Macrobrachium oenone (De Man 1902)

Macrobrachium oenone (De Man, 1902)

Palaemon (Macrobrachium) oenone De Man, 1902:784, pl. 25: fig. 49 [type locality: northern Halmahera].

Palaemon (Macrobrachium) oenone papuana J. Roux, 1927:324, fig. 2 [type locality: Mamberamo River, northern Irian Jaya].

Macrobrachium oenone.—Holthuis, 1950a:256.

DIAGNOSIS.—Rostrum not overreaching antennal scale, dorsal margin convex or faintly sinuous, rostral formula: 6–7 + 6–9/2–3, dorsal teeth subequally spaced; branchiostegal suture not extending posteriorly beyond hepatic spine; telson with posterior apex not overreaching posterolateral spines; 1st pereopod with chela as long as carpus; 2nd pereopods unequal in length, somewhat dissimilar in form; major 2nd pereopod with palm somewhat compressed, fingers not concealed by dense pubescence, dentate on opposable margins, somewhat gaping, fingers 1–1 times as long as palm, latter without any dense pubescence, chela 2–3 as long as carpus, palm 1–1 times as long as carpus, carpus as long as merus, without longitudinal grooves; minor 2nd pereopod with fingers twice as long as palm; 3rd pereopod overreaching antennal scale by length of dactyl and of propodus; propodus not profusely spinose or scaly; maximum postorbital carapace length less than 20 mm.

RANGE.—Halmahera and New Guinea.