Leptocarpus potamiscus (Kemp 1917)

Leptocarpus potamiscus (Kemp, 1917)

Leander potamiscus Kemp, 1917:225, fig. 7 [type locality: Pattini River, below Pattini, Peninsular Thailand; fresh water under tidal influence].

Leptocarpus potamiscus.—Holthuis, 1950a:97.

DIAGNOSIS.—Rostrum overreaching antennal scale by more than rostral length, armed ventrally with 6–10 teeth; 2nd pereopod with fingers obscurely excavate longitudinally, little more than as long as palm; 5th pereopod overreaching antennal scale by length of dactyl and at least of propodus; maximum carapace length about 10 mm.

RANGE.—India, Andaman Islands, Thailand, Malaya, Sumatra, and Java; fresh and brackish water.

*Macrobrachium Bate, 1868

Macrobrachium Bate, 1868a:363 [type species, selected by Fowler, 1912:558: Macrobrachium americanum Bate, 1868a:363; gender; neuter].

Eupalaemon Ortmann, 1891:696, 697 [type species, selected by Holthuis, 1955:53: Palaemon acanthurus Wiegmann, 1836:150; gender: masculine].

Parapalaemon Ortmann, 1891:696, 731 [type species, selected by Holthuis, 1955:53: Palaemon dolichodactylus Hilgendorf, 1879:840 (= Palaemon scabriculum Heller, 1862a:527); gender: masculine].

Macroterocheir Stebbing, 1908:39 [type species, by monotypy; Palaemon lepidactylus Hilgendorf, 1879:838; gender: masculine].

DIAGNOSIS.—Rostrum rarely with elevated basal crest; carapace without branchiostegal spine, with hepatic spine, and branchiostegal suture; 4th thoracic sternite with median process; mandible with palp; 3 posterior pairs of pereopods with dactyl simple, shorter than propodus; endopod of male 1st pleopod without appendix interna.

RANGE.—Pantropical and subtropical, occasionally temperate, commonly fresh, sometimes brackish water, some species marine as juveniles.