Caridina tupaia de Mazancourt, Marquet & Keith, 2019 Figs 2S, 16 Material examined SOLOMON ISLANDS – Choiseul Island • 1 ♂, cl 3.2 mm; Creek 2; 06°59.085´S, 156°47.454´E; 93 m a.s.l.; 14 Oct. 2014; P. Gerbeaux, P. Keith and G. Marquet leg.; MNHN-IU- 2018-2877 • 1 ♂, cl 3.4 mm; same collection data as for preceding; MNHN-IU- 2018-2878 • 1 ♂, cl 3.6 mm; same collection data as for preceding; MNHN-IU- 2018-2879 • 1 ♂, cl 3.6 mm; same collection data as for preceding; MNHN-IU- 2018-2880 • 1 ♂, cl 3.9 mm; same collection data as for preceding; MNHN- IU- 2018-2881 • 1 ♀, cl 3.5 mm; same collection data as for preceding; DNA voucher: CA1927; MNHN- IU- 2018-2882 • 1 ♀ ovig., cl 4.5 mm; same collection data as for preceding; MNHN-IU- 2018-2884 • 1 ♀ ovig., cl 5.2 mm; Creek 1; 06°59.085´S, 156°47.454´E; 132 m a.s.l.; 14 Oct. 2014; P. Gerbeaux, P. Keith and G. Marquet leg.; MNHN-IU- 2018-2885. – Malaita Island • 1 ♂, cl 3.6 mm; Tanana River; 09°17.383´S, 167°07.012´E; 276 m a.s.l.; 16 Jun. 2015; D. Boseto leg.; DNA voucher: CA1508; MNHN-IU- 2018-2886 • 1 ♂, cl 3.1 mm; small tributary close to Nunubala Camp; 09°00.056´S, 160°51.893´E; 23 Jun. 2015; 315 m a.s.l.; D. Boseto leg.; MNHN-IU- 2018-2887. Description See de Mazancourt et al. (2019b). Habitat This species is largely rheophile and prefers fresh and well-oxygenated waters from the lower course to the higher course of rivers. Colour pattern The live general colour of the body is yellowish and slightly translucent. Numerous red spots are visible all over the body. Sometimes, a lighter longitudinal dorsal band is present stretching from the rostrum to the telson (see de Mazancourt et al. 2019b). Distribution This species seems to have a wide distribution: Solomon Islands (Malaita and Choiseul), Fiji, Samoa, Cook (Rarotonga) and French Polynesia (Society and Austral archipelagos). Remarks Recently de Mazancourt et al. (2019b) have revised the species of the C. weberi group from Polynesia. Contrary to what Edmondson (1935) wrote, C. weberi does not occur in Polynesia but four other species of the C. weberi complex. Among these species, one also occurs in the Solomon Islands: C. tupaia. Curiously, although the dorsal teeth of the rostrum are situated all along its length, with sometimes 1–3 of them situated on the carapace behind the orbital margin in French Polynesia, in Samoa (Upolu) and the Cook Islands, specimens from the Solomon Islands have dorsal teeth situated considerably anterior to the orbital margin with none of them situated on the carapace behind the orbital margin (see Fig. 16).

{"references": ["de Mazancourt V., Marquet G., & Keith P. 2019 b. Revision of freshwater shrimps belonging to Caridina weberi complex (Crustacea: Decapoda: Atyidae) from Polynesia with discussion on their biogeography. Journal of Natural History 53 (13 - 14): 815 - 847. https: // doi. org / 10.1080 / 00222933.2019.1612959", "Edmondson C. H. 1935. Atyidae of Southern Polynesia. Occasional Papers of Bernice P. Bishop Museum 11 (3): 1 - 19."]}

Published as part of Mazancourt, Valentin de, Boseto, David, Marquet, Gerard & Keith, Philippe, 2020, Solomon's Gold Mine: Description or redescription of 24 species of Caridina (Crustacea: Decapoda: Atyidae) freshwater shrimps from the Solomon Islands, including 11 new species, pp. 1-86 in European Journal of Taxonomy 696 on pages 52-53, DOI: 10.5852/ejt.2020.696, http://zenodo.org/record/3973435