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376 ~ Welsh Clearwing ~ Synanthedon scoliaeformis
UK Status

Resident. RDB N,WC.

Montgomeryshire Status

A rare 'Red Data Book' species found only in the western half of the county. This species was thought to be only found nationally from a single area in north Wales and from a few sites in Scotland, but in recent years further colonies have been discovered in central southern England.

Wingspan :
  M & F, 27-38mm.

Confusion species

White-barred Clearwing.
Flight time (Montgomeryshire)

Habitat

Open birch woodland on hillsides of wet acidic pasture.

Foodplant

Downy birch.

Lifestage data

Overwinters as larva for > 1 year, but  exact duration unknown. Feeds on the inner bark of old trees where it later pupates.
map
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Montgomeryshire photos

Photo by ANG/JEG, July 2007, Lake Vyrnwy

Photo by MDH, 8th July 2010, Lake Vyrnwy
Pic shows pheromone lure in action!