Caridina serratirostris De Man, 1892

Cai, Yixiong, Ng, Peter K. L. & Choy, Satish, 2007, Freshwater Shrimps Of The Family Atyidae (Crustacea: Decapoda: Caridea) From Peninsular Malaysia And Singapore, Raffles Bulletin of Zoology 55 (2), pp. 277-309 : 279-280

Caridina serratirostris De Man, 1892

Caridina serratirostris De Man, 1892: 382 , Pl. 23 Figs. 28–28e [type locality: “ Bangkalan ” and “ Bonea ” rivers, Selajar, Indonesia].

Caridina serratirostris – Cai & Shokita, 2006a: 247; 2006b: 2139.

Caridina celebensis – Yeo et al., 1999: 214, Figs. 8 , 9 ; Wowor et al., 2004: 341, Fig. 6I .

Material examined. – Peninsular Malaysia: 12 specimens, ZRC1998.863 , Sungai Paya , Pulau Tioman, Malaysia, coll. P. K. L. Ng et al., 25 Jun.1997 ; 7 specimens, ZRC 1996.1752 , Sungai Keliling , Pulau Tioman, Malaysia, coll. P. K. L. Ng et al., 27–28 Jun.1996 ; 14 specimens, ZRC 1996.1753 , Sungai Paya , Kampung Paya , Pulau Tioman, Malaysia, coll. P. K. L. Ng et al., 25–27 Jun.1996 ; 1 specimen, ZRC 1996.1754 , Kampung Paya , Sungai Pasal upstream (about 15 min walk from start of trail to Sungai Paya), Pulau Tioman, Malaysia, coll. H. H. Tan et al., 17 Sep.1995 ; 1 specimen, ZRC 1996.1755 , Sungai Paya , Kampung Paya , Pulau Tioman, Malaysia, coll. P. K. L. Ng et al., 25–27 Jun.1996 ; 2 specimens, ZRC 1996.1769 , left stream at mouth of Sungai Paya , Pulau Tioman, Malaysia, coll. O. Chia & M. J. Ng, 27 Jun.1996 ; 3 specimens, 1990.11854–11856, Kampung Genting , Pulau Tioman, Malaysia, coll. S. S. C. Chong, 28 Jun.1986 ; 4 specimens, ZRC 1990.11860 – 11863 , Kampung Mukut , Pulau Tioman, Malaysia, coll. S. S. C. Chong, 28 Jun.1986 ; 13 females, cl. 3.4–4.0 mm, ZRC1998.864 , Sungai Keliling , coll. Y. Cai & N. K. Ng, 10 Sep.1998 .

Habitats. – Lower reaches of rivers or streams on islands or coastal areas.

Remarks. – Cai & Shokita (2006a) separated C. serratirostris and C. celebensis on the basis of whether there was a tiny arthrobranch present at the base of third maxilliped (present in C. serratirostris vs. absent in C. celebensis ), stating that “All the Tioman specimens here re-examined, though most of them with shorter rostrum, have an arthrobranch on the first pereiopod, thus, should be referred to C. serratirostris . ” So far, in Peninsular Malaysia and Singapore, it is only reported from Pulau Tioman, an island in the South China Sea.

Distribution. – Indo-West Pacific (present study; Cai & Shokita, 2006a).

Figures

Fig. 8. Caridina thambipillaii: A, cephalothorax and cephalic appendages; B, telson; C, distal portion of telson; D, mandible; E, maxillula; F, maxilla; G, first maxilliped; H, second maxilliped; I, third maxilliped; J, preanal carina; K, diaeresis; L, scaphocerite. Scale bars: A = 1 mm, B, D–J = 0.5 mm; C, K = 0.2 mm. (A–C, female, cl 5.9 mm, D–K, ovigerous female, cl 5.7 mm; all material from Sungai Stunggang, Sarawak, East Malaysia, ZRC).

Fig. 9. Caridina thambipillaii:A, cephalothorax and cephalic appendages; B, first pereiopod; C, second pereiopod; D, third pereiopod; E, dactylus of third pereiopod; F, basis of fourth pereiopod, showing the epipod; G, fifth pereiopod; H, dactylus of fifth pereiopod. Scale bars: A = 1 mm; B–D, F, G = 0.5 mm; E, H = 0.2 mm. (ovigerous female, cl 5.7 mm, Sungai Stunggang, Sarawak, East Malaysia, ZRC).

Fig. 6. Caridina propinqua: A, cephalothorax and cephalic appendages; B, scaphocerite; C, mandible; D, maxillula; E, maxilla; F, first maxilliped; G, second maxilliped; H, third maxilliped; I, first pereiopod; J, second pereiopod; K, third pereiopod; L, fifth pereiopod; M, endopod of male first pleopod; N, appendix masculina and appendix interna of male second pleopod. Scale bars: A, B = 1 mm; C–L = 0.5 mm; M, N = 0.2 mm. (male, cl 2.9 mm, Sungai Sedili, Johor, Peninsular Malaysia, ZRC).