Macrobrachium lanceifrons ( Dana, 1852 )

Shokita, Yixiong Cai Shigemitsu, 2006, Report On A Collection Of Freshwater Shrimps (Crustacea: Decapoda: Caridea) From The Philippines, With Descriptions Of Four New Species, Raffles Bulletin of Zoology 54 (2), pp. 245-270 : 266

Macrobrachium lanceifrons ( Dana, 1852)

Palaemon lanceifrons Dana, 1852: 26 [type locality: Manila, Luzon, Philippines]; Cowles, 1914: 364, Pl. 2 Fig. 4 .

Palaemon lanceifrons var. montalbanensis Cowles, 1914: 371 , Pl. 2 Fig 6 [type locality: Montalban , near Manila, Luzon, Philippines].

Macrobrachium lanceifrons var. lanceifrons – Holthuis, 1950: 154.

Macrobrachium lanceifrons var. montalbanense – Holthuis, 1950: 154.

Macrobrachium lanceifrons – Chace & Bruce, 1993: 29.

Material examined. – 1 male, cl 6.7 mm; 1 female, cl 7.7 mm; 1 female, cl 8.8 mm, UR, Binga Lake , Philippines, 13 May.1985 ; 27 males, cl 7.5-14 mm, 1 female, cl 9.3 mm, 1 ovig. female, cl 10.6 mm, egg 0.8x 0.6 mm, UR, San Pablo city, Sampalok Lake, Philippines, 19 Aug.1985 ; 4 males, cl 10-17 mm, 10 females, cl 8.5-10.0 mm, 1 ovig. female, cl 13 mm, UR, Lake Mainit , Mindanao Island, Philippines, 24 Jul.1985 ; 4 males, cl 12-13.5 mm, 4 ovig. females, 7.5-9.0 mm, UR, Naujan Lake , Mindoro Island, Philippines, 14 Aug.1985 ; 2 male, cl 9.5-15 mm, 2 females, cl 9.5-11.5 mm, UR, Pagsanjan River , Philippines, 19 Jul.1985 ; 10 males, cl 13- 16.0 mm, 2 ovig. females, cl 10.5-11.0 mm, UR, Naguilian River , Luzon, Philippines, 14 Jul.1985 .

Remarks. – Macrobrachium lanceifrons has previously only been reported from Luzon. The present records from Mindoro and Mindanao extend its distribution range further south. This is the only endemic Macrobrachium species for Philippines.

Distribution. – Philippines.

Figures

Fig. 4. Caridina buhi, new species, male, cl 3.3 mm, paratype, ZRC, Binahugan River, Buhi, Camarines Sur, Luzon, Philippines: A, cephalothorax and cephalic appendages; B, first pereiopod; C, second pereiopod; D, third pereiopod; E, dactylus of third pereiopod; F, fifth pereiopod; G, dactylus of fifth pereiopod; H, endopod of male first pleopod; I, appeedix interna and appendix masculina of male second pereiopod; J, scaphocerite; K, preanal carina. Scale bars: A, J = 1 mm, B-D, F, K = 0.5 mm, E, G, H, I = 0.1 mm.

Fig. 6. Caridina palawanensis, new species, male, cl 2.8 mm, ZRC, Panitian River, upper stream, ca 30 km from river mouth, Palawan Island, Philippines: A, male second pleopod; B, male first pleopod. Caridina sumatrensis, male, cl 3.2 mm, ZRC, Santacruz River, Palawan Island, Philippines: C, cephalothorax and cephalic appendages, lateral view; D, first pereiopod; E, second pereiopod; F, third pereiopod; G, preanal carina. Potamalpheops miyai, male, cl 3.0 mm, ZRC, Surigao mangrove, Mindanao Island, Philippines:H, cephalothorax and cephalic appendages, lateral view; I, second pereiopod; J, propodus and dactylus of third pereiopod; K, fifth pereiopod; L, uropodal diaeresis. Scale bars: A, B = 0.2 mm, C, H = 1 mm, D-G, I-L = 0.5 mm.