Palaemon ( Macrobrachium ) placidulus De Man, 1892: 489 Palaemon ( Parapalaemon ) Horstii De Man 1892 Macrobrachium horstii Epigean And Hypogean Freshwater Shrimps Of Bohol Island, Central Philippines (Crustacea: Decapoda: Caridea) Cai, Yixiong Choy, Satish Ng, Peter K. L. Raffles Bulletin of Zoology 2009 2009-02-28 57 1 65 89 61f780b1-8184-4c8e-af25-55a44beb195d (De Man, 1892) De Man 1892 [877,1377,865,890] Malacostraca Palaemonidae Macrobrachium GBIF Animalia Decapoda 21 86 Arthropoda species placidulum      Palaemon( Macrobrachium) placidulus De Man, 1892: 489, Pl.  28 Fig. 48 [ typelocalities: Celebes( Sulawesi), Pulau Selajar,   Flores, and Timor].  Macrobrachium placidulum– Holthuis, 1950: 253, Fig. 51c; Chace & Bruce, 1993: 35, Fig. 14; Cai & Shokita, 2006a: 264.  Macrobrachium placidum– Shokita, 1979: 275.  Macrobrachium horstii– Hwang & Yu, 1982: 164, Fig. 5(not    Palaemon( Parapalaemon) Horstii De Man 1892).  Macrobrachiumcf  horstii– Shy & Yu, 1998: 30.   Material examined. –One male, cl 14.2 m, ZRC2007.0314, Alijanan Bridge, stream, S. Duero, coll. B. Sket, 5 Mar.1999;  3 males, cl 15.3–17.4 mm, ZRC 2007.0315, river outside Inabacan Cave, Antequrra, coll. Y. Caiet al.,  16 Dec.2000; 1 male, cl 8.4 mm,  1 female, cl 10.3 mm, ZRC 2007.0316, river outside Inabacan Cave, Antequrra, coll. Y. Caiet al.,  18 Dec.2000.    Remarks. – Macrobrachium placidulumis a common freshwater species in the Philippines. It is distributed from Ryukyu Islands, Taiwan, the Philippines, Palau, and eastern Indonesia, to New Guinea, as well as Fiji(Chace & Bruce, 1993; Choy, 1984). [845,1448,957,978] Pulau Selajar 21 86 1 Sulawesi Utara 2000-12-16 ZRC Y. Cai Inabacan Cave 21 86 ZRC 2007.0315 3 3 2000-12-18 ZRC Y. Cai Inabacan Cave 21 86 ZRC 2007.0316 1 1