It also has a Donate button if you want to support our work saving butterflies and moths across Europe

Hi Richard - the key diagnostic is found on the upperside hindwing although, based on your photo, I'd suggest that this is L. maera which has a paler underside (and is larger) than L. petropolitana.

Another way of thinking about it is, in the absence of Cotesia glomerata, the numbers of Large White would get out of control and you wouldn't have any cabbage with your Sunday roast 😀 These types of relationships are so important to maintaining a delicate balance! Great photos of the parasitoid!

I believe that the two subspecies can be separated based on appearance - at least, britannicus can be separated from whatever subspecies is found near us in mainland Europe (there's some dispute about this!)

Might be worth rearing it through for more certainty regarding subspecies

I can't find any mention of Fennel being used in the wild by ssp. britannicus, although it will take it in captivity. The location would suggest britannicus and this should be documented (e.g. in Ent. Rec.)

Magpie moth

Nice find! This looks like an intermediate form between helice and the normal form. All abs are listed at www.ukbutterflies.co.uk/aberrations...., but there's no obvious match.

A female Large White :)

Hi William - and congrats! We're keen to ensure that this sighting is recorded in an appropriate entomological journal (such as the Entomologist's Record) so that it can be formally added to the Checklist of the Lepidoptera of the British Isles. Do contact me for more info (peter.eeles@icloud.com).

Yes - Green-veined White

Nearest "known" colonies :)

Thanks for coming along, Nicola, and I look forward to our next meet!

Dark Green Fritillary

That's certainly one of its larval foodplants 😜