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IRELAND-ONLY INVERTEBRATES What are they and where do they occur? IRELAND-ONLY INVERTEBRATES What are they? Species within the geographical area of Britain and Ireland that have : X A only ever been recorded in Ireland B present in Ireland but extinct/not established in Britain C present in Ireland and one other island Burren Green Calamia tridens • Central European species • Feeds on Blue Moor-grass Sesleria caerulea characteristic species of Burren grasslands Selatosomus melancholicus • A click beetle. Discovered but misidentified on the Mullet peninsula by Stelfox • Northern European species montane in Alps/Pyrenees above 1500m Limnoporus rufoscutellatus • Large north Eurasian pondskater • Found at low densities in lakes and large ponds throughout Ireland Irish Bluet Coenagrion lunulatum • Main distribution Ireland, Netherlands, Finland, probably Russia, Mongolia • Northern temperate species mesotrophic ponds Kerry Slug Geomalacus maculosus Caddis fly Limnephilus pati 70N Described from Irish specimens Larvae undescribed Extinct Britain 60N Since 1980 has been seen at one site in Tipperary, one on Isle of Man and two in Germany 50N Calcareous fens 10W 0 10E 20E What are they? Number of species by Insect order 45 40 40 35 30 25 20 15 14 10 5 6 6 7 1 1 Microcoryphia Odonata 4 4 Phthiraptera Trichoptera 0 Coleoptera Diptera Hemiptera Hymenoptera Lepidoptera Cumulative number of species 80 70 60 50 40 30 20 10 0 1800 -1899 -1950 -1960 -1970 -1980 -1990 -2000 -2012 Occurrence by Habitat 35 Wet 30 Dry 25 20 15 10 5 0 Peatlands Freshwater Grassland & Marsh Coastland Cultivated & built land Exposed rock & disturbed ground Heath & dense bracken Not applicable D iver sity 1 (196) 2 (48) 3 (10) 4 (6) 5 (3) 6 (3) 7 (0) 8 (1) 9 - 15 (2) Lough Neagh The Burren Pollardstown Fen Killarney National Park Grassland species Wetland species D iver sity 1 2 D iver sity 3 1 4 2 5 3 6 4 7 5 8 6 Ireland-only Insects D iver sity Ireland-only Vascular Plants D iver sity 1 (196) 1 2 (48) 2 3 (10) 3 4 (6) 4 5 (3) 5 6 (3) 6 7 (0) 7 8 (1) 8 9 - 15 (2) Praeger on turloughs • ‘The animals of the turloughs have not been examined but the abrupt changes of water-level would not seem to be favourable to the presence of any varied or characteristic fauna.’ Praeger on The Burren • ‘The fauna (not yet fully examined) offers little of remark.’ Fairy Shrimp Tanymastix stagnalis • • • • Primitive freshwater crustacean Lives in temporary cool water pools with no fish 7 Irish sites; most in the east Burren wetlands Eggs survive drying, hatch after rewetting