On Wild Carrot Daucus carotta in our vegetable garden October 2016.
On the roadside above the Claise near Chaumussay, on Wild Parsnip Pastinaca sativa, September 2013.
In our garden on Wild Carrot, September 2014.
On French Hog's-fennel Peucedanum gallica, on a forest ride near Luzé, September 2012.
On Wild Carrot in our orchard, September 2015.
Caterpillars of the Eurasian Swallowtail Papilio machaon (Fr. Machaon) can be observed on their food plants in September. They are busy fattening themselves up before winter, which they will spend as chrysalises, having wrapped themselves up before the cold weather hits.
They will leave their food plant and move to a sturdy upright stem where they will attach themselves and make a chrysalis. Depending on the surrounding vegetation the chrysalis could be green or brown, to blend in.