Cirolana andamanensis Rodcharoen, Bruce & Pholpunthin, 2016

Bruce, Niel L., 2017, Review of the species of the Cirolana ‘ parva - group’ (Cirolanidae: Isopoda: Crustacea) in Indonesian and Singaporean waters, Zootaxa 4317 (3), pp. 401-435 : 404

publication ID

https://doi.org/ 10.11646/zootaxa.4317.3.1

publication LSID

lsid:zoobank.org:pub:27Fe8453-A7Cb-4B53-A024-A5C875A8De69

DOI

https://doi.org/10.5281/zenodo.3511956

persistent identifier

https://treatment.plazi.org/id/7A17879C-FF93-FFF6-FF14-FF34FC81FA9B

treatment provided by

Plazi

scientific name

Cirolana andamanensis Rodcharoen, Bruce & Pholpunthin, 2016
status

 

Cirolana andamanensis Rodcharoen, Bruce & Pholpunthin, 2016 View in CoL

Cirolana andamanensis RodCharoen, BruCe & Pholpunthin, 2016: 1940 View in CoL View Cited Treatment –1949, figs 2–6.

Type and type locality. The holotype is deposited at PSUZC; type locality is Nai Yang Beach , Phuket Province, Thailand, 08°05'07"N, 98°17'06"E ( PSUZC –CR0282-01). GoogleMaps

Material examined. Indonesia series. 8 ♂ (3.7, 4.4, 4.4, 4.6 [dissected], 5.0, 5.1, 5.2, 6.2 mm), 4 ♀ (3.0, 3.0, 5.0, 5.0 mm), 1 manca (2.2 mm), Teluk Medana, Lombok, 8°21'34.00''S, 116°07'25.59''E, 14 August 2014, diving 6 m, rubble and dead coral head, coll. C.M. Sidabalok and party ( MZB Cru.Iso 047) GoogleMaps . 3 ♂ (4.5, 4.5, 4.5 mm), 3 ♀ (3.9, 4.0, 4.4 mm), Teluk Medana, Lombok, 8°21'34.00''S, 116°07'25.59''E, 14 August 2014, diving 6 m, rubble and dead coral head, coll. C.M. Sidabalok and party (MTQ W52891). 3 ♂ (4.0, 4.4, 5.0 mm), 1 ♀ (4.5 mm), Gili Trawangan, Lombok, 8°21'3.629''S, 116°01'37.74''E, 9 August 2014, diving 8 m, rubble and dead coral head, coll. C.M. Sidabalok and party (MZB Cru.Iso 048). 2 ♂ (5.0, 5.7 mm), 1 ♀ (4.9 mm, ovigerous), Gili Air, Lombok, 8°21'27.238''S, 116°05'17.206''E, 13 August 2014, diving 10 m, rubble and dead coral head, coll. C.M. Sidabalok and party (MZB Cru.Iso 049). 3 ♂ (5.5, 6.8, 6.9 mm), Teluk Kodek, Lombok, 8°24'13.44''S, 116°04'19.02''E, 11 August 2014, hand collection on intertidal reef, coll. C.M. Sidabalok and party (MZB Cru.Iso 050).

Singapore series. 1 ♂ (8.0 mm), Sisters Island , 01°12.789'N, 103°50.187'E, 26 May 2015, intertidal reef, rocky reef, coll. Lee Yen Ling and party, IT81 SS1931 ( ZRC 2017.0756 View Materials ). GoogleMaps

Variation. Cirolana andamanensis specimens from Lombok are smaller in size than the specimens from Thailand and Singapore (male average size 5.4 vs 6.6 mm).

Remarks. The distinguishing characters of Cirolana andamanensis are the fused articles 1 and 2 of the antennula peduncle, absence of a setal fringe on male pereopod 1, low tubercular penes separated by 3% of the sternal width, and the weakly concave lateral margin of pleopod 1 (Rodcharoen et al. 2016).

Within the Indo-Malaya region Cirolana andamanensis is most similar to C. improceros Bruce, 1986 having in common close-spaced penial openings and concave lateral margin of the endopod of pleopod 1. Cirolana improceros differs in having a slightly longer (1.5 vs 1.4) and distally recurved (vs straight) appendix masculina.

The specimens of Cirolana andamanensis from Lombok are consistently smaller than those from the Andaman Sea coast of Thailand, by about 18–22%, averaging 5.4 mm in Lombok vs 6.6 mm in Thailand. This suggests that the two populations may be distinct, but we were not able to identify any morphological differences and were unable to obtain molecular data to further assess the genetic differences.

Distribution. Extended from the previous record in the Andaman Sea, Thailand (Rodcharoen et al. 2016) to the new records in Singapore and Indonesia (Lombok) ( Fig. 1 View FIGURE 1 ).

PSUZC

Princess Maha Chakri Sirindhorn Natural History Museum (PSU Museum, Prince of Songkla University, Thailand)

MZB

Museum Zoologicum Bogoriense

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Cirolanidae

Genus

Cirolana

Loc

Cirolana andamanensis Rodcharoen, Bruce & Pholpunthin, 2016

Bruce, Niel L. 2017
2017
Loc

Cirolana andamanensis RodCharoen, BruCe & Pholpunthin, 2016 : 1940

RodCharoen 2016: 1940
2016
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