| Streptocephalus guzmani | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Branchiopoda |
| Order: | Anostraca |
| Family: | Streptocephalidae |
| Genus: | Streptocephalus |
| Species: | S. guzmani |
| Binomial name | |
| Streptocephalus guzmani Maeda-Martínez, Belk, Obregón-Barboza & Dumont, 1995 | |
Streptocephalus guzmani is a species of crustacean in the family Streptocephalidae. It is endemic to Mexico.
Anostraca is one of the four orders of crustaceans in the class Branchiopoda; its members are referred to as fairy shrimp. They live in vernal pools and hypersaline lakes across the world, and they have even been found in deserts, ice-covered mountain lakes, and Antarctic ice. They are usually 6–25 mm (0.24–0.98 in) long. Most species have 20 body segments, bearing 11 pairs of leaf-like phyllopodia, and the body lacks a carapace. They swim "upside-down" and feed by filtering organic particles from the water or by scraping algae from surfaces, with the exception of Branchinecta gigas, or "giant fairy shrimp", which is itself a predator of other species of anostracans. They are an important food for many birds and fish, and some are cultured and harvested for use as fish food. There are 300 species spread across 8 families.
A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as only consisting of living members kept in captivity or as a naturalized population outside its historic range. Classification requires exhaustive surveys conducted within the species' known habitat with consideration given to seasonality, time of day, and life cycle. Once a species is classified as EW, the only way for it to be downgraded is through reintroduction.
The Somali hedgehog is a species of mammal in the family Erinaceidae. It is endemic to Somalia and Somaliland. The Somali hedgehog is nocturnal.
The pale gray shrew is a species of mammal in the family Soricidae. It is endemic to Pakistan and is distributed in the Shigar valley and the western edge of Deosai.
Speleoperipatus is a monospecific genus of velvet worm in the Peripatidae family, containing the single species Speleoperipatus spelaeus. This species is a pale greenish yellow, almost white, with 22 or 23 pairs of legs and no eyes. Specimens range from 27 mm to 34 mm in length. The minimum number of leg pairs found in this species (22) is also the minimum number found in the neotropical Peripatidae. This velvet worm is viviparous, with mothers supplying nourishment to their embryos through a placenta.
Branchinella alachua is a species of crustacean in the family Thamnocephalidae. It was described in 1953 by Ralph W. Dexter based on material collected in 1947 by I. J. Cantrall; 11 male individuals of the new species were discovered among Cantrall's collection of Streptocephalus seali. B. alachua is only known from the type locality, a temporary pool in Alachua County, Florida, from which its specific epithet derives. It is listed as an endangered species on the IUCN Red List.
Streptocephalus dendrophorus is a species of crustacean in the family Streptocephalidae. It is endemic to South Africa.
Streptocephalus is a genus of fairy shrimp found in temporary waters in Africa, Australia, Eurasia, and Central and North America, following its ancient origin in Gondwana. It contains the following species:
Streptocephalus dendyi is a species of crustacean in the family Streptocephalidae. It is endemic to South Africa.
Streptocephalus gracilis is a species of crustacean in family Streptocephalidae. It is endemic to South Africa.
Streptocephalus kargesi is a species of crustacean in the family Streptocephalidae. It is endemic to Mexico.
Streptocephalus moorei is a species of crustacean in the family Streptocephalidae. It is endemic to Mexico.
Streptocephalus woottoni, with the common name Riverside fairy shrimp, is a rare species of crustacean in the family Streptocephalidae. It is native to Southern California in the United States, and northern Baja California in northwest Mexico.
A vulnerable species is a species which has been categorized by the International Union for Conservation of Nature as being threatened with extinction unless the circumstances that are threatening its survival and reproduction improve.
Streptocephalus sirindhornae is a species of crustacean in the family Streptocephalidae; a genus of freshwater dwelling shrimp belonging to the Anostraca order of Branchiopoda. It is endemic to Thailand, and it was named after Princess Sirindhorn.
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