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Cambarus Diupalma
''Cambarus'' is a large and diverse genus of crayfish from the United States and Canada. The adults range in size from about 5 centimeters (2 in) up to approximately 15 centimeters (6 in). Description The genus ''Cambarus'' is the second largest freshwater crayfish genus inhabiting the Northern Hemisphere, with only sixty fewer species than the genus ''Procambarus''. Though ''Cambarus'' are varied across species, the two terminal elements that make up the male form I gonopod form ninety degree angles with the central appendage, allowing for their identification. Unlike the genus ''Procambarus'' whose first pleopod tends to have three processes at the tip, ''Cambarus'' has only one or two. ''Cambarus'' reach 17–26 mm carapace lengths in their first year, while average adult carapace length ranges from 55–62 mm. As a genus containing nearly 100 species, ''Cambarus's'' coloration is variable. ''Cambarus bartonii'' is dark brown, while species like ''Cambar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Ferdinand Erichson
Dr Wilhelm Ferdinand Erichson (26 November 1809 in Stralsund – 18 December 1848 in Berlin) was a trained medical doctor and a German entomologist. He was the author of many articles about insects mainly in ''Archiv für Naturgeschichte''. When writing in Latin, he latinised ''Wilhelm'' to ''Guillelmus'' becoming either ''Guil. F. Erichson'' or ''G.F. Erichson.'' He wrote a paper in 1842 on insect species collected at Woolnorth in Tasmania, Australia, which was the first detailed research published on the biogeography of Australian animals and was very influential in raising scientific interest in Australian fauna. Erichson was the curator of the Coleoptera collections at the ''Museum fur Naturkunde'' in Berlin from 1834 to 1848. Erichson's Scarabaeidae classification is nearly identical to the modern one. Works *''Genera Dytiscorum''. Berlin (1832) *''Die Käfer der Mark Brandenburg''. Two volumes Berlin (1837-1839) Click for pd*''Genera et species Staphylinorum insectorum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambarus Dubius
''Cambarus'' is a large and diverse genus of crayfish from the United States and Canada. The adults range in size from about 5 centimeters (2 in) up to approximately 15 centimeters (6 in). Description The genus ''Cambarus'' is the second largest freshwater crayfish genus inhabiting the Northern Hemisphere, with only sixty fewer species than the genus '' Procambarus''. Though ''Cambarus'' are varied across species, the two terminal elements that make up the male form I gonopod form ninety degree angles with the central appendage, allowing for their identification. Unlike the genus '' Procambarus'' whose first pleopod tends to have three processes at the tip, ''Cambarus'' has only one or two. ''Cambarus'' reach 17–26 mm carapace lengths in their first year, while average adult carapace length ranges from 55–62 mm. As a genus containing nearly 100 species, ''Cambarus's'' coloration is variable. ''Cambarus bartonii'' is dark brown, while species like ''Camb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambarus Aculabrum
''Cambarus aculabrum'' is a rare species of cave-dwelling crayfish known by the common name Benton county cave crayfish.''Cambarus aculabrum''. National Biological Information Infrastructure. It is native to in the United States, where it is known from only four locations. It is a federally listed of the United States.USFWS [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orconectes
''Orconectes'' is a genus of cave dwelling freshwater crayfish, endemic to suitable habitats in the eastern United States. Surface dwelling species, formerly categorised here, were moved to ''Faxonius'' in 2017. Due to their subterranean habitat, they are usually depigmented, often blind, and are long-lived. Ages of 176 years have been claimed for ''O. australis'', though this was reduced to ≤22 years in a 2012 study. Taxonomy The genus ''Orconectes'' was erected in 1872 by Edward Drinker Cope to house ''Astacus pellucidus'' (now ''Orconectes pellucidus'') and his new species, ''Orconectes inermis''. Prior to the 2017 review by Oxford university, the genus contained 85 species in 11 subgenera. The ''Faxonius ''Faxonius'' is a genus of freshwater crayfish in the family Cambaridae. There are more than 90 described species in ''Faxonius''. It includes the rusty crayfish, an invasive species in North America, and three species, ''F. virilis'', ''F. immu ...'' subgenus was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambarus Robustus
''Cambarus robustus'', known generally as the robust crayfish or Big Water crayfish, is a species of crayfish Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mu ... in the family Cambaridae. It is found in North America. The IUCN conservation status of ''Cambarus robustus'' is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2010. References Further reading * * * External links * Cambaridae Articles created by Qbugbot Crustaceans described in 1852 Freshwater crustaceans of North America {{Crayfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adult
An adult is a human or other animal that has reached full growth. In human context, the term ''adult'' has meanings associated with social and legal concepts. In contrast to a " minor", a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient, and responsible. They may also be regarded as a "major". The typical age of attaining legal adulthood is 18, although definition may vary by legal rights, country, and psychological development. Human adulthood encompasses psychological adult development. Definitions of adulthood are often inconsistent and contradictory; a person may be biologically an adult, and have adult behavior, but still be treated as a child if they are under the legal age of majority. Conversely, one may legally be an adult but possess none of the maturity and responsibility that may define an adult character. In different cultures there are events that relate passing from being a child to becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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