In Great Britain, this moth has only ever been recorded in modern times from the Brecklands of Suffolk and Norfolk. Until recently, caterpillars had been found at just two sites, and adults at a third (2). However, recent research and survey work has discovered strong populations and a number of smaller sites (4). At one of the sites in Suffolk, the habitat has become unsuitable for the species, and it has not been seen there since the 1970s (2). Elsewhere, the Basil-thyme Case-bearer has only been recorded from one site in Switzerland (2), and from two locations in Estonia (6).
![]() | You can view distribution information for this species at the National Biodiversity Network Gateway. |
Inhabits unimproved grasslands of light grasses, forest tracks and wartime hard-standings (4).