Some online guides are mentioned here, though not easy to find.) https://forum.inaturalist.org/t/current-or-general-favorite-field-guides/656
Not quite guide, but more of a very helpful list (with some easy keys http://insectamo.ru/rhop/38-rhop/opredelitel-vidov-bulavousykh-babochek/37-opredelitel-belyanok), easy to navigate, on Russian, but almost everything is Latin anyway http://insectamo.ru/
Key that shows what kind of keys we need these days, but nothing website-wise: https://quelestcetanimal-lagalerie.com/wp-content/uploads/2017/01/Ichneumonidae_subfamily_key.pdf
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