Labuanium politum (De Man, 1887)

Naruse, Tohru & Ng, Peter K. L., 2020, Revision of the sesarmid crab genera Labuanium Serène and Soh, 1970, Scandarma Schubart, Liu and Cuesta, 2003 and Namlacium Serène and Soh, 1970 (Crustacea: Decapoda: Brachyura: Sesarmidae), with descriptions of four new genera and two new species, Journal of Natural History (J. Nat. Hist.) 54 (7 - 8), pp. 445-532 : 452-455

publication ID

https://doi.org/ 10.1080/00222933.2020.1763491

publication LSID

lsid:zoobank.org:pub:414B8DAA-584F-4070-A355-83B583D0D017

DOI

https://doi.org/10.5281/zenodo.6518793

persistent identifier

https://treatment.plazi.org/id/B15D87DE-FFE2-BE69-6E8F-FD4A0CCC9AD8

treatment provided by

Carolina

scientific name

Labuanium politum (De Man, 1887)
status

 

Labuanium politum (De Man, 1887) View in CoL

( Figures 1–4 View Figure 1 View Figure 2 View Figure 3 View Figure 4 )

Sesarma polita De Man, 1887, p. 654 View in CoL [type locality: Sullivan Island, Mergui Archipelago]; 1887–1888 (1888), p. 189, pl. 13, figs 7–9; Tweedie 1940, p. 93; 1950, p. 346, figs 2c, 3a–d.

Sesarma politum: Alcock 1900, p. 422 .

Sesarma (Sesarma) polita: Tesch 1917, p. 190 View in CoL .

Labuanium politum: Serène and Soh 1970, p. 401 View in CoL ; Serène and Moosa 1971, p. 15; Serène et al. 1974, p. 26; Yang 1979, p. 48; Tan and Ng 1994, p. 82; Wee and Ng 1994, p. 82; Cuesta et al. 2006, p. 157, figs 6A–E; Ng et al. 2008a, p. 221, fig. 166, 2008b, p. 74; Rahayu and Setyadi 2009, p. 66; Ng et al. 2015a, p. 2.

Labuanium polita: Fransen et al. 1997, p. 124 View in CoL .

Material examined

Lectotype. NHM 1886.52, 1 male, 18.7 × 17.1 mm, Sullivan Island , Mergui Archipelago, coll. J. Anderson, designated herein.

Paralectotypes. MNHN-IU-2017-8026 (ex. MNHN-B16748 ), 1 female, 25.8 × 23.6 mm, Mergui Archipelago; RMNH D 18 About RMNH , 1 male, Sullivan Island , Mergui Archipelago, Andaman Sea, Myanmar, coll. J. Anderson, 25 November 1881 – 13 April 1882.

Others. SMF 10004, 1 female, 34.5 × 31.0 mm, General MacArthur , East Samar, Philippines, 11.25°N, 125.5417°E, coll. W. Lobin, August 1978; GoogleMaps ZRC 2003.0381, 6 males, 32.0 × 28.2–40.4 × 36.3 mm, 3 females, 32.0 × 28.6 − 38.2 × 34.3 mm, Laboc River , Bohol, Philippines, coll. P.K.L. Ng et al., 28–29 July 2003; GoogleMaps RUMF-ZC-5411, 1 male, 37.0 × 33.0 mm, GoogleMaps 1 female, 35.4 × 31.3 mm, same data as ZRC 2003.0381; GoogleMaps ZRC 2013.0382 View Materials , 2 males, 32.8 × 29.4, 39.8 × 33.9, PANGLAO 2004, stn. M51, Mayacabac, Panglao Island , Philippines, 9.613333°N, 123.87°E, coll. PANGLAO 2004, 30 June 2004; GoogleMaps ZRC 2013.0383 View Materials , 2 males, 34.2 × 30.0, 26.7 × 24.2 mm, PANGLAO 2004, stn. M57, Sungcolan inlet, Panglao Island , Philippines, 9.633333°N, 123.8317°E, coll. PANGLAO 2004, 4 July 2004; GoogleMaps ZRC 2018.0050 View Materials , 2 males, 26.8 × 23.9, 30.5 × 27.3 mm, Baranggay Racat , Municipality of Sta. Ana, Cagayan Province, Philippines, 18.40048°N, 122.1263°E, coll. J.C.E. Mendoza and T. Naruse, 23 April 2007; GoogleMaps ZRC 1965.7 View Materials .29.58, 1 male, 40.8 × 36.2 mm, Labuan, Borneo , Malaysia, coll. G. Nunong, 1938; GoogleMaps RUMF-ZC-2358, 2 males, 30.2 × 26.4, 32.1 × 28.8 mm, 2 females, 26.0 × 23.9, 30.9 × 28.0 mm, Pulau Ubin , Singapore, 1.410617°N, 103.9788°E, after Chek Jawa, nipah palm with stream, coll. P.K.L. Ng et al., 18 October 2012 GoogleMaps .

Colouration

In life, carapace dorsal surface dark brown to khaki, gastric to intestinal regions with one wide and longitudinal dark line. Chelipeds and ambulatory legs dark red to dark brown ( Ng et al. 2015a, figs 2–4).

Distribution

Indo-West Pacific: India ( Alcock 1900); Mergui Archipelago [type locality: Sullivan Island] and western part of Indian Archilpelago (De Man 1887, 1887–1888 (1888)); Peninsular Malaysia ( Tan and Ng 1994); Labuan,Borneo ( Tweedie 1950); central and northern Philippines ( Cuesta et al. 2006; Ng et al. 2008a; present study); Singapore ( Ng et al. 2015a); Ambon; Timika, Indonesian Papua ( Serène and Moosa 1971; Rahayu and Setyadi 2009).

Remarks

When De Man (1887) described Sesarma polita , he examined four males and two females, although no holotype was designated. Of these six specimens (all syntypes), we were able to examine one male ( NHM 1886.52 ), one female ( MNHN-B16748 ) and one male (RMNH D 18 About RMNH ). The whereabouts of the remaining three specimens are not known. A male specimen ( NHM 1886.52 ) from Sullivan Island , Mergui Archipelago, is here designated as the lectotype. This is necessary for stability as Sesarma polita is the type species of the genus and the present revision restricts the genus to the type species.

Ecological note

Labuanium politum is known to be associated with the nipah palm ( Nypa fruticans ) ( Ng et al. 2015a). Ng et al. (2015a) also noted that the species has been occasionally found among mangrove tree roots with no nipah palm patches around the area ( Rahayu and Setyadi 2009), although the specimens concerned may be vagrants.

RMNH

National Museum of Natural History, Naturalis

SMF

Forschungsinstitut und Natur-Museum Senckenberg

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Sesarmidae

Genus

Labuanium

Loc

Labuanium politum (De Man, 1887)

Naruse, Tohru & Ng, Peter K. L. 2020
2020
Loc

Labuanium polita:

Fransen CHJM & Holthuis LB & Adema JPHM 1997: 124
1997
Loc

Labuanium politum: Serène and Soh 1970 , p. 401

Ng PKL & Lee BY & Tan HH 2015: 2
Rahayu DL & Setyadi G 2009: 66
Ng PKL & Guinot D & Davie PJF 2008: 221
Cuesta JA & Guerao G & Liu HC & Schubart CD 2006: 157
Tan CGS & Ng PKL 1994: 82
Wee YC & Ng PKL 1994: 82
Yang CM 1979: 48
Serene R & Romimohtarto K & Moosa MK 1974: 26
Serene R & Moosa MK 1971: 15
Serene R & Soh CL 1970: 401
1970
Loc

Sesarma (Sesarma) polita: Tesch 1917 , p. 190

Tesch JJ 1917: 190
1917
Loc

Sesarma politum:

Alcock A 1900: 422
1900
Loc

Sesarma polita

De Man 1887: 654
1887
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