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Nartus Grapii
''Nartus grapii '' is a species of beetle in family Dytiscidae, found in the Palearctic. This species was formerly a member of the genus ''Rhantus''.Joy, N 1932 A Practical Handbook of British Beetles ''A Practical Handbook of British Beetles'' is a two-volume work on the British beetle fauna, by Norman H. Joy, first published by H. F. & G. Witherby in January 1932. Contents Volume one (xxviii + 622 pages) consists of the text (largely a ... References Dytiscidae Beetles described in 1808 {{Dytiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Gyllenhaal
Leonard Gyllenhaal (3 December 1752 – 13 May 1840) was a Swedish military officer and entomologist. Born on the Ribbingsberg manor in Västergötland in west Sweden, Leonard Gyllenhaal was son of an army officer and belonged to a family of the lower nobility. He went to school ( Skara trivialskola) in the cathedral town of Skara together with, among others, the future poet Johan Henrik Kellgren, and later renowned naturalists Anders Dahl and the brothers Adam and Johan Afzelius, with whom he went on natural excursions. Like some of his friends, he went to Uppsala to study under Linnaeus in 1769. He never matriculated and remained in Uppsala only one semester, before switching to a military career in accordance with the wishes and traditions of the family, enrolling in the '' Adelsfanan'' ( "Banner of Nobles") cavalry regiment, and a few years later transferring to the drabantkåren (Garde du Corps). Gyllenhaal, however, remained in contact with Linnaeus through an exte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dytiscidae
The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between long, though much variation is seen between species. The European ''Dytiscus latissimus'' and Brazilian ''Megadytes ducalis'' are the largest, reaching up to and respectively. In contrast, the smallest is likely the Australian ''Limbodessus atypicali'' of subterranean waters, which only is about long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palearctic
The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Siberian region; the Mediterranean Basin; the Sahara and Arabian Deserts; and Western, Central and East Asia. The Palaearctic realm also has numerous rivers and lakes, forming several freshwater ecoregions. The term 'Palearctic' was first used in the 19th century, and is still in use as the basis for zoogeographic classification. History In an 1858 paper for the ''Proceedings of the Linnean Society'', British zoologist Philip Sclater first identified six terrestrial zoogeographic realms of the world: Palaearctic, Aethiopian/Afrotropic, Indian/Indomalayan, Australasian, Nearctic, and Neotropical. The six indicated general groupings of fauna, based on shared biogeography and large-scale geographic barriers to migration. Alfred Wallace a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhantus
''Rhantus'' is a genus of beetle in family Dytiscidae. There are about 100 species distributed worldwide. They often live in pools and marshy habitat types.Alarie, Y., et al. (2009)Larval morphology of ''Rhantus'' Dejean, 1833 (Coleoptera: Dytiscidae: Colymbetinae): descriptions of 22 species and phylogenetic considerations.''Zootaxa'', 2317, 1-102. Several species have colonized oceanic islands and become endemics Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ....Hjalmarsson, A. E., et al. 2013Taxonomic revision of Madagascan ''Rhantus'' (Coleoptera, Dytiscidae, Colymbetinae) with an emphasis on Manjakatompo as a conservation priority.''ZooKeys'' 350 21-45. This genus is paraphyletic and will likely be revised, redefined, and split into several groups in future studies. As a res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Practical Handbook Of British Beetles
''A Practical Handbook of British Beetles'' is a two-volume work on the British beetle fauna, by Norman H. Joy, first published by H. F. & G. Witherby in January 1932. Contents Volume one (xxviii + 622 pages) consists of the text (largely a set of identification keys, with brief status notes for each species). Volume two (194 pages) contains 2040 line-drawings of whole beetles and features referred to in the keys (390 of these were taken from Spry and Shuckard's 1840 publication ''The British Coleoptera Delineated'' but the remainder were drawn by Joy). The book covers a fauna of about 3560 different species and has an emphasis on species identification, being "essentially a manual of identification for the use of collectors." A reduced-size reprint was produced by E. W. Classey in 1976, and again in 1997, while Pisces Conservation released an electronic version in 2009, solving a longstanding problem of availability. Reception One of the main points of attraction for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
