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Frontinella Communis
The bowl and doily spider (''Frontinella pyramitela'') is a species of sheet weaver found in North and Central America. It is a small spider, about long, that weaves a fairly complex and unique sheet Spider web, web system consisting of an inverted dome shaped web, or "bowl," suspended above a horizontal sheet web, or "doily", hence its common name. The spider hangs from the underside of the "bowl", and bites through the web small Fly, flies, Gnat, gnats and other small Insect, insects that fall down into the non-sticky webbing. The webs are commonly seen in weedy fields and in shrubs, and may often contain both a male and a female spider in late summer—like many Linyphiidae, linyphiids, ''Frontinella'' males and females may Cohabitation, cohabitate for some time. Males exhibit competition for female mates both by fighting and sperm competition. Uniquely, these spiders exhibit Thermoregulation, behavioral thermoregulation and have lengthened Circadian rhythm, circadian rhythms. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Athanase Walckenaer
Baron Charles Athanase Walckenaer (25 December 1771 – 28 April 1852) was a French civil servant and scientist. Biography Walckenaer was born in Paris and studied at the universities of Oxford and Glasgow. In 1793 he was appointed head of the military transports in the Pyrenees, after which he pursued technical studies at the École Nationale des Ponts et Chaussées and the École polytechnique. He was elected member of the Institut de France in 1813, was mayor (''maire'') in the 5th arrondissement in Paris and secretary-general of the prefect of the Seine 1816–1825. He was made a baron in 1823. In 1839 he was appointed conservator for the Department of Maps at the Royal Library in Paris and in 1840 secretary for life in the Académie des Inscriptions et Belles Lettres. He was one of the founders of the Société entomologique de France in 1832, and a "resident member" of the Société des observateurs de l'homme. Walckenaer introduced the full biography according to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
