List of Saint Helena, Ascension and Tristan da Cunha animals extinct in the Holocene

Source: Wikipedia, the free encyclopedia.

Location of Saint Helena, Ascension and Tristan da Cunha in the South Atlantic Ocean.
The Saint Helena hoopoe (Upupa antaios) became extinct soon after the island was discovered in 1502.

This is a list of Saint Helena, Ascension and Tristan da Cunha animals extinct in the Holocene that covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years before present (about 9700 BCE)[a] and continues to the present day.[1]

Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic. The territory consists of Saint Helena, Ascension Island, and the archipelago of Tristan da Cunha (including Gough Island), all of volcanic origin.

Numerous animal species have disappeared from Saint Helena, Ascension and Tristan da Cunha as part of the ongoing Holocene extinction, driven by human activity.

Birds (class Aves)

Cuckoos (order Cuculiformes)

Cuckoos (family Cuculidae)

Common name Scientific name Range Comments
Saint Helena cuckoo Nannococcyx psix Saint Helena Most recent remains dated to around 1640.
unusually small for a cuckoo, it likely parasited a small forest passerine species that is also extinct now.[3]

Pigeons and doves (order Columbiformes)

Pigeons and doves (family Columbidae)

Common name Scientific name Range Comments
Saint Helena dove Dysmoropelia dekarchiskos Saint Helena Described from
Middle Pleistocene remains, but speculated to have survived until settlement due a 1584 mention of doves in the island. It was the fourth largest pigeon ever (after the dodo, Rodrigues solitaire, and Viti Levu giant pigeon) and likely flightless, which would have made it easy prey of humans or introduced mammals.[3]

Rails and cranes (order Gruiformes)

Rails (family Rallidae)

Common name Scientific name Range Comments Pictures
Saint Helena rail Aphanocrex podarces Saint Helena Most recent remains dated to around 1640.[2]
Tristan moorhen Gallinula nesiotis Tristan da Cunha Last recorded in 1873. Became extinct due to hunting, predation by introduced rats, cats, and pigs, and habitat destruction by fire.[4]
Ascension crake Mundia elpenor Ascension Island Last recorded in 1656. It probably became extinct after the introduction of rats in the 18th century, or cats in 1815.[5]
Saint Helena crake Zapornia astrictocarpus Saint Helena Most recent remains dated to around 1640.[2]

Shorebirds (order Charadriiformes)

Gulls, terns, and skimmers (family Laridae)

Locally extinct
Common name Scientific name Range Comments Pictures
Kelp gull Larus dominicanus Southern Hemisphere coasts Present in Saint Helena before c. 1640. It is unknown if it bred on the island.[2]

Albatrosses and petrels (order Procellariiformes)

Petrels and shearwaters (family Procellariidae)

Common name Scientific name Range Comments
Olson's petrel Bulweria bifax Saint Helena Most recent remains at Sandy Bay dated to around 1640. It was replaced afterwards by Bulwer's petrel.[2]
Saint Helena petrel Pseudobulweria rupinarum Saint Helena Most recent remains at Prosperous Bay dated to around 1640. The species nested on the ground and was vulnerable to predation by cats and other introduced mammals.[2]
Saint Helena shearwater Puffinus pacificoides Saint Helena Known from fossils dated to around 14,000 years ago, but could have survived until the Holocene and become extinct when the climate ameliorated.[2]

Pelicans, herons, and ibises (order Pelecaniformes)

Herons (family Ardeidae)

Common name Scientific name Range Comments
Ascension night heron Nycticorax olsoni Ascension Island Likely the "aponar" (an old name for the
André Thévet in 1555. It was flightless or a poor flyer and nested on the ground, making it vulnerable to hunting and predation by introduced mammals.[3]

Hornbills and hoopoes (order Bucerotiformes)

Hoopoes (family Upupidae)

Common name Scientific name Range Comments Pictures
Saint Helena hoopoe Upupa antaios Saint Helena Most recent remains at Prosperous Bay dated to around 1640. It was flightless or a poor flyer, making it easy prey for introduced cats and rats.[2]

Insects (class Insecta)

Dragonflies and damselflies (order Odonata)

Skimmers, perchers, and relatives (family Libellulidae)

Common name Scientific name Range Comments
Saint Helena darter Sympetrum dilatatum Saint Helena Last collected in 1963. The causes of extinction are unknown, but habitat destruction has been suggested.[6]

Earwigs (order Dermaptera)

Striped earwigs (order Labiduridae)

Common name Scientific name Range Comments Pictures
Saint Helena earwig Labidura herculeana Saint Helena Last collected in 1967. Isolated
mice, spiders, and the centipede Scolopendra morsitans have increased.[7]

Beetles (order Coleoptera)

Ground beetles (family Carabidae)

Scientific name Range Comments Pictures
Aplothorax burchelli Saint Helena Last collected in 1966-1967.[8]

Slugs and snails (class Gastropoda)

Order Stylommatophora

Family Achatinidae

Common name Scientific name Range Comments Pictures
Chilonopsis blofeldi Saint Helena Last seen in the 1870s.[9]
Chilonopsis exulatus Saint Helena Last seen in the 1870s.[10]
Chilonopsis helena Saint Helena Last seen in the 1870s.[11]
Chilonopsis melanoides Saint Helena Last seen in the 1870s.[12]
Great Saint Helena awl snail Chilonopsis nonpareil Saint Helena Described from subfossil shells in 1875. It probably disappeared due to habitat modification caused by introduced goats, pigs, and rabbits, or predation by rats, mice, and the centipede Scolopendra morsitans.[13]
Chilonopsis subplicatus Saint Helena Last seen in the 1870s.[14]
Chilonopsis subtruncatus Saint Helena Last seen in the 1870s.[15]
Chilonopsis turtoni Saint Helena Last seen in the 1870s.[16]

Family Charopidae

Scientific name Range Comments
Helenoconcha leptalea Saint Helena Last seen in the 1870s.[17]
Helenoconcha minutissima Saint Helena Last seen in the 1870s.[18]
Helenoconcha polyodon Saint Helena Last seen in the 1870s.[19]
Helenoconcha pseustes Saint Helena Last seen in the 1870s.[20]
Helenoconcha sexdentata Saint Helena Last seen in the 1870s.[21]
Helenodiscus bilamellata Saint Helena Last seen in the 1870s.[22]
Helenodiscus vernoni Saint Helena Last seen in the 1870s.[23]
Pseudohelenoconcha spurca Saint Helena[24]

Family Pupillidae

Scientific name Range Comments
Pupilla obliquicosta Saint Helena Last seen in the 1870s.[25]

Whorl snails (family Vertiginidae)

Scientific name Range Comments
Campolaemus perexilis Saint Helena Last seen in the 1870s.[26]

Notes

  1. ^ The source gives "11,700 calendar yr b2k (before CE 2000)". But "BP" means "before CE 1950". Therefore, the Holocene began 11,650 BP. Doing the math, that is c. 9700 BCE.

References

  1. (PDF) from the original on 2013-11-04. Retrieved 2022-04-24.
  2. ^ a b c d e f g h Lewis, C. A. (2008). The Late Glacial and Holocene avifauna of the island of St Helena, South Atlantic Ocean. Transactions of the Royal Society of South Africa, 63(2), 128-144.
  3. ^ a b c Hume, J.P. (2017) Extinct Birds. Bloomsbury Publishing, 560 pages.
  4. . Retrieved 13 November 2021.
  5. . Retrieved 18 November 2021.
  6. .
  7. . Retrieved 12 November 2021.
  8. ^ Sota, T., Hori, M., Scholtz, C., Karagyan, G., Liang, H. B., Ikeda, H., & Takami, Y. (2020). The origin of the giant ground beetle Aplothorax burchelli on St Helena Island. Biological Journal of the Linnean Society, 131(1), 50-60.
  9. .
  10. . Retrieved 15 November 2021.
  11. . Retrieved 17 November 2021.
  12. . Retrieved 16 November 2021.
  13. . Retrieved 14 November 2021.
  14. . Retrieved 16 November 2021.
  15. . Retrieved 16 November 2021.
  16. . Retrieved 16 November 2021.
  17. . Retrieved 17 November 2021.
  18. . Retrieved 14 November 2021.
  19. . Retrieved 14 November 2021.
  20. . Retrieved 17 November 2021.
  21. . Retrieved 16 November 2021.
  22. . Retrieved 15 November 2021.
  23. . Retrieved 17 November 2021.
  24. . Retrieved 16 November 2021.
  25. . Retrieved 16 November 2021.
  26. . Retrieved 17 November 2021.