Macrobrachium trompii (De Man 1898)

Macrobrachium trompii (De Man, 1898)

Palaemon (Parapalaemon) Trompii De Man, 1898:144, pl. 7 [type locality: “Kapuas Basin,” central Borneo].

Palaemon (Parapalaemon) thienemanni J. Roux, 1932:570, figs. a,b [type locality: Sungai Musi, near Muarakelingi, southern Sumatra].

Palaemon (Parapalaemon) trompi armatus J. Roux, 1936:30 [type locality: Gunong Pulai Estate, Johor. Malaysia].

Macrobrachium trompii.—Holthuis, 1950a:211.

DIAGNOSIS.—Rostrum reaching as far as or slightly beyond level of distal end of antennal scale, dorsal margin nearly straight, rostral formula: 3–4 + 7–8/4–6, dorsal teeth subequally spaced; branchiostegal suture not extending posteriorly beyond hepatic spine; telson with posterior apex not overreaching posterolateral spines; 1st pereopod with chela less than as long as carpus; 2nd pereopods nearly subequal in length and slightly dissimilar in form, palm somewhat compressed, fingers densely pubescent, dentate on opposable margins, not gaping, slightly shorter than palm, palm pubescent distally, chela 1–1 times as long as carpus, palm to quite as long as carpus, carpus slightly longer than merus, without longitudinal grooves; 3rd pereopod overreaching antennal scale by length of dactyl, propodus not profusely spinose or scaly; maximum postorbital carapace length about 16 mm.

RANGE.—Malaya, Sumatra, and Borneo.