On Indian species of <i>Nanosesarma</i> Tweedie, 1950 (Decapoda: Brachyura: Sesarmidae)

Padate, Vinay P.; Patel, Krupal J; Rivonker, Chandrashekher U.; Trivedi, Jigneshkumar N.

doi:10.1590/2358-2936e2022031

Vinay P. Padate

Government of India, Ministry of Earth Sciences, Centre for Marine Living Resources & Ecology. Atal Bhavan, LNG Terminus Road, Puthuvype, Cochin, Kerala, India.

http://orcid.org/0000-0002-2244-8338

Krupal J Patel

The Maharaja Sayajirao University of Baroda, Department of Zoology, Marine Biodiversity and Ecology Laboratory. Vadodara-390002, Gujarat, India.

Hemchandracharya North Gujarat University, Department of Life Science, Animal Taxonomy and Ecology Laboratory. Patan-384265, Gujarat, India.

http://orcid.org/0000-0003-0810-4210

Chandrashekher U. Rivonker

Goa University, School of Earth, Ocean and Atmospheric Sciences. Taleigao, Goa, India.

http://orcid.org/0000-0002-5828-5032

Jigneshkumar N. Trivedi

Hemchandracharya North Gujarat University, Department of Life Science, Animal Taxonomy and Ecology Laboratory. Patan-384265, Gujarat, India.

http://orcid.org/0000-0002-1308-7104

VPP E-mail: vinaypadate@gmail.com

KP E-mail: kjpatel8460@gmail.com

CR E-mail: curivonker@gmail.com

JT Email: jntrivedi26@yahoo.co.in

CORRESPONDING AUTHOR

Jigneshkumar N. Trivedi jntrivedi26@yahoo.co.in

Associate Editor:

Shane Ahyong

Authors Contribution

Conceptualization: VPP, CUR, JNT. Performed research: VPP, KJP, CUR, JNT. Acquisition of data: VPP, KJP, CUR, JNT. Analysis and interpretation of data: VPP, KJP, CUR, JNT. Preparation of figures/tables/maps: KJP and JNT. Writing - original draft: VPP, KJP, CUR, JNT. Writing - critical review & editing: VPP, KJP, CUR, JNT.

Competing interests

The authors declare no competing interest.

Species characters	Nanosesarma andersoni ( De Man, 1888De Man JG 1888. Report on the podophthalmous Crustacea of the Mergui Archipelago, collected for the Trustees of the Indian Museum, Calcutta, by Dr. John Anderson, F.R.S., Superintendent of the Museum. Part III. Journal of the Linnean Society of London (Zoology), 22: 129-176. DOI: 10.1111/j.1096-3642.1887.tb00027.x. https://doi.org/10.1111/j.1096-3642.1887... )	Nanosesarma batavicum ( Moreira, 1903Moreira C 1903. Nota appendice às contribuições para o conhecimento da fauna brazileira - Crustaceos do Brazil. Archivos do Museu Nacional do Rio de Janeiro, 12: 111-117, pl. 1. https://www.marinespecies.org/aphia.php?p=sourceget&id=377303 https://www.marinespecies.org/aphia.php?... )	Nanosesarma minutum ( De Man, 1887De Man JG 1887. Uebersicht der indo-pacifischen Arten der Gattung Sesarma Say, nebst einer Kritik der von W. Hess und E. Nauck in den Jahren 1865 und 1880 beschriebenen Decapoden. Zoologische Jahrbücher, Abtheilung für Systematik, Geographie und Biologie der Thiere, 2: 639-722. https://biostor.org/reference/4033 https://biostor.org/reference/4033... )	Nanosesarma sarii Naderloo and Türkay, 2009Naderloo R and Türkay M 2009. A new species of the genus Nanosesarma (Crustacea: Decapoda: Brachyura: Sesarmidae), and redescription of Nanosesarma jousseaumei (Nobili, 1906), including new records from the Persian Gulf. Journal of Natural History, 43 (47-48): 2911-2923. DOI: 10.1080/00222930903219996. https://doi.org/10.1080/0022293090321999...	Nanosesarma jousseaumei ( Nobili, 1906Nobili G 1906. Diagnoses préliminaires de 34 espéces et varietés nouvelles, et de 2 genres nouveaux de Décapodes de la Mer Rouge. Bulletin du Muséum d’Histoire Naturelle, Paris, 1 er série, 6 (for 1905) 393-411. )
Carapace	CW/CL = 1.34	CW/CL = 1.35	CW/CL = 1.26	CW/CL= 1.13-1.17	CW/CL = 1.1-1.15
	lateral margins slightly concave, subparallel posteriorly	lateral margins concave posteriorly, gently converging	lateral margins almost straight, gradually diverging posteriorly	lateral margins slightly concave, slightly converging posteriorly	lateral margins almost straight, converging posteriorly
	dorsal surface covered with scattered pits, setal tufts and sparsely placed setae	dorsal surface covered with setal tufts (those on anterior third larger) and sparsely placed setae	dorsal surface covered with scattered pits, sparsely placed setae only on front	dorsal surface covered with setal tufts and sparsely placed short and thin plumose setae	dorsal surface covered with setal tufts and long setae sparsely set among shorter plumose setae
	external orbital tooth broadly triangular, followed by rudimentary tooth	external orbital tooth triangular	external orbital tooth truncate triangular, followed by sharp, triangular epibranchial tooth	external orbital tooth sharply triangular, followed by small, slightly pointed epibranchial tooth	external orbital tooth triangular, followed by small, blunt epibranchial tooth
Third maxilliped	ischium 1.27 times longer than merus	ischium 1.59 times longer than merus	ischium 1.18 times longer than merus	ischium 1.37 times longer than merus	ischium 1.33 times longer than merus
Third maxilliped	merus 1.01 times as wide as long	merus 0.89 times as wide as long	merus 1.01 times as wide as long	merus 1.18 times longer than wide	merus 1.26 times longer than wide
Chelipeds	palm outer surface without setose patch	palm outer surface without setose patch	palm outer surface with densely setose patch extending anteriorly to proximal portion of fingers	palm outer surface with densely setose patch extending anteriorly to mid-length of fingers	palm outer surface with densely setose patch extending anteriorly to proximal portion of fingers
	palm dorsal surface with 2 oblique pectinated crests and 4 or 5 oblique granular ridges	palm dorsal surface with 2 oblique pectinated crests and 5 or 6 oblique granular ridges	palm dorsal surface without oblique pectinated crest; 3 oblique granulated ridges present	palm dorsal surface without oblique pectinated crest or granulated ridges	palm dorsal surface without oblique pectinated crest or granulated ridges
	dorsal surface of male dactylus with row of 13 or 14 small smooth transverse tubercles and proximal granules	dorsal surface of male dactylus with row of 12 prominent transverse ridges, proximal granules and scattered setae	dorsal surface of male dactylus without transverse ridges; proximal granules and scattered setae present	dorsal surface of male dactylus completely tuberculated, densely set small tubercles on proximal part with 6 large granules	dorsal surface of male dactylus without transverse ridges, small proximal granules with a large distinct tubercle on outer surface
	dactylus dorsal surface not granulated	dactylus dorsal surface granulated proximally with scattered setae	dactylus dorsal surface relatively less granulated proximally	dactylus dorsal surface relatively more granulated proximally, completely covered with small tubercles on dorsal surface, 6 prominent granules proximally on the dorsal surface	dactylus dorsal surface relatively less granulated proximally
	cutting edge of dactylus with 3 large and 2 small teeth, and 1 large subdistal tooth	cutting edge of dactylus with 4 subequal blunt teeth	cutting edge of dactylus with large subdistal tooth, followed by 2 small teeth in middle portion and 2 large proximal teeth	cutting edge of dactylus with small teeth	distal half of cutting edge of dactylus with 6 or 7 low tubercles, distalmost larger
	cutting edge of pollex with one large subdistal tooth, followed by 3 small, 1 large median tooth, and 4 small proximal teeth	cutting edge of pollex with 4 subequal blunt teeth	cutting edge of pollex with large subdistal tooth, followed by 2 small teeth, large tooth in middle portion and 3 or 4 small teeth	cutting edge of pollex with several small teeth and a large prominent tooth in middle portion	cutting edge of pollex with large prominent tubercle in middle portion
Pereopods	propodus about twice as long as wide	propodus about twice as long as wide	propodus about twice as long as wide	propodus about twice as long as wide	propodus 1.5 times as long as wide
Pereopods	dactylus slightly curved, with 2 pairs of slender subdistal spines	dactylus smooth, tip corneous, slightly curved, with pair of slender subdistal spines	dactylus smooth, tip corneous, slightly curved, with 4 slender subdistal spines	dactylus with 8-10 spines in 2 rows on posterior margin	dactylus ending in large spine, 6 spines in 2 rows along posterior margin
Male pleon	telson 1.03 times as long as wide	telson 1.04 times as long as wide	telson 1.17 times as long as wide	telson about 1.60 times as long as wide	telson about 0.97 times as long as wide
G1	corneous distal part, flattened, slightly curved, medially notched, flanked by thick bristles	corneous distal part, slender, flattened, slightly bent, flanked by thick bristles	corneous distal part curved, long scoop-shaped, flanked by stiff bristles	corneous distal part curved outwards, with long, stiff setae around it, some setae along lateral margin	long corneous distal part, gently bending outwards, covered with long setae, posterior surface concave

[1] VPP E-mail: vinaypadate@gmail.com

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On Indian species of Nanosesarma Tweedie, 1950 (Decapoda: Brachyura: Sesarmidae)

Abstract