Caridina variabilirostris (Crustacea: Decapoda: Atyidae), a new species of freshwater shrimp from Pohnpei (Micronesia) Author Mazancourt, Valentin de Muséum national d’Histoire naturelle, Département Adaptations du Vivant, UMR 7208, CP 026, 57, rue Cuvier, 75231 Paris, Cedex 05, France. valentin.demazancourt@laposte.net Author Marquet, Gerard Muséum national d’Histoire naturelle, Département Adaptations du Vivant, UMR 7208, CP 026, 57, rue Cuvier, 75231 Paris, Cedex 05, France. gmarquet@neuf.fr Author Keith, Philippe Muséum national d’Histoire naturelle, Département Adaptations du Vivant, UMR 7208, CP 026, 57, rue Cuvier, 75231 Paris, Cedex 05, France. keith@mnhn.fr text European Journal of Taxonomy 2018 2018-08-03 453 1 16 journal article 22299 10.5852/ejt.2018.453 509ff7cf-3199-412b-8d01-198cb6371322 3817284 445C8252-5FA2-49AA-AB89-E1C2DDEBEE7F Caridina variabilirostris sp. nov. urn:lsid:zoobank.org:act: 63F36D6C-9049-4D5E-902E-D38A3BCA3B0A Figs 3–4 Etymology The new species is named variabilirostris for its variable rostrum length. Material examined Holotype POHNPEI ( Station 8): ♂ , cl 3.5 mm , Nanpil river , 06°54.252′ N , 158°11.491′ E , 180 m a.s.l. , 13 Mar. 2012 (MNHN-IU-2018-231, DNA : CA 1397). Paratypes POHNPEI – Nanpil river ( Station 1) : 1 ♂ , cl 3.2 mm , 06°55.242′ N , 158°12.265′ E , 127 m a.s.l., 9 Mar. 2012 , (MNHN-IU-2018-232); 1 ♀ , cl 4.6 mm , same data as for preceding (MNHN-IU-2018-233); 1 ♀ ovig., cl 4.1 mm , same data as for preceding (MNHN-IU-2018-234, DNA : CA 1396). – Nanpil river ( Station 3) : 1 ♂ , cl 3.4 mm 06°55.111′ N , 158°12.878′ E , 52 m a.s.l., 9 Mar. 2012 ( MNHN- IU-2018-235); 1 ♀ ovig., cl 4.5 mm , same data as for preceding (MNHN-IU-2018-236). – Lehn Mesi river ( Station 5) : 2 ♀♀ , cl 4.7 mm (MNHN-IU-2018-237) and 4.8 mm (MNHN-IU-2018-238); 1 ♀ ovig., cl 4.7 mm (MNHN-IU-2018-239), 06°51.107′ N , 158°11.896′ E , 139 m a.s.l., 10 Mar. 2012 . – Senipehn river ( Station 7) : 1 ♀ , 06°51.906′ N , 158°16.010′ E , 95 m a.s.l., 12 Mar. 2012 , cl 4.4 mm (MNHN-IU-2018-240); 2 ♀♀ , ovig., cl. 4.1 mm (MNHN-IU-2018-241) and 4.5 mm ( MNHN- IU-2018-242), same data as for preceding. – Nanpil river ( Station 8) : 3 ♂♂ , cl 3.4 mm ( MNHN- IU-2018-243, DNA : CA 1399), 3.5 mm (MNHN-IU-2018-244) and 3.6 mm (MNHN-IU-2018-245, DNA : CA 1398), 06°54.252′ N , 158°11.491′ E , 180 m a.s.l., 13 Mar. 2012 ; 1 ♀ , cl 4.4 mm ( MNHN- IU-2018-246), same data as for preceding; 1 ♀ ovig., cl 5.1 mm (MNHN-IU-2018-247), same data as for preceding. – Nanpil estuary ( Station 9) : 2 ♂♂ , cl 2.2 mm (MNHN-IU-2018-248, DNA : CA 1401) and 2.7 mm (MNHN-IU-2018-249), 06°56.609′ N , 158°13.550′ E , 5 m a.s.l., 13 Mar. 2012 ; 2 ♀♀ , 3.5 mm (MNHN-IU-2018-250, DNA : CA 1400) and 3.7 mm (MNHN-IU-2018-251), same data as for preceding; 2 ♀♀ ovig., cl 4.0 mm (MNHN-IU-2018-252) and 4.4 mm (MNHN-IU-2018-253), same data as for preceding. – Mahnd river ( Station 10) : 2 ♂♂ , cl 2.9 mm (MNHN-IU-2018-254) and 3.3 mm (MNHN-IU-2018-255), 06°50.221′ N , 158°17.212′ E , 107 m a.s.l., 14 Mar. 2012 ; 1 ♀ ovig., cl. 4.3 mm (MNHN-IU-2018-256), same data as for preceding.