Blastobasis adustella
41.002 BF873  – Common Masoner  – Blastobasis adustella  – (Walsingham, 1894)
Adult Micro:  CAT 2 – Can be confused with other species –      
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Blue –  Generally Common / Widespread    
Taxonomy:   Micro   >>  Blastobasidae
Other Name/s: Dingy Dowd, Blastobasis lignea
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
ID pointers: Cream to buff elongated forewing. Often rolled up. Has a distinct X mark at about half way down the wing and a V mark at the basal area. Some ad-hoc flecking of darker spots. Variable with some dark forms
Distribution:  A moth that was introduced into Britain and is now well spread across the country. A common species that is widespread across most areas of the VC57 recording area.
General Comment: None
Flight Period: July /  August /  September –  On the wing July – September Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –   Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 13-20mm
Food Plant: Decaying vegetable matter.
Specific Recorded History Dates for Common [Blue code Blue-coded] moths is not displayed/updated in this tab. However, all verified records for this moth are listed in the RECORDS tab below.

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