Alignment with Agassiz (2013)

The taxonomy of the butterflies of the British Isles is defined in Checklist of the Lepidoptera of the British Isles; Agassiz (2013). The UK Butterflies website builds on this checklist and any differences are noted on this page.


Agassiz, Beavan & Heckford (2016) correct certain errors in Agassiz (2013). Those changes relevant to UK Butterflies are:

Further errors have been identified which have been accommondated in UK Butterflies and passed on to the relevent body:

Vernacular Names

There are also some changes to the vernacular names used, as follows, in order to conform more closely with recent literature:


The following additions have also been made since they are not specified in Agassiz (2013):


The following items, present in the checklist, have been omitted:

Historic Subspecies and Forms

This link lists the subspecies, forms and unnamed races that have appeared in literature but are not included on UK Butterflies, since they are not included in the latest checklist of Agassiz (2013).