Macrobrachium ngankeeae, a new species of freshwater shrimp (Crustacea: Decapoda: Palaemonidae) from Papua Barat Province, Indonesia Author Mazancourt, Valentin De UMR 8067 Biologie des organismes et écosystèmes aquatiques (BOREA), Muséum national d’Histoire naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, CNRS, IRD, CP 26, 57 rue Cuvier, 75005, Paris, France. & Museum fu ̈ r Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstrasse 43, 10115, Berlin, Germany Author Marquet, Gerard 96 rue de Richelieu, 75002, Paris, France. Author Wowor, Daisy Museum Zoologicum Bogoriense, Research Center for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Jalan Raya Jakarta-Bogor Km 46, Cibinong 16911, Indonesia. Author Keith, Philippe UMR 8067 Biologie des organismes et écosystèmes aquatiques (BOREA), Muséum national d’Histoire naturelle, Sorbonne Université, Université de Caen Normandie, Université des Antilles, CNRS, IRD, CP 26, 57 rue Cuvier, 75005, Paris, France. text Zootaxa 2024 2024-07-04 5476 1 253 266 http://dx.doi.org/10.11646/zootaxa.5476.1.22 journal article 299702 10.11646/zootaxa.5476.1.22 932face2-ca32-43f5-b3da-9fb6017ffce8 1175-5326 12727070 C516B01A-3ED7-49BC-B695-0E8AC554D52D Macrobrachium lepidactyloides ( de Man, 1892 ) Palaemon (Macrobrachium) lepidactyloides de Man, 1892: 497 , pl. 29, fig. 51 Palaemon lepidactylus .— Cowles, 1914: 389 , pl. 3, fig. 9 [not P . lepidactylus Hilgendorf, 1879 .] Macrobrachium hirtimanus . — Holthuis, 1950: 245 [part], fig. 51a. Macrobrachium lepidactyloides . — Holthuis, 1952: 210 , pl. 15, fig.2; Chace & Bruce, 1993: 32 , fig. 12; Ito et al . 2006: 23 ; Chen et al . 2009: 234 , tab. 2; Eguia et al . 2009: 31 ; Keith et al . 2013: 108 ; Saeki et al . 2018: 35 , fig. 2–4, 5A–D, 6. Type material. Syntype : 1 male (cl 14.7 mm ), ZMA De 102.574, Nusa Tenggara Timur Province , Flores Island , Ngada Regency, Mbawa (present: Maumbawa), above waterfall, coll. M. Weber , 1888–1889. Other material examined . INDONESIA : 1 male (cl 17.4 mm ; MNHN-IU-2016-11941) , 1 male (cl 8.4 mm ; MZB Cru 5353), Papua Barat Province , Kaimana Regency , Kaimana District , Ds. Jarati , Sg. Kumbawa , 04°09.943’S 133°09.292’E , 77 m asl , coll. P. Keith , P. Gaucher , G. Ségura , 15 October 2010 . PAPUA NEW GUINEA : New Britain : 1 male (cl 16.7 mm ), MNHN-IU-2017-9317, Huvenganga R ., 05°45.187’S 150°35.001’E , coll. R . Causse, P . Keith, C . Lord , 19 October 2018 ; 1 male (cl 19.0 mm; MNHN-IU-2016-11944), 3 ovigerous females (cl 14.4–17.3 mm ; MNHN-IU-2017-9457), Korori R ., 05°42.650’S 150°37.693’E , coll. P. Keith , C. Lord , R . Causse , 22 October 2018 ; 1 male (cl 14.4 mm ; MNHN-IU-2016-11937), 1 female (cl 9.4 mm ; MNHN-IU-2017-932), Wogan R ., 5°45.187’S 150°35.001’E , coll. P. Keith , C. Lord , R . Causse , 21 October 2018 ; 1 female (cl 15.7 mm ; MNHN-IU-2016- 11935), Vaavu R ., 05°22.584’S 150°03.724’E , coll. P. Keith , C. Lord , R . Causse , 30 October 2018 . SOLOMON ISLANDS : Kolombangara : 1 female (cl 12.4 mm ; MNHN-IU-2019-341), 1 male (cl 14.3 mm ; MNHN-IU-2017- 9438), Lodumoe R ., 07°50.961’S 157°04.320’E , coll. P. Gerbeaux , P. Keith , G. Marquet , 15 November 2015 ; 1 ovigerous female (cl 11.7 mm ; MNHN-IU-2016-11946), Poitete R ., 07°52.413’S 157°07.982’E , coll. P. Keith , C. Lord , G. Marquet , 15 November 2015 . Ranongga : 1 ovigerous female (cl 11.7 mm ; MNHN-IU-2017-9441), Mondo R ., 08°02.164’S 156°32.163’E , coll. P. Keith , C. Lord , 26 October 2016 ; 1 female (cl 16.7 mm ; MNHN-IU-2017- 9317), Kélé Kélé R ., 08°02.397’S 156°32.464’E , coll. P. Keith , C. Lord , 27 October 2016 . Diagnosis. Medium-sized species with subcylindrical body form. Rostrum short, tip reach mid to slightly extend beyond end of second article of antennular peduncle; slender; dorsal carina convex, with total 11–13 teeth, 5 or 6 teeth completely postorbital; ventral carina convex, with 2 teeth. Carapace glabrous. Ocular beak moderately developed. Third maxilliped with exopod shorter than ischiomerus. Second pereiopods robust, dissimilar in shape, unequal in size; distal part of dactylus and pollex of major second pereiopod with double row of tubercles each, fingers about as long as palm, carpus conical, carpus shorter than chela, carpus about as long as merus; cutting edges of minor second pereiopod gaping, densely covered with long stiff setae consealing surface; all articles covered with modified squamiform and mamilliform setae. Third, fourth and fifth pereiopods with modified squamiform setae and few scattered short stiff setae. T4 with median process. Pre-anal carina well developed. Uropods glabrous, exopod with mobile mesial spine longer than distolateral tooth. Developed eggs small, maximum size 0.6 × 0.5 mm , ovoid, numerous. Distribution. Wide-ranging in the Indo-West Pacific from eastern Indonesia , the Philippines , Taiwan and subtropical Japan to Fiji and French Polynesia .