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Coleophora tricolor
Basil-thyme Case-bearer Walsingham, 1899
Coleophoridae
529 / 37.062
Photo © Rob Lee,  Brecks 13/07/2016

Similar Norfolk Species
Downland Case-bearer
Coleophora lixella
Wingspan: 16-19mm.
Season: June - Aug.
Foodplant:   Basil thyme.
Nat Status: pRDB2
Verification Grade:  Adult: 3  Case: C3
Norfolk Status
Extremely rare species.
Occurs in Breckland on poor scantily covered grassland on calcareous soils. Diurnal flying especially towards dusk.

Similar to Coleophora lixella, but shows a long brown basal tuft on brown/white fully ringed antennae.

Discovered in the UK near Merton, Norfolk in 1899 where it was recorded sparingly in the area until 1914, then went unrecorded for 50 years!

For 10 years, up until funding ceased in 2011, a confidential Butterfly Conservation larval survey by Gerry Haggett, monitored the population annually in the Norfolk and Suffolk Brecks.

Caterpillars were originally found at just two sites, and adults at a third. However, the research and survey work discovered strong populations at a number of smaller sites.

New UK BAP priority species.

Verification Grade Comment: Adult: If photos, all complex antennal differences to exclude C. lixella must be visible

Retained Specimen / Photograph will be Required.

Case: A good quality photo or specimen of the case and plant/pabulum and the bred moth is required.

Recorded in 6 (9%) of 69 10k Squares.
First Recorded in 1873.
Last Recorded in 2019.

Latest 5 Records
Date#VC10k Area
09/07/2019228Confidential
08/07/2019428Confidential
24/08/2018428Confidential
08/07/2017128Confidential
08/07/2017328Confidential
Further info: Coleophora tricolor
 
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Mothdissection UK
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