Species Details

ABH: 41.003

BF: 874

Family: Blastobasidae

Taxon: Blastobasis lacticolella

=Blastobasis decolorella

Authority: Rebel, 1940

Vernacular: Large Pale Masoner

Account: Common in hedgerows, woodland and gardens throughout much of Britain. Originally a native of Madeira, now fully naturalised, but how it reached Britain remains a mystery (MBGBI Vol 4 part 1) Larva feeds on various mosses, dead insects, detritus, decaying vegetable matter, also on seedpods of Tree Lupin and Tansy.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 13 — 22 mm

Surrey Flight Period: 21 May (2011) — 16 Nov (2025)

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant:

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Common

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 2 — Care needed to identify, an image may be required 🤔
Further Information: https://www.ukmoths.org.uk/species/blastobasis-lacticolella/
Statistics

* Based on adult records only.

Records: 180

Individuals: 66

Earliest Year: 1994

Latest Year: 2025

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