Parides hahneli, the Hahnel's Amazonian swallowtail, is a species of butterfly in the family Papilionidae. It is endemic to Brazil in the states of Rondônia, Mato Grosso, Amazonas and Pará, where it was placed on the list of endangered species in 2008.
The quadrate pebblesnail, scientific name Somatogyrus quadratus, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species is endemic to Alabama in the United States. Its natural habitat is rivers. This species is possibly extinct because there is no recent survey information. It is known to have had a very restricted distribution and there had been a habitat disturbance. This species was endemic to the Tennessee River system and was known to exist from Muscle Shoals and adjacent Shoal Creek, Lauderdale County, Alabama. It has not been reported since the river was impounded. Based on the fact that the species has not been observed since the dams were constructed, it is widely believed that that change in habitat possibly caused the species's extinction.
Mahatha is a genus of freshwater crabs endemic to Sri Lanka. Four of the six species are critically endangered due to habitat loss, and two are listed as Least Concern on the IUCN Red List.
Perbrinckia cracens is a species of crab in the family Gecarcinucidae.
Perbrinckia is a genus of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka, named after Per Brinck. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and rivers. It contains 14 species, most of which are included on the IUCN Red List as critically endangered species (CR) or vulnerable species (VU) because they are threatened by habitat loss; only one species is of least concern (LC).
Perbrinckia enodis is a species of crab in the family Gecarcinucidae.
Perbrinckia fido is a species of crab in the family Gecarcinucidae.
Perbrinckia morayensis is a species of crab in the family Gecarcinucidae.
Perbrinckia punctata is a species of crab in the family Gecarcinucidae.
Perbrinckia rosae is a species of crab in the family Gecarcinucidae.
Epinephelus ongus, the white-streaked grouper, specklefin grouper, lace-finned rock-cod, specklefin rockcod, wavy-lined tock-cod, white-speckled grouper or white-spotted rock-cod, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It has a wide Indo-Pacific distribution and it is found in brackish waters as well as marine reefs.
Perbrinckia fenestra is a species of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka. the species is categorized as vulnerable by founders due to their single locality where tourist destinations are abundant. The site is Batatotalena Cave in Kuruwita. It is rarely found, and known to live under moist rocks, near water sources and under wet litter.
Perbrinckia gabadagei is a species of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka. The species was once categorized as vulnerable by founders, but now considered to be critically endangered and probably extinct due to lack of recent evidences since 1996. The species first found from Adam's Peak area. It is very rarely found, and known to live under moist soil, and near water sources.
Perbrinckia glabra is a species of freshwater crab of the family Gecarcinucidae that is endemic to Sri Lanka. The species is categorized as critically endangered by the IUCN Red List due to their single locality in Horton Plains National Park. Perbrinckia glabra is found primarily under rocks and boulders near shallow streams. Major threats to this species include habitat loss and pollution.
Perbrinckia integra is a species of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka. The species is categorized as vulnerable by founders due to habitat destruction and human interference. The species is found around Adam's Peak area only. It is found, and known to live under moist rocks, and near water sources.
Perbrinckia scitula is a species of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka. the species is categorized as critically endangered by founders due to their two localities where not protected by law. Very small number can be found among human habitations. The species distributed along Mahaweli River basin, around Deltota and Talawakelle areas.
The Sri Lanka tree crab,, is a species of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka. It is the only known tree climbing freshwater crab found in the country. The crab is discovered from 11 localities from Sri Lanka throughout Kalu River, Walawe River and Gin River basins. Adult are known to survive well in rainwater-filled tree hollows of trees such as Shorea sp., Artocarpus sp., Dillenia sp., Garcinia sp., Myristica sp., and Gyrinops walla. Females with youngs can be seen during February and March on the ground, never within tree hollows. The known predators are Greater coucal, White-throated kingfisher, Sri Lanka grey hornbill and Eurasian otter.
