\n<\/p>\n
The large tortoiseshell \u2013 an elusive and enigmatic butterfly that became extinct in Britain in the last century \u2013 is a UK resident species once again, with a flurry of early spring sightings.<\/p>\n
Britain\u2019s list of native butterflies has increased to 60 with the return of the insect after individuals emerged from hibernation in woodlands in Kent, Sussex, Hampshire, Dorset, Cornwall and the Isle of Wight.<\/p>\n
The sightings have led Butterfly Conservation to declare the large tortoiseshell (Nymphalis polychloros<\/em>) a resident species in the UK \u2013 as opposed to a migratory one \u2013 for the first time in the charity\u2019s 58-year history.<\/p>\n \u201cThe signs are really positive, which is lovely,\u201d said Richard Fox, head of science for Butterfly Conservation. \u201cIt is resident and therefore it is another species to add to Britain\u2019s total, which is good news. It\u2019s not well-established enough yet to say it\u2019s definitely back for good and will be widespread across multiple landscapes \u2013 we\u2019re still in that zone of uncertainty at the moment, but there are exciting signs.\u201d<\/p>\n Unlike the small tortoiseshell (Aglais urticae<\/em>), which is found in gardens and whose caterpillars eat nettles, the large tortoiseshell is a tree-dwelling butterfly whose caterpillars feed on trees including elm, willow, aspen and poplar.<\/p>\n <\/span>A small tortoiseshell \u2013 with white patches near its wingtips that are not found on the larger species.<\/span> Photograph: Ray Wilson\/Alamy<\/p>\n It is bigger, as its name suggests, and lacks the white markings found on its more widespread counterpart.<\/p>\n The loss of elms due Dutch elm disease was once considered a factor in the large tortoiseshell\u2019s extinction in the UK by the 1960s, but lepidopterists now believe Britain may have always been at the northerly limit of its natural range and the species\u2019 return is now assisted by global heating.<\/p>\n It last flourished in Britain during a run of fine summers in the 1940s, but in recent years growing numbers have migrated across the North Sea and the Channel as a result of population rises in the Netherlands and France.<\/p>\n Higher temperatures this century have also helped many continental moth species move into or re-establish themselves in Britain, including the spectacular Clifden nonpareil moth.<\/p>\n The large tortoiseshell first reappeared in the UK in significant numbers on the south coast in 2006-07, but many subsequent sightings have been attributed to unauthorised releases by butterfly breeders who are keen to re-establish the charismatic species.<\/p>\n Since 2020, large tortoiseshell caterpillars have been found feeding on trees in the wild \u2013 first in Dorset and now more widely \u2013 confirming that the butterfly is breeding again in Britain.<\/p>\n The insect hibernates as an adult, emerging in spring to mate and lay eggs. Its offspring take to the wing as adult butterflies in midsummer, raising hopes that this spring\u2019s sightings will create a burgeoning population later in the year.<\/p>\n Butterfly Conservation, which has added the species to its first sightings page, is urging people to log any observations on iRecord, a free citizen science app, which is helping build a picture of the butterfly\u2019s distribution and expanding population.<\/p>\n","protected":false},"excerpt":{"rendered":" The large tortoiseshell \u2013 an elusive and enigmatic butterfly that became extinct in Britain in the last century \u2013 is a UK resident species once again, with a flurry of early spring sightings. Britain\u2019s list of native butterflies has increased to 60 with the return of the insect after individuals emerged from hibernation in woodlands<\/p>\n","protected":false},"author":1,"featured_media":46242,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50],"tags":[2711,6659,16359,4403,333,23662,2616],"class_list":{"0":"post-46241","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-environment","8":"tag-butterfly","9":"tag-confirmed","10":"tag-extinct","11":"tag-large","12":"tag-longer","13":"tag-tortoiseshell","14":"tag-wildlife"},"_links":{"self":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts\/46241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=46241"}],"version-history":[{"count":0,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/posts\/46241\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=\/wp\/v2\/media\/46242"}],"wp:attachment":[{"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=46241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/naijaglobalnews.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=46241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}