Macrobrachium australe (Guérin-Méneville, 1838)
Palaemon australis Guérin-Méneville, 1838: 37 .
Macrobrachium australe — Chace and Bruce, 1993: 23, fig. 2. — Li and Bruce, 2006: 619. — Poupin and Juncker, 2010: 66, 2 unnumbered photos.
Material examined. St 13, 07/11/2009, 11–14h30, Malamani mangrove, 12°55'22.08"S, 45° 9'22.08"E, coll. KUW fieldwork, mangrove investigation, hand and nets, mudflats at low tide, 1 female (LC 8.0 mm), MNHN-Na 17579.
Distribution. Type locality: Tahiti. Also known from Madagascar, Seychelles through the Indian Ocean to China (Taiwan), Philippines, Indonesia, and the Pacific islands as far as the Marshall Islands in the North Pacific and the Marquesas Islands in the South Pacific.
Remarks. The specimen agrees with the description and illustration of Chace and Bruce (1993). It was collected together with 1 ovigerous female of Palaemon debilis Dana, 1852 (MNHN-Na 16052) at Station 13. The species was not previously recorded from Mayotte.