Of the more than 30 species of butterflies and moths found in Ireland only two are not present in the Burren. Notable insects present in the Burren include the butterflies the pearl-bordered fritillary ("Boloria euphrosyne"), brown hairstreak ("Thecla betulae"), marsh fritillary ("Euphydryas aurinia") and wood white ("Leptidea sinapis"); the moths, the Burren green ("Calamia tridens", which is only present in Ireland in this area), Irish annulet ("Gnophos dumetata") and transparent burnet ("Zygaena purpuralis"); the hoverfly "Doros profuges" and the water-beetle "Ochthebius nilssoni". This last species is known from just five sites in the world, its type locality in northern Sweden and four marl lakes in The Burren.