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Lestes Thoracicus
''Lestes concinnus'' is a species of damselfly in the family Lestidae, the spreadwings. They are so named because they rest with their wings spread. This species is known commonly as the dusky spreadwing. It is a nomadic damselfly found in India, Southeast Asia as far as New Caledonia, and northern parts of Australia. The adult is a medium-sized damselfly about 40 millimeters long with a wingspan around 45 millimeters. It is dusky-grey on dorsal surfaces graduating to light bluish-green on the sides and beneath. In Australia, the distribution is in suitable habitat in the north-west and north-eastern part of the continent from about Broome to the south-eastern Queensland border. This species can be found in freshwater habitat types such as river lagoons, ponds, and swamps. Its population size is unknown but it has a wide range. Threats to the species have not been assessed. It is listed as a least-concern species on the IUCN Red List. Taxonomy ''Lestes concinnus'' was des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann August Hagen
Hermann August Hagen (30 May 1817 – 9 November 1893) was a German entomologist who specialised in Neuroptera and Odonata. He had established himself as one of Europe's preeminent entomologists by 1867 when he accepted a position at Harvard University to curate the Museum of Comparative Zoology. In 1870 he became the first entomologist in the United States to hold the formal title, Professor of Entomology. Biography Hagen was born 30 May 1817 in Königsberg, Prussia. He was the son of Anna (Linck) Hagen and Carl Heinrich Hagen. His father was a senior government counselor and a professor of political science at the University of Königsberg and his grandfather, Karl Gottfried Hagen, was a professor of chemistry at the same university.Henshaw (1894) Young Hagen graduated from a gymnasium in 1836 and began to study medicine at the University of Königsberg. His course of studies was greatly influenced by his zoology professor, Martin Heinrich Rathke and together they toured maj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |