USA - Species Extinction

Illustration from 1902. Rocky Mountain locusts belong to the suborder of Caelifera, which includes short-horned grasshoppers. (© Julius Bien (1826-1909) biography, Public domain, via Wikimedia Commons)

2024-09-20 Doreen Fräßdorf

Rocky Mountain Locust

Record: A swarm of 12.5 trillion locusts The correct biological term for animals that form large groups is “swarm,” but when it comes to large assemblies of migratory locusts, the term “plague” is used because they not only migrate but also devastate entire regions. Migratory locusts differ from ordinary grasshoppers

Key Largo tree cactus Pilosocereus millspaughii

The Key Largo tree cactus is now considered extinct in the United States. Small populations of this very rare plant species still exist in the Bahamas, Haiti, Cuba, and the Turks and Caicos Islands. (© Luke Padon, CC BY 4.0, via Wikimedia Commons)

2024-07-12 Doreen Fräßdorf

Loss in the USA: Key Largo Tree Cactus Eradicated by Climate Change

Scientists have documented the first local extinction of a species caused by climate change and the associated rise in sea levels. The up-to-seven-meter-tall Key Largo tree cactus (Pilosocereus millspaughii), which was found only in the Florida Keys in the USA, has disappeared. The rare tree-like cactus species has gone extinct

Chestnut casebearer moth (Coleophora leucochrysella)

A photo of the chestnut casebearer moth, published on iNaturalist in June 2020, shows that this species is not extinct as previously believed. Scientists had thought that the insect from the casebearer moth family had disappeared between 1904 and 1950. (© Steven Whitebread, CC BY 4.0, via Wikimedia Commons)

2024-06-21 Doreen Fräßdorf

Chestnut casebearer moth

Chestnut blight from East Asia devastated more than just the American chestnut The American chestnut casebearer moth relied on the native American chestnut (Castanea dentata) for survival. This hardwood tree was the sole host plant for its larvae, ultimately leading to the highly specialized moth species’ downfall. Once one of

The Ula-ai-hawane in the book Birds of the Sandwich Islands (1890-1899) by F. W. Frohawk. (© Frederick William Frohawk, Public domain, via Wikimedia Commons)

2024-06-10 Doreen Fräßdorf

Ula-ai-hawane

The Hawaiian Islands once hosted 57 species of honeycreepers Honeycreepers (Drepanidini), a tribe within the finch family (Fringillidae), are found only on the Hawaiian Island chain. Honeycreepers are closely related as sister species to the rosefinches (Carpodacus), yet many species have developed characteristics that differ from those of finches. Honeycreepers

The extinct yellow-tipped Oahu tree snail Achatinella apexfulva (above) at the Naturalis Biodiversity Center in Leiden, Netherlands. The species epithet apexfulva means “yellow tip” and refers to the color of the snail shell. (© Naturalis Biodiversity Center, CC0, via Wikimedia Commons)

2024-06-10 Doreen Fräßdorf

Yellow-tipped Oahu tree snail

Hawaii’s first scientifically described snail The yellow-tipped Oahu tree snail Achatinella apexfulva is not only the first scientifically described snail of the Hawaiian archipelago but also the first officially declared extinct. The species was first described in 1789 by British sailor and explorer George Dixon, who acquired a traditional necklace

This is what remains of the holotype of the Ainsworth's salamander. The specimen is kept in the Museum of Comparative Zoology at Harvard University in Cambridge, Massachusetts, USA. (© DesmognathusFuscus, via Wikimedia Commons)

2024-06-10 Doreen Fräßdorf

Ainsworth’s salamander

Last seen in 1964: Plethodon ainsworthi, sp. nov. Ainsworth’s salamander is known only from two specimens collected by biologist Jackson Harold Ainsworth in 1964, two miles south of Bay Springs in Jasper County, Mississippi. Ainsworth initially assumed that these individuals were Northern slimy salamanders (Plethodon glutinosus). However, more than 30