Topic: Common Earwig (Forficula auricularia or F.dentata) ?


It seems that recent research has placed doubt upon the existence of Forficula auricularia in the UK - can you make any comment ref. current F.auricularia data ??

1) González-Miguéns et al. (2020) – the paper where the complex was established
https://www.researchgate.net/publicatio … tic_region

2) Curtiss et al. 2023
https://rex.libraries.wsu.edu/esploro/o … sage=false

3) recognised by Dermaptera Species File, the basis for the data on iNaturalist

The distribution border between F. auricularia and F. dentata in Europe remains unknown, but more phylogenetic researches that are yet unpublished suggest it goes from Denmark over western Germany to central and southeastern France. So the British Isles and the Benelux-states are dentata-region, sadly on iNaturalist people tend to ID F. auricularia s. stricto everywhere since many don't know about the complex and are too hasty to compare the two possible F. auricularia taxa on iNat

For America, F. auricularia seems to be present only in eastern North America, the rest is dentata-region
Australia and New Zealand are also dentata-region, which is logical, since many settlers came from the British Isles
so another paper, before the re-establishment of F. dentata as a species is here, it's just a genetic lineage in this one.

4) https://link.springer.com/article/10.10 … 017-1646-3


Steve J. McWilliam


Re: Common Earwig (Forficula auricularia or F.dentata) ?

Any comments Chris ??

Bump !

Steve J. McWilliam