Caridina

Jasmine Richard & Paul F. Clark, 2009, African Caridina (Crustacea: Decapoda: Caridea: Atyidae): redescriptions of C. africana Kingsley, 1882, C. togoensis Hilgendorf, 1893, C. natalensis Bouvier, 1925 and C. roubaudi Bouvier, 1925, Zootaxa 1995, pp. 1-75: 72-73

publication ID

10.5281/zenodo.1455866

persistent identifier

http://treatment.plazi.org/id/03EF5668-7424-C75B-E79D-1ECFFA2FF91A

treatment provided by

Plazi

scientific name

Caridina
status

 

Key to 18 species of Caridina 

1. Posterior margin of telson with stalked plumose processes ( Fig. 6p View Figure ) .........................................................2

- Posterior margin of telson without stalked plumose processes ( Figs. 3n View Figure , 15n View Figure , 25l View Figure , 39j View Figure ).......................... 13

2. Rostrum longer than second segment of antennular peduncle ( Fig. 11e View Figure )................................................... 3

- Rostrum equal to or shorter than second segment of antennular peduncle ( Fig. 36b, c View Figure ), with 2–9 teeth on dorsal margin and teeth absent on ventral margin; uropod diaeresis with 20–22 spinules ( Fig. 37n View Figure ) ......... ............................................................................................................................. C. messofluminis  sp. nov.

3. Rostrum equal to or shorter than middle of third antennular peduncle segment ( Fig. 20c, d View Figure )....................4

- Rostrum equal to or longer than middle of third antennular peduncle segment ( Fig. 11b View Figure )........................ 6

4. Uropod diaeresis spinules less than 12 ....................................................................................................... 5

- Uropod diaeresis spinules 15. Teeth on the dorsal margin of rostrum arranged proximally leaving distal part unarmed, with 1 post-orbital tooth ( Fig. 7b View Figure ); dactylus of the fifth pereiopod with 21 spines; endopod of first male pleopod 0.93 × exopod ( Fig. 8g, h View Figure ); appendix masculina 4.82 × appendix interna and 1.1 × endopod of second male pleopod ( Fig. 8i, j View Figure ) ............................. C. natalensis ( Bouvier, 1925)  comb. nov.

5. 5–9 spinules on dactylus of third pereiopod; 1–7 teeth arranged on ventral margin of rostrum, 55– 65 eggs, 0.45–0.55 × 0.27–0.35mm in size ............................................................................ C. sodenensis  sp. nov.

- 9–14 spinules on dactylus of third pereiopod; 0–10 teeth arranged on ventral margin of rostrum, 15– 20 eggs, 1.2–1.3 × 0.7–0.9mm in size ................................................................. C. amnicolizambezi  sp. nov.

6. Ventral rostral teeth arranged from proximal end ( Fig. 18b, c View Figure ) ...................................................................7

- Ventral rostral teeth arranged distally, below the unarmed dorsal margin ( Fig. 11b View Figure )................................12

7. Teeth on ventral margin of rostrum always arranged to tip ( Fig. 18b, c View Figure )....................................................8

- Teeth on ventral margin of rostrum not always arranged to tip ( Fig. 5b–h View Figure , 26b, c View Figure )..................................10

8. Uropod diaeresis less than 13 spinules ....................................................................................................... 9

- Uropod diaeresis with 14–16 spinules; posterior margin of telson with 1 pair of lateral spines and 3 pairs of stalked plumose processes ........................................................................................ C. okiamnis  sp. nov.

9. Posterior margin of telson with a pair of short lateral spines ( Fig. 19n View Figure ) and 3–4 pairs of stalked plumose

processes; 55– 60 eggs, 0.75–0.9 × 0.4–0.5mm in size ................................................. C. ebuneus  sp. nov.

- Posterior margin of telson with a pair of long lateral spines ( Fig. 31n, o View Figure ) and 1–3 pairs/3 or 5 stalked plumose processes, 10– 15 eggs, 0.9–1.1 × 0.5–0.6mm in size .......................................... C. gaesumi  sp. nov.

10. Dorsal rostral teeth always arranged up to tip ( Fig. 26b, c View Figure ).......................................................................11

- 14–30 dorsal rostral teeth arranged to tip or with a short unarmed distal gap; 2–12 ventral rostral teeth arranged up tip or with a short unarmed distal gap; tip of the rostrum always pointed ( Figure 5 View Figure b-h); 45–86 spinules on dactylus of fifth pereiopod ......................................................... C. togoensis Hilgendorf, 1893 

11. Rostrum equal to the end of antennular peduncle or shorter; 12–18 uropod diaeresis spinules; 12– 16 eggs; endopod of first female pleopod 0.7–0.9 × exopod ...................... C. roubaudi ( Bouvier, 1925)  comb. nov.

- Rostrum equal to or fractionally longer than antennal scale; 6–12 uropod diaeresis spinules; 20– 30 eggs; endopod of first female pleopod 0.5–0.6 × exopod .................................................. C. lineorostris  sp. nov.

12. Stylocerite 0.9–1.1 × basal segment of antennular peduncle ( Fig. 11f View Figure ); dactylus of fifth pereiopod with 65–80 spines; 17–21 uropod diaeresis spinules; endopod of first male pleopod 0.6–0.8 × exopod and with short appendix interna ......................................................................................................... C. evae  sp. nov.

- Stylocerite 0.6–0.8 × basal segment of antennular peduncle ( Fig. 16f View Figure ); dactylus of fifth pereiopod with 20–40 spines; 4–8 uropod diaeresis spinules; endopod of first male pleopod 0.25–0.3 × exopod; appendix interna absent ............................................................................................................. C. ghanensis  sp. nov.

13. Rostrum equal to, longer or shorter than antennal scale............................................................................14

- Rostrum never reaching the end of the antennal scale...............................................................................16

14. Teeth on dorsal margin of rostrum arranged beyond the point of proximal curvature of the ventral margin ( Fig. 14b, c View Figure )................................................................................................................................................15

- Teeth on dorsal margin of rostrum arranged up to point of proximal curvature of ventral margin ( Fig. 34b–d View Figure ), tip of rostrum bifid or acute, unarmed dorsal distal margin of rostrum may be interrupted by a tooth; posterior margin of telson with inner spines equal in length to lateral spines C. umtatensis  sp. nov.

15. Posterior margin of telson protruding beyond lateral spines and with no inner spines ( Fig. 15n View Figure ); no postorbital teeth on dorsal margin of rostrum .............................................................. C. belazoniensis  sp. nov.

- Posterior margin of the telson not protruding beyond lateral spines, 1 pair of lateral spines, 2 or 3 pairs of inner spines ( Fig. 1h View Figure , 3n View Figure ); 3 or 4 post-orbital teeth present on dorsal margin of rostrum ............................. ........................................................................................................................... C. africana Kingsley, 1882 

16. Inner spines on posterior margin of telson either equal to or shorter than lateral spines ( Fig. 39j View Figure )..........17

- Inner spines on posterior margin of telson longer than lateral spines increasing in length towards the midline ( Fig. 25l View Figure ). Rostrum reaches first or second segment of antennular peduncle; dactylus of third pereiopod with 4 or 5 spines, uropod diaeresis with 13 or 14 spinules .............................. C. congoensis  sp. nov.

17. Teeth on ventral margin of rostrum arranged distally below dorsal unarmed margin, dorsal unarmed margin not interrupted by teeth ( Fig. 32b–d View Figure ); dactylus of the fifth pereiopod with 50–60 spines; posterior margin of telson with 1 pair of lateral and 1–2 pairs of shorter inner spines almost equal in length, 75 eggs, 1.05–11 × 0.65–0.7 mm in size .............................................................................. C. susuroflabra  sp. nov.

- Teeth on ventral margin of rostrum arranged from proximal end to tip and distal unarmed dorsal margin interrupted by a tooth ( Fig. 38b View Figure ); dactylus of fifth pereiopod with 32 spines; posterior margin of telson with 1 pair of lateral and 2 pairs of inner spines of unequal length; 55 eggs, 0.59 × 0.35 mm in size ........ ................................................................................................................................ C. malawensis  sp. nov.