41.002 Blastobasis adustella (Common Masoner)
ws: 13-19mm; Jul-Sep; most abundant in Yew woodland but common throughout UK.
Synonym: Blastobasis lignea (MBGBI
Synonym: Blastobasis lignea (MBGBI
Blastobasis adustella §2
ID: See B.adustella vs B.lacticolella for more detail
Very variable but individuals with heavy fuscous irroration should be B.adustella, while pale individuals with an indistinct dorsal strigula should be B.lacticolella (especially when fw>9.0mm)
Male genitalia: Uncus broadest subapically
Female genitalia: Ratio of length of posterior apophysis to anterior apophysis 2.0 to 2.2
Very variable but individuals with heavy fuscous irroration should be B.adustella, while pale individuals with an indistinct dorsal strigula should be B.lacticolella (especially when fw>9.0mm)
Male genitalia: Uncus broadest subapically
Female genitalia: Ratio of length of posterior apophysis to anterior apophysis 2.0 to 2.2
§1 Removed
§2 Eskdale, Cumbria; 18/08/2007; fw 7.4mm
§3 Eskdale, Cumbria; 20/08/2007; fw 8.0mm
§4 Eskdale, Cumbria; 20/08/2007; fw 7.0mm
§5 Compton Bishop, Somerset; 24/08/2014; female; fw 8.3mm
§6 ???
§7 Dungeness, Kent; 12/07/2018; male; fw 7.0mm
§8 Westleton, Suffolk; 03/09/2020; female; fw 7.5mm
All images © Chris Lewis
§2 Eskdale, Cumbria; 18/08/2007; fw 7.4mm
§3 Eskdale, Cumbria; 20/08/2007; fw 8.0mm
§4 Eskdale, Cumbria; 20/08/2007; fw 7.0mm
§5 Compton Bishop, Somerset; 24/08/2014; female; fw 8.3mm
§6 ???
§7 Dungeness, Kent; 12/07/2018; male; fw 7.0mm
§8 Westleton, Suffolk; 03/09/2020; female; fw 7.5mm
All images © Chris Lewis
Text amended 08/04/2014 (§1-4) | §5 and female genital distinction from B.lacticolella added 23/11/2014 | §6 added and ID section amended 08/04/2016 | §7 added 22/05/2019 | §8 added 05/10/2020
