Macrobrachium idae (Heller, 1862)

Cai, Y., Naiyanetr, P. & Ng, P. K. L., 2004, The freshwater prawns of the genus Macrobrachium Bate, 1868, of Thailand (Crustacea: Decapoda: Palaemonidae), Journal of Natural History 38 (5), pp. 581-649 : 585-586

Macrobrachium idae (Heller, 1862)

Palaemon Idae Heller, 1862 : 416, pl. 2: figures 40, 41 [type locality: Borneo].

Palaemon (Eupalaemon) ritsemae De Man, 1897: 774 [type locality: Atjeh, north-western Sumatra].

Palaemon (Eupalaemon) robustus De Man, 1902: 771 , pl. 24: figure 48 [type locality: Halmahera , Indonesia].

Macrobrachium palawanensis Johnson, 1962: 307 , figure 1 [type locality: Palawan Island , Philippines].

Macrobrachium idae: Holthuis, 1950: 142 , figure 33; 1980: 92; Johnson, 1961: 56; Lumubol. 1980: 500, figure (under the name of Macrobrachium equidens (Dana) , see Remark); Chace and Bruce, 1993: 27, figure 6; Naiyanetr, 1992: 18; 1998: 32; Yeo et al., 1999: 266; Cai and Ng, 2001: 678.

Material examined

South Thailand. One W ( ZRC 2000.2602 ), Ranong Province: Kapoe District: Klong Ban Man waterfall, along highway 4 milestone 22 km to Kapoe , 9°27∞24.2◊N, 98°30∞31.1◊E, coll. D. C. J. Yeo et al., 12 August 1997 ; 1 X, cl 8.8 mm ( ZRC 2000.2603 ), Krabi Province, Khlong Sa Kein at Nan Nai Sa, coll. M. Kottelat, 5 November 1995 ; 2 WW, cl 1.8–2.0 mm ( ZRC 2000.2604 ), Narathiwat Province, 10 km north of Bocho on road Narathiwat-Sai Buri, coll. M. Kottelat, 1 November 1995 ; 3 WW, cl 23.5–25.7 mm (CU 1997.16), Phang Nga; 1 W, 2 XX, cl 12.0–20.0 mm (CU 1997.9), Narathiwat, 15 June 1983 ; 1 W, cl 14.0 mm, 2 ovigerous XX, cl 15.0–20.0 mm (CU 1997.10), Ranong, 31 July 1988 ; 1 W, cl 21.5 mm (CU 1997.11), Thai Muang, Phang Nga, 28 August 1986 ; 3 ovigerous XX, cl 13.5–14.5 mm (CU 1997.12), Narathiwat (from market), 11 January 1993 ; 3 ovigerous XX, cl 17.5–19.0 mm, Thai Muang , 1993; 3 WW, cl 6.0–12.0 mm, 6 XX (4 ovigerous), cl 8.5–10.0 mm, river in Phang Nga, 23 August 1986 ; 1 W, cl 6.5 mm, Ramru waterfall, Phang Nga, September 1986 ; 1 W, cl 7.5mm, 1 X, cl 6.0 mm, 1 ovigerous X, cl 8.5 mm, Thai Muang, Phang Nga, 6 August 1986 ; 1 ovigerous X, cl 11.0 mm (CU 1997.53), no data; 5 WW, cl 15.0– 18.5 mm (CU 1997.82), Naban , Phang Nga, no date; 2 WW, cl 24.0 mm (CU 1997.85), Phang Nga, 7 September 1986; five specimens (CU 1997.91) , Phang Nga, 7 September 1986; two specimens (CU 1997.157) , Phang Nga, coll. P. Naiyanetr, 17 March 1982 ; 1 W, cl 21.8 mm (CU 1997.229), Songkhla, 7 November 1982; 13 specimens ( ZRC 2000.2652 ) , Krabi Province, spring pool, source of Khlong Sa keiu at Ban Sa Keiu , pH 6.5, coll. M. Kottelat, 6 November 1995 .

Remarks

Macrobrachium idae has a wide distribution in the Indo-West Pacific region ranging from Madagascar to the Admiralty Islands and South-East Asia. Cai and Ng (2001) recently designated lectotypes for P. idae Heller, 1862 , and Palaemon (Eupalaemon) robustus De Man, 1902 , and confirmed the synonymy of P. idae with P. (Eupalaemon) robustus and M. palawanensis Johnson, 1962 . Macrobrachium idea has previously been reported from Songkhla, and Nakhon Si Thammarat, Samut Sakhon and Ranong by Lumubol (1980). In the attached figures, Lumubol (1980) figured this species under the name ‘ Macrobrachium equidens (Dana) ’, while the species he indicated as ‘ M. idae (Heller) ’ is actually M. equidens instead.