Main: (Sesiidae / Sesiinae)
52.005 [B&F: 0376] Welsh Clearwing (Synanthedon scoliaeformis) (Borkhausen, 1789)


A rare Red Data Book species, a species of conservation concern under the UK Biodiversity Action Plan. Restricted to birch woodland in Perthshire and Sutherland; recorded in recent years at Cannock Chase, Staffordshire, and in Sherwood Forest, Nottinghamshire. Not recorded in Hampshire or on the Isle of Wight to date. Wingspan 24-35 mm. Day-flying, the early stages may be sought during the winter months, but synthetic pheromone lures are used to attract males nowadays, and this has led to a marked increase in records of this species in recent years. Larva feeds within bark of Silver Birch and Downy Birch, over-wintering three times.

Flightime guide

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
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