MAY: Black-Veined White Butterfly PUPAE

The Black-Veined White (Aporia crataegi) is a striking butterfly native to much of Europe. Around a century ago, this species became extinct in the British Isles when it disappeared from its last stronghold in the south-east of England. In the summer of 2023, many individuals of this species were documented in England, so it is possible they are now breeding here again (though this must be the result of deliberate introduction). A successful reintroduction was also reported in Fife but only continued so long as larvae were protected from bird predation. It is unclear why this species had previously declined in the UK, as its host plants (Blackthorn and Hawthorn) are found throughout the country, but it is likely that pesticide use in agriculture and domestic gardens has played a significant role. Eggs are laid in clusters, with caterpillars living within a silk web constructed over the stem they are feeding on. Rearing caterpillars is very straightforward.