municipal Dam of São José do Rio Preto (São Paulo, Brazil). The specimens were raised in the laboratory under constant aeration, photoperiod (12 : 12 h) and temperature (27 ± 1°C). Twelve juvenile stages were obtained with descriptions of the main morphological characters that allow their identification are presented. Fourteen types of setae were discovered: dentate, denticulate, serrulate, papposerrate, cuspidate, plumose, plumodenticulate, plumoserrulate, simple, pappose, brush, curved, nail and setules. The greatest diversity of setae was found on the mouth appendages, especially the maxillule. The gill ontogeny and sexual dimorphism becomes apparent from the second juvenile stage onwards. At the third juvenile stage, the carapace begins to exhibit a wider shape, becoming similar to that of the adults.

scholarly journals Morphological and molecular analyses reveal three new endemic species of the freshwater crab genus Buea Cumberlidge, Mvogo Ndongo, Clark & Daniels, 2019 (Crustacea: Brachyura: Potamonautidae) from a rainforest biodiversity hotspot in Cameroon, Central Africa

2020 ◽  
Vol 40 (3) ◽  
pp. 288-300
Author(s):  
Pierre A Mvogo Ndongo ◽  
Thomas von Rintelen ◽  
Minette Tomedi-Tabi Eyango ◽  
Neil Cumberlidge
Keyword(s):  
New Species ◽  
National Parks ◽  
Conservation Status ◽  
Central Africa ◽  
Morphological Characters ◽  
12S Rrna ◽  
Freshwater Crab ◽  
Distinct Lineage ◽  
Southwest Region ◽  
Three New Species

Abstract Three new species of the Cameroonian endemic freshwater crab genus Buea  Cumberlidge, Mvogo Ndongo, Clark & Daniels, 2019 are described. The new species were collected from protected areas in the Southwest region of Cameroon, the Korup and Bakossi National Parks and the Mt. Nlonako Ecological Reserve. These species are distinguished from each other and from the type species of the genus, Buea asylos (Cumberlidge, 1993), by a combination of morphological characters (carapace, thoracic sternum, chelipeds, and male first gonopod) and by partial sequences of three mitochondrial DNA genes (COI, 12S rRNA, and 16S rRNA). A phylogenetic analysis that included representatives of all other freshwater crab genera found in Cameroon recovered each of the new species as a well-supported distinct lineage. An identification key is also provided for the four species of Buea and the conservation status of the new species is discussed.

Phylogenetic relationships among Neotropical freshwater crabs of the Pseudothelphusidae (Decapoda, Brachyura) and the taxonomic position of Ptychophallus and related genera

Crustaceana ◽  
2016 ◽  
Vol 89 (14) ◽  
pp. 1717-1728 ◽  
Author(s):  
Theodor S. Poettinger ◽  
Sebastian Klaus ◽  
Christoph D. Schubart
Keyword(s):  
South America ◽  
Molecular Phylogeny ◽  
Phylogenetic Relationships ◽  
Morphological Characters ◽  
Lesser Antilles ◽  
Greater Antilles ◽  
Freshwater Crab ◽  
Northern Mexico ◽  
Freshwater Crabs ◽  
The Family

The primary freshwater crab family Pseudothelphusidae is distributed with almost 300 described species from northern Mexico to the southern tributaries of the Amazon, including most of the Greater and Lesser Antilles. Its systematic grouping is solely based on morphological characters. The most recent and commonly applied classification distinguishes two subfamilies, the Epilobocerinae on the Greater Antilles, and the Pseudothelphusinae on the mainland of Central and South America and the Lesser Antilles (Rodríguez, 1982). In addition, several tribes are recognized based on the morphology of the first pair of male pleopods, the so called gonopods: the Pseudothelphusini, the Potamocarcinini, the Hypolobocerini, the Kingsleyini, and the Strengerianini. Here, we present the first molecular phylogeny of the Pseudothelphusidae, including representatives of all the subfamilies and tribes. The generaAchlidon,Allacanthos, andPtychophallusform a strongly supported monophyletic unit, clustering independently of the tribi where they have been classified so far. We present preliminary suggestions for a possibly derived taxonomy of the family.

scholarly journals Echoes from the past – the identity of Sundathelphusa picta (von Martens, 1868) and descriptions of two new species of freshwater crab (Crustacea, Brachyura, Gecarcinucidae, Sundathelphusa) from Luzon Island, the Philippines

2020 ◽  
Vol 14 (2) ◽  
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
The Philippines ◽  
Type Locality ◽  
Type Material ◽  
Freshwater Crab ◽  
The Past ◽  
Two New Species

The poorly known Philippine freshwater crab, Sundathelphusa picta (von Martens, 1868) from Luzon Island is re-described and re-illustrated, using type material as well as other specimens sampled from near its type locality. Two similar congeners from Luzon, S. uva sp. nov. and S. angelito sp. nov., from the provinces of Bataan and Rizal, respectively, are described as new. These three species are united by their relatively small size, rounded and dome-shaped carapaces, proportionately short ambulatory legs, and stout male first gonopods. They are distinguished from each other by a suite of morphological characters, particularly of the carapace, male pleon and gonopods.

Potamonautes nheenae, a new species of freshwater crab from Gabon, Central Africa, with a description of the first known male of Erimetopus brazzae (A. Milne-Edwards, 1886) from the Democratic Republic of the Congo, Central Africa (Brachyura: Potamoidea: Potamonautidae)

Zootaxa ◽  
2017 ◽  
Vol 4286 (2) ◽  
pp. 228 ◽  
Author(s):  
NEIL CUMBERLIDGE
Keyword(s):  
New Species ◽  
Democratic Republic ◽  
Central Africa ◽  
Morphological Characters ◽  
Freshwater Crab ◽  
Male Specimen ◽  
Congo River Basin ◽  
Comparative Zoology ◽  
Republic Of The Congo ◽  
A New Species

A new species of the freshwater crab genus Potamonautes MacLeay, 1838, is described from Ivindo National Park in Sofala Province, Gabon, Central Africa. Potamonautes nheenae n. sp. is morphologically distinct from the other species of this genus found in Gabon and nearby countries in Central Africa, and is most closely related to P. paecilei (A. Milne-Edwards, 1886) from the Lower Congo River basin in the Democratic Republic of the Congo. The new species is recognised by a unique combination of morphological characters of the adult male first gonopod, anterior sternum, mouthparts, and major cheliped. Illustrations of P. nheenae n. sp. are provided and differences with congeners found in Central Africa are discussed. In addition, the male gonopods, pleon, and sternum of the unusual freshwater crab Erimetopus brazzae (A. Milne-Edwards, 1886), are illustrated for the first time since its description in 1886, following the discovery of the first known male specimen of this species in the collection of the Museum of Comparative Zoology at Harvard University. 

New lineages within the Malagasy freshwater crab fauna: Agora n. gen. for Thelphusa goudoti H. Milne Edwards, 1853, and a phytotelmic new species of Malagasya Cumberlidge & Sternberg, 2002 (Brachyura: Potamonautidae: Deckeniinae)

2020 ◽  
Vol 40 (5) ◽  
pp. 584-599
Author(s):  
Neil Cumberlidge ◽  
Julia B Soma ◽  
Ellen M Leever ◽  
Savel R Daniels
Keyword(s):  
New Species ◽  
Phylogenetic Tree ◽  
Morphological Characters ◽  
Molecular Data ◽  
The Other ◽  
New Genera ◽  
Freshwater Crab ◽  
Tropical Island ◽  
Freshwater Crabs ◽  
A New Species

Abstract New molecular and morphological analyses of the relationships of 77 specimens of potamonautid freshwater crabs collected from all parts of Madagascar support the monophyly of the island’s freshwater crab fauna and verify most of the existing taxa. The phylogenetic tree identified several new lineages that represent four new genera and 10 new species, and found Foza Reed & Cumberlidge, 2006 to be paraphyletic. The present work is the first of a series of articles reporting on these discoveries that provide an improved understanding of the relationships between the endemic potamonautid species found on this tropical island. We describe a new species of Malagasya Cumberlidge & Sternberg, 2002 from a phytotelmic habitat in northeast Madagascar, and establish Agoragen. nov. to accommodate Thelphusa goudoti H. Milne Edwards, 1853. Both of these new taxa are recognized based on combinations of morphological characters and molecular data. The new species of Malagasya is distinguished from the other two species of this genus, which are illustrated here for comparative purposes. Agora goudotin. comb. is endemic to Madagascar, and is compared with and distinguished from the eight other genera of freshwater crabs occurring in that country.

An updated checklist and key to the Zambian species of freshwater crabs, with the description of a new species of Potamonautes MacLeay, 1838 (Brachyura: Potamoidea: Potamonautidae)

2019 ◽  
Vol 39 (4) ◽  
pp. 419-425
Author(s):  
Neil Cumberlidge ◽  
Clare Fastiggi ◽  
Paul F Clark
Keyword(s):  
New Species ◽  
Adult Male ◽  
Southern Africa ◽  
Morphological Characters ◽  
Freshwater Crab ◽  
Unique Combination ◽  
Number Of Species ◽  
Freshwater Crabs ◽  
Major Cheliped ◽  
A New Species

Abstract A new species of the freshwater crab genus PotamonautesMacLeay, 1838 from Mporokoso, northern Zambia, southern Africa is described. Potamonautes caputanatisn. sp. is morphologically distinct from other species of this genus found in Zambia and its neighboring countries. The new species is recognised by a unique combination of morphological characters of the carapace, thoracic sternum, major cheliped, and adult male first gonopod. Illustrations of P. caputanatisn. sp. are provided and differences with congeners found elsewhere in Zambia and southern Africa are discussed. The addition of P. caputanatis n. sp. raises the number of species of freshwater crabs known to occur in Zambia to eleven. An updated checklist and key are provided to the Zambian species of freshwater crabs.

scholarly journals Redescription of Austrothelphusa wasselli (Bishop, 1963) (Crustacea: Brachyura: Gecarcinucidae), and designation of a new species from the Gilbert River, north Queensland, Australia

Zootaxa ◽  
2018 ◽  
Vol 4369 (1) ◽  
pp. 109 ◽  
Author(s):  
MURTADA D. NASER ◽  
PETER J. F. DAVIE ◽  
NATHAN J. WALTHAM
Keyword(s):  
New Species ◽  
Drainage Basin ◽  
Morphological Characters ◽  
Freshwater Crab ◽  
River Catchment ◽  
North East ◽  
The North ◽  
Cape York ◽  
North Western ◽  
A New Species

A new species of freshwater crab, Austrothelphusa gilbertensis, is described from Gilbert River Catchment, north-western Queensland. It is morphologically most similar to A. wasselli Bishop, 1963, described from the eastward flowing Stewart Drainage Basin, much further to the north-east on Cape York. It differs from A. wasselli by several morphological characters including, better defined gastro-cardiac carapace grooves, cervical groove relatively deeper, postfrontal lobes more prominent and bearing striated crests, larger and fewer spots on carapace and legs, epibranchial tooth more prominent, walking legs more slender, and G1 more strongly curved. A CO1 genetic divergence of greater than 6% confirms its novel status. Intraspecific CO1 divergence within catchments is also discussed. 

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