|
Dryopidae
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byrrhoidea
Byrrhoidea is a superfamily of beetles belonging to Elateriformia that includes several families which are either aquatic or associated with a semi-aquatic habitat. Other than the superfamily Hydrophiloidea, most of the remaining Polyphagan beetles which are aquatic are in this superfamily. Description Adults of many Byrrhoidea have exocone eyes (with expanded corneal lens). The anterior edge of the scutellar shield is often abruptly elevated (except in Psephenidae and Cneoglossidae). A variety of byrrhoids have the first three abdominal ventrites solidly fused together. Larvae of most Limnichiidae have one pair of anal hooks on the tenth abdominal segment, while Cneoglossidae and Ptilodactylidae have three or more hooks on each side of this segment. Larvae of Lutrochidae and Elmidae, as well as the limnichiid genus ''Hyphalus'', have anal gill tufts. Almost all byrrhoid larvae have anterior abdominal spiracles that are biforous (or bilabiate) in shape. The degree of wing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stygoparnus
''Stygoparnus'' is a monotypic genus''Stygoparnus''. BugGuide.net of containing the single species ''Stygoparnus comalensis'', which is known by the common name Comal Springs dryopid beetle. This rare beetle is to in the United States, where it is known from two springs. It is a federally listed |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresh Water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
