Cirolana siamensis 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 : 414

Cirolana siamensis Rodcharoen, Bruce & Pholpunthin, 2016

Cirolana siamensis RodCharoen, BruCe & Pholpunthin, 2016: 1957 –1964, figs 12–16.

Type and type locality. The holotype is deposited at PSUZC and the type locality is Koh Talu , Prachuap Khiri Khan Province, Thailand, 11°04'45"N, 99°33'23"E ( PSUZC –CR0284-01).

Material examined. Indonesia series. 1 ♂ (6.5 mm), Waiwo, Raja Ampat, 00°26'24.6''S, 130°47'01.1''E, 7 August 2015, trap 10 m , coll. M. Mofu and E. Umpain ( MZB Cru.Iso 066). Singapore series. 23 ♀ (20 measured, 4.2–8.5 mm, average 6.4 mm), Pulau Tekukor, 01°13.879'N, 103°50.318'E, 12 March 2014, trap 1.6 m on rocky sandy shore , coll. Helen Wong and party, OTR320 OTC0081 ( ZRC 2017.0757 ). 5 ♀ (unmeasured), same data as previous (MTQ W52895)

Remarks. The species characteristics have been thoroughly discussed in the original description (Rodcharoen et al. 2016). Cirolana siamensis is most similar to C. thailandica , here also recorded from Indonesia and Singapore, but can be distinguished by the laterally curved appendix masculina (vs straight) and deeply and equally bifid uropod rami (vs laterally prominent).

Distribution. Previously recorded from Thailand (Rodcharoen et al. 2016), here from Singapore and West Papua, Indonesia ( Fig 1 ).

Figures

FIGURE 1. Distribution map of Cirolana ‘ parva group’ in Indo-Australian region (C – H, Indonesia; I, PNG; J – K, Australia). LoCation symbols: A = Thailand, B = Singapore, C = Lombok, D = Bitung, E = Pulau Pombo, Maluku, F = Raja Ampat, G = Kei Islands, H = Kaimana, I = Madang, J = Lizard Island, K = HinChinbrook Island. SpeCies symbols: Cirolana andamanensis (-), Cirolana arafurae (×), Cirolana improceros (v), Cirolana leptanga (O), Cirolana siamensis (O), Cirolana stenoura (A), Cirolana thailandica (Ł), Cirolana molari (Ɨ), Cirolana peisanae (+), Cirolana duo (Ŧ).