However, insecticide use has ceased in urban areas due to concerns over environmental consequences.  Caterpillars grow slowly throughout the first three instars, taking until June to develop over the winter. Bogong Mouths are found in southern Australia, including Tasmania. The Bogong moth story is a fascinating example of how complex insect life cycles don’t translate well to simplified sound bites.  Incubation times vary depending on temperature, with eggs hatching after a period of 4â7 days in laboratory conditions. We need citizen scientists to help figure out where they're ending up. Butterflies and moths are a group of insects known as lepidopterans, which means 'scaly wings'.  In recent years, it has become well known for its accidental invasion of major cities like Canberra, Melbourne, and Sydney due to strong winds during its spring migration. If you're in Canberra in late September or early November, look out for Bogong moths around major public buildings. During spring, they fly south to south-eastwards, to high altitude regions in the southern part of the Dividing Range, where they remain inactive (aestivation) throughout the summer months. The arsenic is present at low levels in the soil of their larval pasturelands and is stored in the body of the adult moth. Aborigines had a good knowledge and understanding of the habits of the Bogong Moth. How long do butterflies and moths live? The average lifespan of a moth is 12 months. An adult's wingspan is usually 4-5cm long and their body length is up to 2.5cm long.  While some water drinking has been observed, no evidence of copulation or active foraging has been found during these periods of activity. It is one of the largest moths in North America.  In autumn, the moths migrate again and return to their breeding grounds, laying eggs and dying.  Additionally, bogong moths may use an internal magnetic compass to aid in navigation, as seen in the similar monarch butterfly. , Millions of bogong moths have been blown off course from their spring migration into major cities like Canberra, Melbourne, and Sydney due to strong winds, with notable instances of bogong moth invasions including the 2000 Olympics in Sydney.  While no source has been determined, concerns have been raised over the possible role of agriculture in the bioaccumulation of arsenic due to its presence in historically and presently-used insecticides. You have reached the end of the page. , The moth's name, bogong, is derived from the Australian Aboriginal Dhudhuroa word bugung, describing the brown colouration of the moth. Crevices regulate their environment through wind flow, and caves generally have more regular temperatures and greater humidity. The average weight of an adult bogong moth is 0.326 grams.  In the Australian state of New South Wales, a series of mountains in the Kosciuszko National Park are named the Bogong Peaks. They really are nothing much to look at, and with a wingspan of only 4-5 centimetres they are far from large. The larvae burrow into their feeding source and, once hatched, spin silken cocoons in which to pupate. The Australian Museum respects and acknowledges the Gadigal people of the Eora Nation as the First Peoples and Traditional Custodians of the land and waterways on which the Museum stands.  The moth was said to have a nice nutty flavor that was most similar to walnuts or almonds. , Bogong moth eggs and larvae are primarily found in self-mulching soils (soil that mixes itself) and crop pastures, where both wild and agricultural larval food sources are abundant during the autumn and winter seasons.