Himalayapotamon chambaensis, a new species of freshwater crab (Crustacea: Brachyura: Potamidae) from Himachal Pradesh, India

Zootaxa ◽  
2017 ◽  
Vol 4324 (3) ◽  
pp. 482
Author(s):  
SANTANU MITRA ◽  
KANDASAMY VALARMATHI

A new species of freshwater crab of the genus Himalayapotamon Pretzmann, 1966, is described based on specimens collected from various localities in Chamba District in Himachal Pradesh state, northern India. Himalayapotamon chambaensis n. sp. can be distinguished from congeners by several carapace and gonopod characters: a short median longitudinal granular ridge behind the frontal margin which reaches to the epigastric regions, the terminal segment of the male first gonopod is long and distinctly bent outwards, and the male second gonopod has a long and distally coiled distal segment. An identification key to all the 12 species in the genus is provided. 

Crustaceana ◽  
2021 ◽  
Vol 94 (9) ◽  
pp. 1059-1070
Author(s):  
Da Pan ◽  
Boyang Shi ◽  
Hongying Sun

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.


Crustaceana ◽  
2020 ◽  
Vol 93 (7) ◽  
pp. 703-725
Author(s):  
Sameer K. Pati ◽  
Santanu Mitra ◽  
Peter K. L. Ng

Abstract The identity of the potamid freshwater crab, Indochinamon manipurense (Alcock, 1909) from the state of Manipur in northeast India, is clarified based on an examination of the type specimens. The species is redescribed and a lectotype designated. Specimens from the same region previously referred to this species were compared to the types of I. manipurense and shown to belong to a new species of Potamiscus Alcock, 1909, instead. The new species, Potamiscus takedai sp. nov., can easily be separated from I. manipurense by the characters in the carapace, third maxilliped, male pleon, male gonopods, and female vulvae. Potamiscus takedai sp. nov. can be differentiated from congeners mainly by the strongly bent terminal segment of the male first gonopod and a relatively shorter distal segment of the male second gonopod.


Zootaxa ◽  
2017 ◽  
Vol 4237 (1) ◽  
pp. 191 ◽  
Author(s):  
S.K. PATI ◽  
S. SINGH

A new species of potamid freshwater crab, Himalayapotamon garhwalense n. sp., is described from a stream near Khanda in Pauri Garhwal district of Uttarakhand, India. The new species is differentiated from all congeners by a suite of carapace and gonopod features, including the short, stout and conical G1 terminal joint with gradually tapered distal portion. Himalayapotamon Pretzmann, 1966, is now represented by 11 species including H. garhwalense n. sp. An identification key to the species in the genus is provided. 


Zootaxa ◽  
2011 ◽  
Vol 3063 (1) ◽  
pp. 53 ◽  
Author(s):  
PETER K. L. NG ◽  
HASKO F. NESEMANN ◽  
GOPAL SHARMA

A new species of hymenosomatid freshwater crab, Neorhynchoplax Sakai, 1938, is described from Patna, Bihar, northern India. The species resembles the Indian N. woodmasoni (Alcock, 1895) and N. alcocki Kemp, 1917, but differs in the form of the carapace, armature on the cheliped merus, number of spines on the dactylus of the ambulatory legs, and structure of the male abdomen.


Zootaxa ◽  
2019 ◽  
Vol 4674 (2) ◽  
pp. 203-214
Author(s):  
S.K. PATI ◽  
P.S. SUJILA ◽  
A.R. SUDHA DEVI

A new species of the hitherto monotypic gecarcinucid freshwater crab genus, Arcithelphusa Pati & Sudha Devi, 2015, is described from the Western Ghats, in the Wayanad district of Kerala, India. Arcithelphusa tumpikkai sp. nov. can be easily distinguished from the only congener, A. cochleariformis Pati & Sudha Devi, 2015, mainly by its relatively broader carapace, the presence of a short flagellum on the exopod of the third maxilliped, and the relatively less stout male first gonopod, with a sharply bent and relatively long terminal segment. The diagnosis for Arcithelphusa is emended to include the new species, which can be useful in distinguishing it from the closely related genus Cylindrotelphusa Alcock, 1909. The state of Kerala now has 38 species of gecarcinucid crabs, including the present new species. 


Zootaxa ◽  
2018 ◽  
Vol 4500 (4) ◽  
pp. 587 ◽  
Author(s):  
SANTANU MITRA ◽  
ARAJUSH PAYRA ◽  
KAILASH CHANDRA

A new species of potamid crab of the genus Teretamon Yeo & Ng, 2007, is described from Namdapha Tiger Reserve in Changlang district of Arunachal Pradesh, India. The new species, T. kempi n. sp., can be distinguished from its congeners by a distinct combination of carapace and gonopod characters: a relatively high carapace with a bilobed frontal margin; subquadrate sixth abdominal somite with nearly parallel lateral margins; and a relatively small G1 terminal segment with a semicircular to bluntly triangular dorsal flap. All known Teretamon species are compared with the new species, and a key for this genus is provided. 


PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9194
Author(s):  
Song-Bo Wang ◽  
Ya-Nan Zhang ◽  
Jie-Xin Zou

A new species of freshwater crab of the genus Qianguimon Huang, 2018, is described from Guangxi Zhuang Autonomous Region, southern China. It can be distinguished from congeners by the following characters: male first gonopods bent inward at about 45° at base of terminal segment, carapace regions distinct and rugged and the female vulva opening inwards and downwards. In addition, molecular evidence derived from the 16S rRNA gene supported the species described in this study as a new species of Qianguimon.


Zootaxa ◽  
2012 ◽  
Vol 3528 (1) ◽  
pp. 49
Author(s):  
S. K. PATI ◽  
R. M. SHARMA

A new species of freshwater crab of the genus Oziotelphusa Müller, 1887 is described based on specimens collected froma rice field near Balakrushnapur, Ganjam district in Odisha (Orissa) state, eastern India. Oziotelphusa ganjamensis n. sp.is easily differentiated from its congeners by a distinct first gonopod (G1) having terminal segment bent outwards, whosetip is upturned and pointed, and subterminal segment relatively broad in the basal half to two-third portion and then sharply narrows to appear slender in distal half to two-third portion. A key to the Indian species of Oziotelphusa is also provided.


Zootaxa ◽  
2020 ◽  
Vol 4838 (4) ◽  
pp. 475-490
Author(s):  
SANTANU MITRA ◽  
THINGBAIJIAM MONICA ◽  
MEMA DEVI WAIKHOM

A new species of potamid crab of the genus Badistemon Yeo & Ng, 2007, is described from Kamjong district of Manipur, India. Badistemon fulvum n. sp., can be distinguished from congeners by a distinct combination of carapace and gonopod characters: carapace subquadrate, convex, dorsal surface glabrous, cervical groove superficial, anterolateral margin longer than posterolateral margin; cornea relatively large; sixth male pleonal somite trapezoidal in shape, male telson broader than long; terminal segment of male first gonopod relatively long, outwardly bent, sub cylindrical with low and short dorsal flap, tip pointed, groove for male second gonopod terminal. Holotype and paratypes of Potamiscus pealianus (Wood-mason, 1871) are re-examined, and the species is here referred to Badistemon as carapace morphology and male gonopods characters are found congeneric with the genus. A key for all the three species of Badistemon are provided. 


Zootaxa ◽  
2017 ◽  
Vol 4363 (2) ◽  
pp. 291
Author(s):  
ANIL KUMAR DUBEY

A new species of whitefly, Setaleyrodes machili Dubey sp. nov. found infesting Machilus odoratissima Nees (Lauraceae) is described from Kufri in Himachal Pradesh and Dhanaulti and Nainital in Uttarakhand, India. The diagnostic characteristics of puparia and habitus, are illustrated with line drawings and scanning electron microphotographs. Sexual dimorphism and variation in pigmentation during the transformation of instars are noted. An identification key to puparia of Setaleyrodes species so far described is presented. 


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