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Thestor Dicksoni
''Thestor dicksoni'', the Dickson's skolly, is a butterfly of the family Lycaenidae. It is found in South Africa. The wingspan is 34-37.5 mm for males and 43–45 mm for females. Adults are on wing from December to April. There is one generation per year. Subspecies *''Thestor dicksoni dicksoni'' (montane fynbos in the Dasklip Pass near Porterville to the Roodezandsberg near the Tulbagh Kloof) *''Thestor dicksoni malagas'' Dickson & Wykeham, 1994 (along the Atlantic coast and on the Langebaan peninsula) *''Thestor dicksoni warreni'' Ball, 1994 (arid strandveld Karoo near Graafwater Graafwater is a town in the Sandveld in the Western Cape province of South Africa situated 300 km from Cape Town, about halfway between Clanwilliam and Lamberts Bay. Graafwater is the Afrikaans term for "digging for water" referring to the Afrikaa ..., between Clanwilliam and Lambertsbaai) References Butterflies described in 1954 Thestor Endemic butterflies of South Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norman Denbigh Riley
Norman Denbigh Riley CBE (26 September 1890 London – 26 May 1979) was a British entomologist with a special interest in the Lepidoptera and in particular the Lycaenidae. For many years he was keeper of entomology at the British Museum. His first schooling took place at Dulwich College where his interest in natural history and Lepidoptera became evident. Richard South, the prominent entomologist was the Riley family's neighbour in Balham and encouraged Norman Riley in his hobby. After he finishing school Riley enrolled at the Imperial College in order to take a course in entomology, and managed to find work there as a demonstrator under Ray Lankester, who was then director of the British Museum. At age 21 he was appointed as an assistant in the Entomology Department. With the outbreak of World War I in 1914, Riley joined the Royal Army Service Corps, and saw service in France. At the end of the war he was discharged with the rank of captain and resumed his work at the museum, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterfly
Butterflies are insects in the macrolepidopteran clade Rhopalocera from the Order (biology), order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The group comprises the large superfamily (zoology), superfamily Papilionoidea, which contains at least one former group, the skippers (formerly the superfamily "Hesperioidea"), and the most recent analyses suggest it also contains the moth-butterflies (formerly the superfamily "Hedyloidea"). Butterfly fossils date to the Paleocene, about 56 million years ago. Butterflies have a four-stage life cycle, as like most insects they undergo Holometabolism, complete metamorphosis. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very rapidly, and when fully developed, pupate in a chrysalis. When metamorphosis is complete, the pupal skin splits, the adult insect climbs o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycaenidae
Lycaenidae is the second-largest family of butterflies (behind Nymphalidae, brush-footed butterflies), with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfly species. The family comprises seven subfamilies, including the blues (Polyommatinae), the coppers (Lycaeninae), the hairstreaks (Theclinae), and the harvesters (Miletinae). Description, food, and life cycle Adults are small, under 5 cm usually, and brightly coloured, sometimes with a metallic gloss. Larvae are often flattened rather than cylindrical, with glands that may produce secretions that attract and subdue ants. Their cuticles tend to be thickened. Some larvae are capable of producing vibrations and low sounds that are transmitted through the substrates they inhabit. They use these sounds to communicate with ants.Pierce, N. E.; Braby, M. F.; Heath, A.; Lohman, D. J.; Mathew, J.; Rand, D. B. & Travassos, M. A. (2002)"The eco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wingspan
The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of , the official record for a living bird. The term wingspan, more technically extent, is also used for other winged animals such as pterosaurs, bats, insects, etc., and other aircraft such as ornithopters. In humans, the term wingspan also refers to the arm span, which is distance between the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90º angle. Former professional basketball player Manute Bol stood at and owned one of the largest wingspans at . Wingspan of aircraft The wingspan of an aircraft is always measured in a straight line, from wingtip to wingtip, independently of wing shape or sweep. Implications for aircraft design and anima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasklip Pass
Dasklip Pass is situated in the Western Cape province of South Africa on an off-road near Porterville along the R365 highway. The road provides access to the plateau in the Groot Winterhoek mountains and the Groot Winterhoek Wilderness Area; summiting at a height of 700 metres above sea level. It was privately built by farmers located on the plateau. The road was upgraded to an asphalt road in the early 2000s. The road is noted for both its views of the Swartland The Swartland is a region of Western Cape Province that begins some north of Cape Town and consists of the area between the towns of Malmesbury in the south, Darling in the west, Piketberg in the north, Moorreesburg in the middle and the Riebee ... plains below and as a popular launch site for hang gliders. During the 2015 Western Cape fire season a fire fighter died when his vehicle veered off the pass. Gallery File:Dasklip Pass.jpg, Road sign on the R365 turnoff to the pass File:Dasklip Pass01.jpg, Part of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langebaan
Langebaan is a town in the Western Cape province of South Africa on the eastern shore of Langebaan Lagoon. Langebaan is situated 120 km north of Cape Town, just off the R27, about 28 km from Vredenburg and 20 km from Saldanha Bay. The Lagoon stretches for 17 km from Saldanha Bay, past Langebaan to Geelbek in the South. In places it is up to 4 km wide. History The Langebaan Lagoon was formed by the rising and falling of sea levels during pre-historic times. This is unlike most lagoons which form where fresh water rivers enter the sea. As a result, Langebaan Lagoon is purely a salt water lagoon. As far back as 500 000 years ago, early Homo sapiens were probably present in the area, living in groups and hunting small game, displacing carnivores, such as lions, from their kills and gathering plant foods. They made fire as protection and for cooking and probably made simple shelters from branches. They used animal skins for warmth and clothing, and also made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graafwater
Graafwater is a town in the Sandveld in the Western Cape province of South Africa situated 300 km from Cape Town, about halfway between Clanwilliam and Lamberts Bay. Graafwater is the Afrikaans term for "digging for water" referring to the Afrikaans farming culture found in South Africa at the time of establishment. It is located in the Cederberg Municipality. Graafwater is often divided into Graafwater North and Graafwater South. After the railway junction between Cape Town and Bitterfontein was built in 1910, the town Graafwater was established. The local Dutch Reformed Church of Leipoldtville developed the town further. The Graafwater Dutch Reformed church formed its own congregation after a few years. Tourist attractions * The Heerenlogement - A cave about 30 km from the town that 'lodged' both Simon van der Stel Simon van der Stel (14 October 1639 – 24 June 1712) was the last commander and first Governor of the Dutch Cape Colony, the settlement at the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butterflies Described In 1954
Butterflies are insects in the macrolepidopteran clade Rhopalocera from the order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The group comprises the large superfamily Papilionoidea, which contains at least one former group, the skippers (formerly the superfamily "Hesperioidea"), and the most recent analyses suggest it also contains the moth-butterflies (formerly the superfamily "Hedyloidea"). Butterfly fossils date to the Paleocene, about 56 million years ago. Butterflies have a four-stage life cycle, as like most insects they undergo complete metamorphosis. Winged adults lay eggs on the food plant on which their larvae, known as caterpillars, will feed. The caterpillars grow, sometimes very rapidly, and when fully developed, pupate in a chrysalis. When metamorphosis is complete, the pupal skin splits, the adult insect climbs out, and after its wings have expanded and dried, it flie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thestor
''Thestor'' is a genus of butterflies in the family Lycaenidae Lycaenidae is the second-largest family of butterflies (behind Nymphalidae, brush-footed butterflies), with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterf .... The species are Afrotropical. Species *'' Thestor barbatus'' Henning & Henning, 1997 – bearded skolly *'' Thestor basutus'' (Wallengren, 1857) – Basuto skolly, Basuto magpie *'' Thestor brachycerus'' (Trimen, 1883) – Knysna skolly *'' Thestor braunsi'' van Son, 1941 – Braun's skolly *'' Thestor calviniae'' Riley, 1954 – Hantamsberg skolly *'' Thestor camdeboo'' Dickson & Wykeham, 1994 – Camdeboo skolly *'' Thestor claassensi'' Heath & Pringle, 2004 – Claassen's skolly *'' Thestor compassbergae'' Quickelberge & McMaster, 1970 – Compassberg skolly *'' Thestor dicksoni'' Riley, 1954 – Dickson's skolly *'' Thestor dryburghi'' van Son, 1966 – Dryburgh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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