Valvata virens | |
---|---|
the operculum of Valvata virens | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Family: | Valvatidae |
Genus: | Valvata |
Species: | V. virens |
Binomial name | |
Valvata virens Tryon, 1863 | |
Valvata virens is a species of freshwater snail in the family Valvatidae. It is known by the common name emerald valvata. [2]
This species is endemic to California in the United States. Reports from adjacent states are invalid. Of the two valid occurrences reported in California, at least one is extirpated and the other is in an unknown location. NatureServe has listed the species with the conservation status "possibly extinct". [2]
The willow flycatcher is a small insect-eating, neotropical migrant bird of the tyrant flycatcher family native to North America.
The California tiger salamander is a vulnerable amphibian native to California. It is a mole salamander. Previously considered to be a subspecies of the tiger salamander, the California tiger salamander was recently designated a separate species again. The California tiger salamander distinct population segment (DPS) in Sonoma County and the Santa Barbara County DPS are listed as federally endangered, while the Central California DPS is listed as federally threatened. The Sonoma County, south San Joaquin, and the Santa Barbara County DPS have diverged from the rest of the California tiger salamander populations for over one million years, since the Pleistocene and they may warrant status as separate species.
NatureServe, Inc. is a non-profit organization based in Arlington County, Virginia, US, that provides proprietary wildlife conservation-related data, tools, and services to private and government clients, partner organizations, and the public. NatureServe reports being "headquartered in Arlington, Virginia, with regional offices in four U.S. locations and in Canada." In calendar year 2011 they reported having 86 employees, 6 volunteers, and 15 independent officers.
The green lanternshark is a species of dogfish shark in the family Etmopteridae, found in the western central Atlantic Ocean. This species usually occurs on the upper continental slope below a depth of 350 m (1,150 ft). Reaching 26 cm (10 in) in length, the green lanternshark has a slender body with a long, thin tail and low, conical dermal denticles on its flanks. It is dark brown or gray with ventral black coloration, which contain light-emitting photophores that may serve a cryptic and/or social function. Green lanternsharks are thought to be gregarious and may attack their prey, squid and octopus often larger than themselves, in packs. Reproduction is aplacental viviparous, with females giving birth to litters of one to three young. This relatively common shark is an occasional, valueless bycatch of commercial fisheries; currently it does not appear to be significantly threatened by human activities.
Keen's myotis is a species of vesper bat. It is found in British Columbia in Canada and in Washington and Alaska in the United States. It is named after the Rev. John Henry Keen, who collected the specimen that formed the basis for the first scientific description of the species. Classification for Keen's myotis formerly included the northern long-eared myotis, resulting in older studies confusing the species for one another.
Trowbridge's shrew is a species of mammal in the family Soricidae. It is found in southern British Columbia in Canada and in Washington, Oregon, and California in the United States.
Etheostoma osburni, the candy darter or finescale saddled darter, is a species of fish in the family Percidae, a member of the group known as darters. This species is endemic to the eastern United States where it is known only from the Kanawha River system in the states of Virginia and West Virginia.
The Morongo desert snail is a species of land snail in the family Helminthoglyptidae.
The Victorville shoulderband is a species of land snail in the family Helminthoglyptidae.
Ladislavella utahensis, common name the thickshell pondsnail, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails. This species is endemic to Utah Lake in the United States. The last living snails were found in the early 1930s.
The Utah roundmouth snail, also known as the Utah valvata or desert valvata, scientific name Valvata utahensis, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Valvatidae, the valve snails.
Valvata is a genus of very small freshwater snails with an operculum, aquatic gastropod mollusks in the family Valvatidae, the valve snails.
Macrobaenetes kelsoensis is a species of insect in family Rhaphidophoridae known commonly as the Kelso giant sand treader cricket. It is endemic to California, where it is known only from San Bernardino County.
Valvata piscinalis, common name the European stream valvata or European valve snail, is a species of minute freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails. It is also known as Cincinna piscinalis.
Valvata sincera, common name the mossy valvata is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.
Valvata lewisi, common name the fringed valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.
Valvata tricarinata, common name the three-ridge valvata or threeridge valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.
Valvata saulcyi is a species of gastropods belonging to the family Valvatidae. It is found in freshwater habitats of the Levant and Sicily.