| Faxonius alluvius | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Family: | Cambaridae |
| Genus: | Faxonius |
| Species: | F. alluvius |
| Binomial name | |
| Faxonius alluvius (Simon and McMurray, 2014) | |
| Synonyms | |
Orconectes alluvius | |
Faxonius alluvius is a species of Cambarid crayfish endemic to the state of Indiana. [1] [2]
The exoskeleton of Faxonius alluvius generally ranges in light brown with occasional areas of darker brown or light olive green. A large, mottled dark brown patch is located on the head, anterior to the areola. Dorsal surfaces of the abdominal segments are colored with wide, mottled, dark-brown markings occupying about half of the width of the abdomen, gradually becoming narrower distally until only represented by a small triangle by the end of the abdomen. Lateral areas of the abdomen are light brown with darker brown markings along the edges. The claws are overall colored a light brown. The fingers of the claws bear orange tips, followed proximally by wide black bands. [2]
Faxonius alluvius is confined to streams within the Crawford Upland and Mitchell Karst Plain of southwestern Indiana. [2]
Faxonius alluvius is a freshwater-dwelling species that occurs in small to medium-sized sandy streams associated with leaf litter and woody debris. [2]
Female Faxonius alluvius are observed carrying young during the winter and spring months. On average, females will carry 170 to 230 of their young at one time. This species' population appears to be composed predominantly of males, with a 1.5:1 male-to-female sex ratio. Juveniles are often found during the early summer months in small flowing streams and ditches associated with slower water velocities, leaf packs, and woody debris. [2]
At time of discovery, Faxonius alluvius was accepted under the title Orconectes alluvius before it was revised into the Faxonius genus. [3]
Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as Procambarus clarkii, are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus.
Cambarus is a large and diverse genus of crayfish from the United States and Canada. The adults range in size from about 5 cm (2.0 in) up to approximately 15 cm (5.9 in).
Cherax, commonly known as yabby/yabbies in Australia, is the most widespread genus of fully aquatic crayfish in the Southern Hemisphere. Various species of cherax may be found in both still and flowing bodies of freshwater across most of Australia and New Guinea. Together with Euastacus, it is also the largest crayfish genus in the Southern Hemisphere.
The Murray crayfish, Euastacus armatus, is a species of freshwater crayfish endemic to Australia that belongs to the family Parastacidae. The Murray crayfish has the largest geographic range of any of the Euastacus crayfish in Australia, being found in the Murray and Murrumbidgee Rivers as well as many of their tributaries. Murray crayfish are also known as "Murray River crayfish", "Murray crays", "freshwater crays", "spiny freshwater crays", "spinies" and in the Wagga Wagga region of southern New South Wales they are simply known as "lobsters".
Galaxias olidus, the mountain galaxias, is a species of freshwater galaxiid fish widely found in southeastern Australia.
The rusty crayfish is a large, aggressive species of freshwater crayfish which is native to the United States, in the Ohio River Basin in parts of Ohio, Kentucky, and Indiana. Its range is rapidly expanding across much of eastern North America, displacing native crayfishes in the process. The rusty crayfish was first captured in Illinois in 1973, and has been collected at over 20 locations in the northern portion of the state. In 2005, F. rusticus was found for the first time west of the Continental Divide, in the John Day River, Oregon, which runs into the Columbia River.
Cambarus fasciatus, the Etowah crayfish, is a species of crayfish in the family Cambaridae. This species is endemic to Georgia, where it is state listed as S2.
The Nashville crayfish, Faxonius shoupi, is a freshwater crustacean native to the Mill Creek Basin in Nashville, Tennessee. Prior to August 2017, the species was called Orconectes shoupi. Faxonius shoupi is protected under the Endangered Species Act (ESA) as an endangered species. However, the crayfish has recently been put up for delisting by the United States Fish and Wildlife Service.
Faxonius limosus, synonym Orconectes limosus, is a species of crayfish in the family Cambaridae. It is native to the east coast of North America, from Quebec to the lower James River, Virginia, but has also been introduced to Europe. It is known commonly as the spinycheek crayfish or Kamberkrebs in German.
Faxonius virilis is a species of crayfish known as the virile crayfish, northern crayfish,eastern crayfish, and lesser known as the lake crayfish or common crawfish. Faxonius virilis was reclassified in August 2017, and the genus was changed from Orconectes to Faxonius. It is native to the central United States, east to tributaries of Lake Erie, Lake Ontario, Lake Champlain and the St. Lawrence River in New York and to much of Canada.
Potamon fluviatile is a freshwater crab found in or near wooded streams, rivers and lakes in Southern Europe. It is an omnivore with broad ecological tolerances, and adults typically reach 50 mm (2 in) in size during their 10–12 year lifespan. They inhabit burrows and are aggressive, apparently outcompeting native crayfish.
Faxonius immunis is a species of crayfish in the family Cambaridae. It is native to North America and it is an introduced species in Europe, where it lives along the Upper Rhine. Its common names include calico crayfish and papershell crayfish.
The eastern swamp crayfish is a species of small freshwater crayfish from coastal New South Wales, Australia. It is distinguished from related species by large genital papilla on the males, large raised postorbital ridges, a laterally compressed carapace, and elongated chelae.
Faxonius maletae, sometimes called the Kisatchie painted crayfish or Kisatchie painted crawfish, is a species of crawdad in the Cambaridae family. The specific epithet maletae is in honor of the discoverer's wife, author Maleta M. Walls, who helped collect many of the original specimens. It was originally described as a subspecies of Orconectes difficilis, but later elevated to full species status. The common name refers to the Kisatchie National Forest, near where the original specimens were found in Bayou Santabarb.
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. immunis, and F. limosus, that are invasive to Europe.
Euastacus bidawalus, the East Gippsland spiny crayfish, is an Australian freshwater crayfish endemic to the East Gippsland area of Victoria and the far south coast of New South Wales.
Euastacus yanga, also known as the variable spiny cray, is a freshwater crayfish endemic to south eastern Australia.
Faxonius lancifer, the shrimp crayfish, is a species of crayfish in the family Cambaridae. It is widespread in the South-Eastern United States.
Faxonius acares, or the redspotted stream crayfish, is a species of freshwater crayfish endemic to the Arkansas River and the Ouachita River of the Ouachita National Forest and Ouachita Mountains, Arkansas.