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Long-toed Water Beetle
Dryopidae is a family of beetles, commonly named long-toed water beetles, in the superfamily Byrrhoidea. It was described by Gustaf Johan Billberg in 1820. Description Long-toed water beetles are named for their extended claws. Adults have dense hairs, which allow the beetles to breathe while underwater. The flight muscles of the females weaken as they age. When the pupae complete the imago stage of their life cycle, they move towards running water, and may be attracted to lights. Despite being referred to as aquatic insects, the beetles are unable to swim, clinging to detritus that float. All long-toed water beetles feed on plants that are in the water, but the larvae generally are terrestrial, and at least some also feed on plant matter. ''Stygoparnus'' is the only genus in the family in which both the larvae and adults are aquatic. Genera of the family closely resemble riffle beetles, but the antennae are different from the long-toed water beetles, looking similar to clu ...
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Gustaf Johan Billberg
Gustaf Johan Billberg (14 June 1772, Karlskrona – 26 November 1844, Stockholm) was a Swedish botanist, zoologist and anatomist, although professionally and by training he was a lawyer and used science and biology as an avocation. The plant genus ''Billbergia'' was named for him by Carl Peter Thunberg. Biography In 1790 he earned his legal degree at the University of Lund, later working as an auditor at the audit chamber in Stockholm from 1793. In 1798 he became a member of the county administrative board (''landskamrerare'') in Visby. In 1808 he returned to Stockholm, where from 1812 to 1837, he served as a member of the administrative court (''kammarrättsråd''). He was promoted in 1824 to head the ministry of the Board of Customs (''generaltullstyrelsen''). In 1812, he purchased the right of publishing to the precious work of ''Svensk Botanik'' from the estate of Johan Wilhelm Palmstruch. He subsequently prepared two parts for publication during 1812–1819. He was elected m ...
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Michael S
Michael may refer to: People * Michael (given name), a given name * Michael (surname), including a list of people with the surname Michael Given name "Michael" * Michael (archangel), ''first'' of God's archangels in the Jewish, Christian and Islamic religions * Michael (bishop elect), English 13th-century Bishop of Hereford elect * Michael (Khoroshy) (1885–1977), cleric of the Ukrainian Orthodox Church of Canada * Michael Donnellan (1915–1985), Irish-born London fashion designer, often referred to simply as "Michael" * Michael (footballer, born 1982), Brazilian footballer * Michael (footballer, born 1983), Brazilian footballer * Michael (footballer, born 1993), Brazilian footballer * Michael (footballer, born February 1996), Brazilian footballer * Michael (footballer, born March 1996), Brazilian footballer * Michael (footballer, born 1999), Brazilian footballer Rulers =Byzantine emperors= *Michael I Rangabe (d. 844), married the daughter of Emperor Nikephoros I * Mi ...
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Helichus
Beetles of the genus ''Helichus'' are found worldwide apart from in Australia and Antarctica. Adults reach long and live in aquatic or riparian environments. The larvae are land-dwelling which may be unique in water living insects. Species These 12 species belong to the genus ''Helichus'': * '' Helichus basalis'' LeConte, 1852 * '' Helichus bollowi'' Hinton, 1936 * '' Helichus fastigatus'' * '' Helichus fastigiatus'' (Say, 1824) * '' Helichus frater'' Hinton, 1939 * '' Helichus lithophilus'' (Germar, 1824) * '' Helichus puncticollis'' Sharp, 1882 * '' Helichus pusillus'' Hinton, 1939 * '' Helichus striatus'' Leconte, 1852 * '' Helichus substriatus'' (Müller, 1806) * '' Helichus suturalis'' Leconte, 1852 * '' Helichus triangularis'' Musgrave, 1935 i c g Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net References External links * Byrrhoidea genera Dryopidae {{Dryopidae-stub ...
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Dryops (genus)
Suborder Adephaga Note: the family Carabidae (ground beetles), is also part of this suborder; a list of these is at List of ground beetle (Carabidae) species recorded in Britain. Family Gyrinidae * '' Gyrinus aeratus'' * '' Gyrinus caspius'' * '' Gyrinus distinctus'' * '' Gyrinus marinus'' * '' Gyrinus minutus'' * ''Gyrinus natator'' * '' Gyrinus opacus'' * '' Gyrinus paykulli'' * ''Gyrinus substriatus'' * '' Gyrinus suffriani'' * '' Gyrinus urinator'' * '' Orectochilus villosus'' — hairy whirligig beetle Family Haliplidae * '' Brychius elevatus'' * '' Peltodytes caesus'' * '' Haliplus confinis'' * '' Haliplus obliquus'' * '' Haliplus varius'' * '' Haliplus lineatocollis'' * '' Haliplus apicalis'' * '' Haliplus fluviatilis'' * '' Haliplus furcatus'' * '' Haliplus heydeni'' * '' Haliplus immaculatus'' * '' Haliplus lineolatus'' * '' Haliplus ruficollis'' * '' Haliplus sibiricus'' * '' Haliplus flavicollis'' * '' Haliplus fulvus'' * '' Haliplus laminatus'' * '' Haliplus mucrona ...
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