Swallow Prominent (Pheosia tremula) | Species | ||||||||||||||||||||
 Taken at Aston, Oxon., on August 1st 2022. (© David Hastings) (1/400th sec at f11) DescriptionFamily: Notodontidae (ABH : 71.017) Wing span: 44 - 52mm This species is very similar to the Lesser Swallow Prominent, although slightly larger. The fore-wing has a greyish-white wedge extending from the trailing corner and reaching at least half-way to the wing base. On the Lesser Swallow Prominent this wedge is clean white and shorter. It is well distributed and frequent in most of the British Isles. It can be found wherever the larval foodplants grow. There are two generations, late April to June, and August. There is usually one brood in far northern and upland Britain from June to August. It over-winters as a pupa underground. Larvae feed on Aspen, other poplars, willows and sallows. It comes to light. Earliest UK sighting: 30th July ; Latest UK sighting: 17th August Sightings
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