Species Diversity

Species diversity among selected groups of Sri Lanka’s fauna and flora in terrestrial and fresh water wetlands.

Taxonomic group Number of species Number of endemic species and % endemism Reference
Land snails 246 204(83%) Ranawana, 2006
Dragonflies 120 57(47.5%) Bedjanic, 2006 and MoENR, 2007
Bees 148 21(14%) Karunaratne and Edirisinghe, 2006
Carabid beetles 525 127(24%) MOFE,1990
Butterflies 243 20(8.2%) Perera and Bambaradeniya,2006
Spiders 501 NA  MoENR, 2007
Freshwater crabs 51 51(100%)  MoENR, 2007
Freshwater fish 821 44(54%) Pethiyagoda, 2006
Amphibians 106+ 90+(85%) Pethiyagoda, et al, 2006
Reptiles(terrestrial 183 92(50%) Ranawana, 2006
Birds (including migrants 482 25 definitive* and 8proposed Kotagama, et al, 2006;
(220 residents) (*5% of all species and 11% of residents)
Mammals 91 16(18%) Weerakoon,et al, 2006
Angiosperms 3771 926(24.55%) Dassanayake and Fosberg (1980-2004) cited in IUCN and MoENR,2007
Pteridophytes (Fems only) 348 48+  IUCN and MoENR,2007
Mosses 560 63+  IUCN and MoENR,2007
Liverworts 303 NA  MoENR,2007
Lichens 661 NA  MoENR,2007

NA-data not available

 

Taxonomic group Number of species
Hard coral species 183
Echinoderms 213
Marine molluscs 228+
Sharks 61+
Rays 31+
Marine reptiles 18+
Marine mammals 38+
Pelargic fishes 1800+

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