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

TABLE 1. Morphological comparison of the species of the M. placidulum species-group.

		M. ngankeeae sp. nov.	M. lepidactyloides	M. feunteuni	M. placidulum	M. placidum
Rostrum	Post-orbital teeth	3–4	5–7	5–7	4–6	5–7
	Position of first tooth relative to total cephalothorax length	0.23–0.27	0.47–0.55	0.24–0.30	0.29–0.50	0.41–0.50
P2 major	Relative length of dactylus and palm	0.63–0.72	1.27–1.33	0.66–1.03	0.55–0.72	0.82–1.02
	Relative length of chela and carpus	2.38–3.18	2.37–2.53	1.57–2.33	1.64–2.01	1.82–2.18
P2 minor	Relative length of dactylus and palm	0.97–1.49	1.75–2.12	0.85–1.55	1.0–1.29	0.85–1.1
Ocular beak		Prominent	Moderately developed	Moderately developed	Absent or poorly developed	Moderately developed
Fourth thoracic sternite		Presence of projection	No projection	No projection	No projection	No projection