Platypleura sylvia

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Platypleura sylvia
Pycna sylvia00.png
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Auchenorrhyncha
Family: Cicadidae
Genus: Platypleura
Species:
P. sylvia
Binomial name
Platypleura sylvia
Distant, 1899
Synonyms

Pycna sylvia(Distant, 1899)

Platypleura sylvia is a species of cicada endemic to South Africa. It was first described and named by William Lucas Distant in 1899 in the Annals and Magazine of Natural History . [1] Insecta transvaaliensia was self-published by Distant and appeared in twelve parts over the period 1900-1911. The series was an account of Distant's insect-collecting trips through the Transvaal. The collected parts were published as a single volume after Distant's death by Francis Edwards of London in 1924.

Specimens of this species were collected in 1906 and then not found again in the field until 2001 "when small, localised populations were discovered during a faunal survey for the Environmental Management Programme Report for the Anglo Platinum Der Brochen Platinum project in the Groot Dwars River valley, Mpumalanga." - Platypleura sylvia As a result a behavioural study was carried out in the Groot Dwars River valley in 2001 and 2002, during which researchers found that the adult life stage of the insect lasted six to eight weeks during the months of November and December, and that its distribution is extremely localised and confined to a number of valleys in Sekhukhuneland. This cicada is found in closed bushveld that includes the tree Vitex obovata , a member of the Verbenaceae, a tree also endemic to South Africa and Eswatini, and with which it has a close and exclusive relationship. A number of cicadas have evolved this affinity for a single species of tree. Researchers observed a female drilling holes in a dry twig and depositing her eggs. Males spread their wings and arch their backs when calling, a posture which is believed to amplify their call, best described as "zeep".

Cicada nymphs were found down to 50 centimetres (20 in) below the soil surface attached to the roots of Vitex obovata and exuviae were found above ground on trees of the same species housing calling adults, and on other plant species when no adults were present. The duration of the larval stage is as yet undetermined, but is thought to be something of the order of six or seven years underground.

P. sylvia is confined to the valley of the Groot Dwars River (24°55′ S, 30°05′ E), a tributary of the Steelpoort River, and occurs on the farms Helena, Der Brochen, Mareesburg and also the Didingwe River Lodge property, with a slight spill-over to neighbouring areas. The species' tragedy is its occurrence on geological formations rich in platinum. The area is actively mined by the Anglo American Platinum Corporation committed to "minimising its environmental impact at this operation by implementing best practice in land and environmental management". [2] [3] Other mining companies dismiss concerns by stating that the species is "rare but not on IUCN Red List due to insufficient data", ignoring its disappearance for almost a century and equating "insufficient data" with a licence to act irresponsibly. [4]

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The cicadas are a superfamily, the Cicadoidea, of insects in the order Hemiptera. They are in the suborder Auchenorrhyncha, along with smaller jumping bugs such as leafhoppers and froghoppers. The superfamily is divided into two families, the Tettigarctidae, with two species in Australia, and the Cicadidae, with more than 3,000 species described from around the world; many species remain undescribed. Nearly all of cicada species are annual cicadas with the exception of the few North American periodical cicada species, genus Magicicada, which in a given region emerge en masse every 13 or 17 years.

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<span class="mw-page-title-main">Periodical cicadas</span> Genus of true bugs native to North America

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Sphecius speciosus, the eastern cicada-killer wasp, is a large, solitary digger wasp species in the family Bembicidae. They are so named because they hunt cicadas and provision their nests with them. Cicada killers exert a measure of natural control on cicada populations, and as such, they may directly benefit the deciduous trees upon which the cicadas feed. Sometimes, they are erroneously called sand hornets, despite not truly being hornets, which belong to the family Vespidae.

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<span class="mw-page-title-main">Leafhopper</span> Family of insects

Leafhopper is the common name for any species from the family Cicadellidae. These minute insects, colloquially known as hoppers, are plant feeders that suck plant sap from grass, shrubs, or trees. Their hind legs are modified for jumping, and are covered with hairs that facilitate the spreading of a secretion over their bodies that acts as a water repellent and carrier of pheromones. They undergo a partial metamorphosis, and have various host associations, varying from very generalized to very specific. Some species have a cosmopolitan distribution, or occur throughout the temperate and tropical regions. Some are pests or vectors of plant viruses and phytoplasmas. The family is distributed all over the world, and constitutes the second-largest hemipteran family, with at least 20,000 described species.

<span class="mw-page-title-main">William Lucas Distant</span> British entomologist (1845–1922)

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<i>Aleeta</i> Species of insect

Aleeta is a genus of cicadas with the only species Aleeta curvicosta, one of Australia's most familiar insects. Native to the continent's eastern coastline, it was described in 1834 by Ernst Friedrich Germar.

<i>Psaltoda plaga</i> Species of true bug

Psaltoda plaga is a species of cicada native to eastern Australia, from Maryborough in central Queensland to Bega in southern New South Wales. Adult cicadas appear over the summer and inhabit forested areas near bodies of water. The predominantly black form from the Sydney and Central Coast regions is commonly known as the black prince, while the term silver knight is used for the species as a whole.

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<i>Euterpnosia</i> Genus of cicadas

Euterpnosia is a genus of cicada native to the island of Formosa, the Ryukyu Archipelago, Japan, Hainan and mainland Asia - China, Bhutan, Nepal and Vietnam. The type species is Euterpnosia chibensisMatsumura, 1917. Until 2013 this genus was placed in the subtribe Leptopsaltriina, but is now considered typical of the Euterpnosiina Lee, 2013.

<i>Tibicen</i> Former genus of cicadas

Tibicen is a former genus name in the insect family Cicadidae that was originally published by P. A. Latreille in 1825 and formally made available in a translation by A. A. Berthold in 1827. The name was placed on the Official Index of Rejected and Invalid Generic Names in Zoology by the International Commission on Zoological Nomenclature in 2021. Certain European cicada species that were included by some authors in this genus at the time of its suppression are now listed under genus Lyristes Horváth, 1926. Other formerly-Tibicen species are placed in the tribe Cryptotympanini and include the genera Auritibicen Lee, 2015, Hadoa Moulds, 2015 Megatibicen Sanborn and Heath, 2016, and Neotibicen Hill and Moulds, 2015.

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<i>Chremistica ochracea</i> Species of true bug

Chremistica ochracea is a species of cicada in the suborder Auchenorrhyncha, which includes cicadas, leafhoppers, planthoppers, treehoppers, froghoppers and spittlebugs. They are usually referred to as 'thin winged cicada' in Taiwan and 'peaceful cicada' in China due to their abundance in these areas. They can be identified by their green appearance with thin, greenish, transparent wings and are heavily distributed in China, Taiwan, Japan, India and Malaya. However, there are limited number of scientific papers that describe the characteristics and behaviour of this species in detail.

References

  1. W. L. Distant (1899). "On two undescribed Cicadas from Transvaal". Annals and Magazine of Natural History . 7th ser. 3 (13): 81–82. doi:10.1080/00222939908678081.
  2. Sustainable Development Report
  3. Insecta transvaaliensia - W. L. Distant (Francis Edwards, London, 1924)
  4. "Home | Home | Merafe Resources".