Journal
<p class="rtejustify"><em>Caridina weberi</em>, an emblematic species of the ‘<em>C. weberi </em>complex’, was described by De Man in 1892 from different localities in Indonesia. Until now, this species was thought to have a wide distribution in Polynesia. Numerous specimens identified as <em>C. weberi</em> were collected recently from various Polynesian islands. In the context of integrative taxonomy, they were morphologically and genetically studied. Three new species allied to <em>C. weberi</em> are here described: <em>C. marquesensis</em> n. sp., <em>C. futunensis</em> n. sp. and <em>C. tupaia</em> n. sp. The occurrence of <em>C. rapaensis</em>, another species part of the ‘<em>C. weberi’</em> complex is confirmed. Descriptions or redescription of these species are given as well as their geographical and ecological distributions. The position of these species in the complex is clarified. A key is provided to facilitate identification.</p>
