Caridina dennerli, Rintelen & Cai, 2009

Rintelen, Kristina von & Cai, Yixiong, 2009, Radiation Of Endemic Species Flocks In Ancient Lakes: Systematic Revision Of The Freshwater Shrimp Caridina H. Milne Edwards, 1837 (Crustacea: Decapoda: Atyidae) From The Ancient Lakes Of Sulawesi, Indonesia, With The Description Of Eight New Species, Raffles Bulletin of Zoology 57 (2), pp. 343-452 : 355

Caridina dennerli , new species

( Figs. 4-6 ; Table 3)

Material examined. – Holotype: ovigerous female (cl 3.1 mm)( MZB Cru 1540), Lake Matano , east shore, just at entrance to outlet bay, 02°31.54'S, 121°27.00'E, loc. 43-03, on gravel in shallow water, coll. K. & T. von Rintelen, 18 Sep.2003.

3 First and second pereiopod with conspicuously long chelae and fingers (setae), fingers partly orange, body brownish to greenish, usually on rocks or wood (hard substrate), rostrum longer than scaphocerite, collected from the lake .................. ........................................................................... C. longidigita

– First and second pereiopod without conspicuously long fingers, collected from the lake or from rivers ................................ 4

4 Rostrum reaching well beyond end of scaphocerite, first and second pereiopod rather stout, collected from the lake .......... ........................................................................ C. sarasinorum

– Rostrum shorter, reaching slightly beyond end of scaphocerite, first and second pereiopod not conspicuously stout, from rivers .......................................... C. acutirostris , C. schenkeli

Figures

Fig. 4. Caridina dennerli from the Malili lake system. A. Distribution. B.-C. Colour pattern of living animals (not to scale). Pictures courtesy of Chris Lukhaup.

Fig. 5. Caridina dennerli from the Malili lake system. A. Cephalothorax and cephalic appendages, female (ZMB 29049); B. Uropodal diaeresis, male (ZMB 29051); C. Telson, male (ZMB 29156); D. Scaphocerite, male (ZMB 29051); E. Preanal carina, F. Third pereiopod, female (ZMB 29326); G. Fifth pereiopod; H. Distal end of telson male (ZMB 29156); I. Dactylus of third pereiopod female (ZMB 29326); J. Dactylus of fifth pereiopod; K. Endopod of male first pleopod (ZMB 29051); L. Appendix masculina of male second pleopod; M. First pereiopod, male (ZMB 29156); N. Second pereiopod; O. SEM image of anterior part of chela, male (ZMB 29104); P. SEM image of chela and carpus of first and second pereiopods, female (ZMB 29024). Scale bars: A, D = 1.0 mm; C, E-G, K-P = 0.5 mm; B, H-J = 0.1 mm.

Fig. 6. Caridina dennerli from the Malili lake system. A. Mandible (ZMB 29024); B. Maxillula; C. Maxilla; D. second maxilliped; E. third maxilliped; F. first maxilliped. Scale bars: A-F = 1mm.