Taxonomy of Shellfish

Unit 7 - Non-penaeid prawns

7.1.2. Macrobrachium malcolmsonii

• Branchiostegal spine absent
• Anterior margin of carapace below antennal spine unarmed
• Hepatic spine present
• Dactylus of last 3 pairs of pereopods simple
• Carpus of second pereopods distinctly longer than merus
• Rostram with a distinct elevated basal crest.
• Ventral margin of the rostrum with4 to 7 teeth
• Telson gradually tapering to a sharp point, without posterior margin. tip of telson over reaching postero-lateral spines
• In adult male, carapace with spinules anteriorly, second pair of pereopods with a very short pubescence which is especially distinct on the movable finger.
• Carapus shorter than propodus