Davey, P., 2009: First discovered in Huntingdonshire in 1951, and then also in Cambridgeshire, its range expanding during the 1990s; it is now resident in many eastern counties of England, the larva feeding on thistles (Carduus spp. and Cirsium spp.).

In Dorset, the few widely-spread records we have are all post-1996, and likely reflect the westward expansion of this species nationally during the warming trend: Broadcroft Quarry, at MV light on 22 June 2007 (G Hopkins et al), Lodmoor, at... Read More

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