Caridina rubella Fujino & Shokita, 1975

Mazancourt, Valentin de, Marquet, Gérard & Keith, Philippe, 2024, An Integrative Taxonomic Revision of the Freshwater Atyid Shrimps (Crustacea: Decapoda: Caridea) of Micronesia, Diversity 16 (200), pp. 1-31 : 21-22

publication ID	https://doi.org/10.3390/d16040200
persistent identifier	https://treatment.plazi.org/id/D477D357-D23B-A52B-7E93-C220FCEB063F
treatment provided by	Carolina (2025-03-26 18:54:20, last updated 2025-03-26 18:54:23)
scientific name	Caridina rubella Fujino & Shokita, 1975
status

Treatment

Caridina rubella Fujino & Shokita, 1975 View in CoL

Figure 3F.

- Caridina rubella Fujino and Shokita, 1975: 102 , Figure 6 [type locality: Izaga Cave, Miyako Island, Ryukyu, Japan].—Shokita and Nishijima, 1976 [52]: 71.—Shokita, 1979 [53]: 203; 2003 [54]: 250, Figures 18F and 19I; 2006 [55]: 61.—Maciolek, 1983 [25]: 607.—Cai and Anker, 2004 [56]: 243, Figures 6 and 7.—Fujita and Shokita, 2005 [57]: 203.—Cai and Shokita, 2006 [51]: 2145, Figures 6F–J, 7 and 8.—Fujita, 2007 [58]: 92; 2018: 16.—Cai and Ng, 2009 [59]: 1094.—Weese et al., 2012 [60]: 109.—De Grave et al., 2022 [61]: 711, Figures 1 and 2.

- Caridina sp. 1 —Marquet et al., 2003 [62]: 74.

Material examined

GUAM. ZMB 34612 : 1 ♀, Fai Fai Cave , 13 ◦ 31.700 ′ N, 144 ◦ 48.233 ′ E, coll. D.C. Rogers GoogleMaps .

Distribution

This species has a wide distribution in anchialine habitats in the Pacific: Japan (Ryukyu), Philippines (Bohol, Palawan, Panglao), Indonesia (Sulawesi), New Caledonia (Loyalty), Cook Islands, French Polynesia (Tahiti), Niue, Tonga (Tongatapu), Western Samoa (Upolu), Solomon Islands (Nggela Pile), and Guam.

Remarks

The single female specimen collected from Fai Fai Cave in Guam agrees well with the published descriptions of the species [51,61,63], having a rostral formula of 10 + 28/12 and a rostrum 1.19 times as long as the carapace. Interestingly, our sequence clusters with a 16S sequence of the short-rostrum morph of the species from Miyako Island which is thought to represent the “real” C. rubella , whereas the long-rostrum morph from the same area potentially represents an undescribed species [60]. Consequently, it appears that this species is morphologically variable, as recently illustrated by De Grave et al. [61], but probably hides cryptic species. Amolecular study of this species from its whole range would be needed to clarify its status.