BCE has currently 52 Partners in 39 countries, plus contacts in several more. Many of the partners are from institutions, NGOs dedicated to butterflies or nature, lepidopteran and entomological societies, websites dedicated to regional/national butterflies and more. For this variety of websites, we are listing here all the partner websites per country to facilitate any information you are looking for.
Romanian Lepidopterological Society (RLS)
Society for the Conservation and Study of Lepidoptera in Slovenia