May Highflyer - Hydriomena impluviata


Wingspan 30 to 34 mm. Quite variable across its range, the northern populations often include a number of dark grey, melanic specimens.

Identification difficulty

Damper areas where Alder is present.

When to see it

Flies from late April to July.

Life History

Alder (Alnus glutinosa) is the larval foodplant, the caterpillars spinning together the leaves during the autumn.

UK Status

It is found throughout most of Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

VC55 Status

Fairly frequent but not common in Leicestershire and Rutland. L&R Moth Group status = B (scarce resident or restricted distribution or regular migrant).

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map