Filipendula ulmaria
Habitat: Wetland. Fen, marsh and reed beds. Flowers visited include white umbellifers, "Aegopodium podagraria", "Cardamine", "Cistus", "Crataegus", "Euphorbia", "Filipendula ulmaria", "Galium", "Leontodon", "Sorbus aucuparia". Flies May to August. The larvae is aquatic. It has been collected from decaying rhizomes of "Typha".