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49.194 ~ 1111 ~ Bactra lancealana ~ Rush Marble
UK Status

Resident. Widespread and very common throughout the British Isles.

Montgomeryshire Status

A widespread and very common species throughout the county.

Wingspan :   M & F, 11-20mm.

Confusion species

B. furfurana, B. lacteana and B. robustana.
Flight time & Voltinity (Bivoltine)


Bogs and marshes even at higher elevations.


Rush spp.

Lifestage data

Stem miner. Eggs laid on foodplant. Larva feeds within the stem. Pupates in a slight silken cocoon in the stem of the foodplant.
Montgomeryshire photos

Photo by MDH, 2nd Aug 2009, Llanfyllin

Photo by PRW, 29th May 2010, Commins Coch

Photo by PB, 20th Aug 2012, Cors Dyfi

Photo by PRW, 1st Aug 2014, Commins Coch