| Riekoperla darlingtoni | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Plecoptera |
| Family: | Gripopterygidae |
| Genus: | Riekoperla |
| Species: | R. darlingtoni |
| Binomial name | |
| Riekoperla darlingtoni (Illies, 1968) | |
Riekoperla darlingtoni, the Mount Donna Buang wingless stonefly, is a species of stonefly in the family Gripopterygidae, which is endemic to Australia.
Riekoperla darlingtoni is found on Mount Donna Buang, a mountain peak in the Victorian Central Highlands which lies in one of the oldest and highest areas of dissected Palaeozoic rocks (formed approximately 500 million years ago) in the Central Highlands of Victoria. The area is also popular tourist attraction throughout the year and the summit is a Scenic Reserve.
The area providing habitat for Riekoperla darlingtoni supports tall sclerophyll forest dominated by alpine ash ( Eucalyptus delegatensis ) with myrtle beech ( Nothofagus cunninghamii ) as a dominant understory tree species. The surrounding forest is dominated by mountain ash ( Eucalyptus regnans ). It apparently occurs only in the area within 1 kilometre (0.62 mi) of the summit of Mount Donna Buang, particularly on the southern slopes and is restricted to the small temporary streams which flow through forest dominated by alpine ash.
The adult stonefly lives within rolled pieces of alpine ash bark suspended in low vegetation along natural drainage courses and in the vicinity of streams. The aquatic nymphs live under stones and in silty gravel in the drainage lines. Of particular scientific interest is the species' ability to survive the annual drying of its habitat, both in the egg stage and by burrowing down to a damper level and its seasonal flexibility in growth and emergence times, which enhances survival during the extremes of climate experienced on mountain tops.
The species has not been discovered in other similar areas despite deliberate searches. [2]
The small brown, wingless stonefly, is one of the only two wingless stoneflies in Australia, and the species was first collected by Darlington in 1931 from the Mount Donna Buang area. A distinguishing feature of the species is its long antennae (up to 100% of its body length).
The Mount Donna Buang Wingless Stonefly has a very small home range thought to be only 2–4 km, this area is protected within the Yarra Ranges National Park but threats still remain. Fuel or herbicide spillages, changes in hydrology and a proposed Mountain Bike Track called the Warburton Mountain Bike Destination directly threaten Mount Donna Buang Stonefly. The Mount Donna Buang Stonefly has recently been reassessed as Critically Endangered under the Victorian State legislation the Flora and Fauna Guarantee Act 1988.
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Leadbeater's possum is a critically endangered possum largely restricted to small pockets of alpine ash, mountain ash, and snow gum forests in the Central Highlands of Victoria, Australia, north-east of Melbourne. It is primitive, relict, and non-gliding, and, as the only species in the petaurid genus Gymnobelideus, represents an ancestral form. Formerly, Leadbeater's possums were moderately common within the very small areas they inhabited; their requirement for year-round food supplies and tree-holes to take refuge in during the day restricts them to mixed-age wet sclerophyll forest with a dense mid-story of Acacia. The species was named in 1867 after John Leadbeater, the then taxidermist at the Museum Victoria. They also go by the common name of fairy possum. On 2 March 1971, the State of Victoria made the Leadbeater's possum its faunal emblem.
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The Victorian Alps, also known locally as the High Country, is a large mountain system in the southeastern Australian state of Victoria. Occupying the majority of eastern Victoria, it is the southwestern half of the Australian Alps, the tallest portion of the Great Dividing Range. The Yarra and Dandenong Ranges, both sources of rivers and drinking waters for Melbourne, are branches of the Victorian Alps.
Mount Stirling is a mountain in the Victorian Alps of the Great Dividing Range, located in the Hume region of Victoria, Australia. The mountain has an elevation of 1,747–1,749 metres (5,732–5,738 ft) above sea level.
Mount Donna Buang is a mountain in the southern reaches of the Victorian Alps of the Great Dividing Range, located in the Australian state of Victoria. Approximately 80 kilometres (50 mi) from Melbourne with an elevation of 1,250 metres (4,101 ft), Mount Donna Buang is the closest snowfield to Melbourne.
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Victoria is the southernmost mainland state of Australia. With an area of 227,594 km2 (87,875 sq mi), it is Australia's sixth largest state/territory, comparable in size to the island of Great Britain or the U.S. state of Utah. It is bound to the northwest by South Australia, directly north by New South Wales, and also shares a maritime border with Tasmania across the Bass Strait to the south. Most of Victoria's northern border lies along the Murray River. The eastern half of the state is dominated by the Australian Alps and the surrounding highlands of the Great Dividing Range, which also to a lesser extent extend far into the west of the state and ease off after The Grampians. By comparison the north and northwest of the state is extremely flat with little prominence.
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