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Coleophora tricolor
Basil Thyme Case-bearer Walsingham, 1899
Coleophoridae
529 / 37.062
Photo © Mick Saunt,  Brecks July 2013

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Similar Species
Downland Case-bearer
Coleophora lixella
Wingspan: 16-19mm.
Flight: June - Aug.
Foodplant:   Basil thyme.
Nat Status: pRDB2
Verification Grade:  Adult: 3  Case: C3
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 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.

Recorded regularly at known Breckland 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 7 (9%) of 74 10k Squares.
First Recorded in 1873.
Last Recorded in 2023.

Latest 10 Records
Date#VC10kArea
11/09/2023228Confidential
30/08/2023728Confidential
30/08/2023928Confidential
28/06/2023128Confidential
05/07/20222028Confidential
05/07/2022228Confidential
05/07/20222328Confidential
02/07/2022+28Confidential
05/07/2021228Confidential
24/07/2020128Confidential
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