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Hexophthalma
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Albospinosa
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Spatulata
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus ''Sicarius (spider), Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species ''Hexophthalma hahni, Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of Opiliones, harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus ''Sicarius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Leroyi
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Goanikontesensis
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Dolichocephala
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Damarensis
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Binfordae
''Hexophthalma'' is a genus of spiders in the family Sicariidae. Although the genus was originally erected in 1878 (then with the name ''Hexomma''), it was merged into the genus '' Sicarius'' in the 1890s, and remained unused until revived in 2017, when it was discovered that the African species then placed in ''Sicarius'' were distinct. The English name six-eyed sand spiders is used for members of the genus, particularly ''Hexophthalma hahni''. Species in the genus have necrotic (dermonecrotic) venom, and can potentially cause serious or even life-threatening wounds. Taxonomy The genus was first created in 1878 by Friedrich Karsch as ''Hexomma'', with the sole species '' Hexomma hahni''. By 1879, though, Karsch had realized that this name had already been used in 1877 for a species of harvestman, so he published the replacement name ''Hexophthalma''. In 1893, Eugène Simon transferred ''Hexophthalma hahni'' to the genus '' Sicarius'', and ''Hexophthalma'' fell out of use, until ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sicarius (spider)
''Sicarius'' is a genus of recluse spiders that is potentially medically significant to humans. It is one of three genera in its family, all venomous spiders known for a bite that can induce loxoscelism. They live in deserts and arid regions of the Southern Hemisphere, and females use a mixture of sand and silk when producing egg sacs. The name is Latin for assassin. Description ''Sicarius'' spiders can grow up to long, and have six eyes arranged into three groups of two (known as "dyads"). Physically, they resemble crab spiders and members of the '' Homalonychus'' genus. They lack the characteristic violin-shaped marking of the more well-known members of its family, Sicariidae the recluse spiders. They can live for a very long time without food or water. Some can live for up to fifteen years, making them among the longest-lived spiders, behind the trap-door spiders and tarantulas, many known to live for twenty to thirty years. The oldest recorded spider is Number 16, a tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sicariidae
Sicariidae is a family of six-eyed venomous spiders known for their potentially necrotic bites. The family consists of three genera and about 160 species. Well known spiders in this family include the brown recluse spider and the six-eyed sand spider. Description ''Loxosceles'', commonly known as "recluse spiders" or "violin spiders", is distributed nearly worldwide in warmer areas. ''Hexophthalma'' and '' Sicarius'', commonly known as "sand spiders" or "assassin spiders", live in the deserts of southern Africa and South to Central America, respectively. They are known for their self-burying behavior and the ability to go for long periods without food or water. All members have six eyes arranged in three groups of two (dyads). Violin spiders are usually brownish with a darker brown characteristic violin marking on the cephalothorax. They are also haplogyne, meaning the females possessing unsclerotised genitals. ''Hexophthalma'' and ''Sicarius'' resemble crab spiders and lack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexophthalma Hahni
''Hexophthalma hahni'' ( synonyms ''Sicarius hahni'' and ''Sicarius testaceus''), known along with other members of the genus as the six-eyed sand spider, is a member of the family Sicariidae, found in deserts and other sandy places in southern Africa. Due to their flattened stance and laterigrade legs, they are also sometimes known as six-eyed crab spiders. Its specific name honours Carl Wilhelm Hahn. Venom All species of ''Hexophthalma'' produce venom that can have necrotic (dermonecrotic) effects, capable of causing serious or even life-threatening wounds, particularly if the wound becomes infected or the venom spreads in the body. The necrotic effects are caused by a family of proteins related to sphingomyelinase D Sphingomyelin phosphodiesterase D (EC 3.1.4.41, sphingomyelinase D) is an enzyme of the sphingomyelin phosphodiesterase family with systematic name sphingomyelin ceramide-phosphohydrolase. These enzymes catalyse the hydrolysis of sphingomyelin, res ..., present i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxosceles
The recluse spiders (''Loxosceles'' (), also known as brown spiders, fiddle-backs, violin spiders, and reapers, is a genus of spiders that was first described by R. T. Lowe in 1832. They are venomous spiders known for their bite, which sometimes produces a characteristic set of symptoms known as loxoscelism. Recluse spiders are now identified as members of the family Sicariidae, having formerly been placed in their own family, the Loxoscelidae. Although recluse spiders are feared, they are usually not aggressive. Relation with other spiders Sicariidae are of the superfamily Scytodoidea. Other families in the Scytodoidea include Drymusidae, Scytodidae, and Periegopidae. Habitat and appearance ''Loxosceles'' is distributed nearly worldwide in warmer areas. All have six eyes arranged in three groups of two (dyads) and some are brownish with a darker brown characteristic violin marking on the cephalothorax. However, the "violin marking" cannot be used as a reliable way to identif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Namibia
Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and east. Although Kazungula, it does not border Zimbabwe, less than 200 metres (660 feet) of the Botswanan right bank of the Zambezi, Zambezi River separates the two countries. Namibia gained independence from South Africa on 21 March 1990, following the Namibian War of Independence. Its capital and largest city is Windhoek. Namibia is a member state of the United Nations (UN), the Southern African Development Community (SADC), the African Union (AU) and the Commonwealth of Nations. The driest country in sub-Saharan Africa, Namibia has been inhabited since pre-historic times by the San people, San, Damara people, Damara and Nama people. Around the 14th century, immigration, immigrating Bantu peoples arrived as part of the Bantu expansion. Since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
