Chaves’ Ground Beetle (Bradycellus chavesi)

This species was described in 1919 based on a single female specimen that was collected on the island of São Miguel in the Azores.

Chaves’ Ground Beetle appears to have had very reduced hindwings and thus was apparently flightless.

The species was never found again since its description and is considered extinct. [1][2]

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References:

[1] Sofia Terzopulou; François Rigal; Robert J. Whittaker; Paulo A. V. Borges; Kostas A. Triantis: Drivers of Extinction: the case of Azorean beetles. Biological Letters 11(6): 1-32. 2015
[2] Paulo Alexandre Vieira Borges; Lucas Lamelas-López; Isabel R. Amorim; Anja Danielczak; Rui Nunes; Artur R.M. Serrano; Mário Boieiro; Carla Rego; Axel Hochkirch; Virgílio Vieira: Conservation status of the forest beetles (Insecta: Coleoptera) from the Azores, Portugal. Biodiversity Data Journal 5: e14557. 2017

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edited: 04.12.2018