| Leucocythere helenae | |
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| Species: | L. helenae |
| Binomial name | |
| Leucocythere helenae Martens, 1991 | |
Leucocythere helenae is a species of crustacean in the family Limnocytheridae. It is endemic to South Africa.
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Anaspididae is a family of freshwater crustacean that is endemic to Tasmania, Australia. The family contains 3 genera and 5 species. This group of crustaceans are considered living fossils. They are commonly and collectively known as the Tasmanian anaspid crustaceans. Anaspidids have stalked eyes, long antennae and antennules, and a slender body with no carapace. The two species of Allanaspides and the single species of Paranaspides are all listed as vulnerable on the IUCN Red List.
The black-crested coquette is a species of hummingbird in the family Trochilidae. It is found in Belize, Costa Rica, Guatemala, Honduras, Mexico, and Nicaragua. Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, and heavily degraded former forest.
Vitreorana helenae is a species of frog in the family Centrolenidae. Two common names are sometimes used to refer to this species: Venezuelan glass frog and Helena's glass frog. In Spanish, it is locally known as ranita de cristal de Helena.
The short-crested monarch is a species of bird in the family Monarchidae. It is endemic to the Philippines. It is found in tropical moist lowland forest. It is threatened by habitat loss.
The Drysdale hardyhead is a species of fish in the family Atherinidae endemic to the Drysdale River in the Kimberley region of Australia. It is listed as near threatened on the IUCN Red List and rare under the Australian EPBC Act 1999. The specific name honours Ivantsoff's wife, Helena.
Allocrangonyx is a genus of troglobitic amphipod crustaceans from the South Central United States. The two species are both listed as vulnerable on the IUCN Red List. The animals are blind and unpigmented. During the male's development, the outer ramus of the third uropod differentiates into secondary segments and grows to a length greater than the animal's body length.
Branchinecta is a genus of crustacean in family Branchinectidae. It includes around 50 species, found on all continents except Africa and Australia. Branchinecta gigas, the giant fairy shrimp, is the largest species in the order, with a length of up to 10 centimetres (4 in), and Branchinecta brushi lives at the highest altitude of any crustacean, at 5,930 metres (19,460 ft), a record it shares with the copepod Boeckella palustris. A new genus, Archaebranchinecta was established in 2011 for two species previously placed in Branchinecta.
Mexilana saluposi is a species of crustacean in the family Cirolanidae, the only species in the genus Mexilana. It is endemic to Mexico.
Mexistenasellus is a genus of isopod crustaceans in the family Stenasellidae. It contains 6 species, of which 4 are listed as endangered or vulnerable on the IUCN Red List.
Onchotelson is a genus of isopod crustaceans in the family Phreatoicidae, which is endemic to Tasmania. It contains two species, both of which are listed as vulnerable on the IUCN Red List:
Sphaerolana is a genus of isopod crustaceans in the family Cirolanidae, all of which are endemic to Mexico. The genus Sphaerolana contains the following species: All three species are on the IUCN Red List as either vulnerable species (VU) or endangered species (EN).
Stygobromus is a genus of amphipod crustaceans that live in subterranean habitats. As well as a large number of species in North America, a smaller number of species are also known from Eurasia. Most of the North American species live in areas which were not covered by the Laurentide Ice Sheet, although a few species seem to have survived under the ice. A number of species are on the IUCN Red List as endangered species (EN) or vulnerable species (VU); all the listed species are endemic to the United States. One species, S. lucifugus, is extinct. Stygobromus includes the following species:
Thermosphaeroma is a genus of crustacean in family Sphaeromatidae. They occur exclusively in hot springs of southwestern United States and central Mexico.
Aloe helenae is a species of plant in the genus Aloe. It is endemic to Madagascar.
Eleoniscus is a genus of the small terrestrial crustaceans known as woodlice. It includes one species, Eleoniscus helenae, which is endemic to Alicante province, Spain, where it is known from two caves. It may have been extirpated from one of the two caves through the increasing urbanisation of the Macizo de Montgó.
Clinus helenae, the Helen's klipfish, is a species of clinid that occurs in subtropical waters of the Atlantic Ocean around South Africa where it is a denizen of tide pools. This species can reach a maximum length of 10 centimetres (3.9 in) TL. The identity of the person honoured in the matronym in this species' specific name is thought to be J.L.B. Smith's mother-in-law Helen Evelyn Zondagh (1877-1951).
Ceratobregma helenae, known commonly as the Helen's triplefin, is a species of triplefin blenny. It has an Indo-Pacific distribution from Christmas Island to Samoa, north to Taiwan and south to south eastern Australia. The species is named after Wouter Holleman's wife, Helen.
Codringtonia helenae is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Helicidae, the typical snails.
Chlorocypha helenae is a species of jewel damselfly in the family Chlorocyphidae.
Microgecko helenae, also known commonly as the banded dwarf gecko, Helen's banded dwarf gecko, Helen's tiny gecko, the Khuristan dwarf gecko, or the Khuzestan dwarf gecko, is a species of lizard in the family Gekkonidae. The species is endemic to western Iran.
