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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!

Photo by GBC, 26th July 2018, Lake Vyrnwy
Pic shows exuvia in situ

Photo by GBC, 26th July 2018, Lake Vyrnwy
Pic shows exuvia