Photo © Mike Wall

Bactra lacteana

Checklist Number
49.196 [B&F: 1111a]

Verification
Record requires retention of specimen until confirmed, and may require dissection. Consult with CMR if unsure

Classification

Family:Tortricidae
Subfamily:Olethreutinae
Genus:Bactra
Species:lacteana
Authority:Caradja, 1916

Nationally scarce (Nb) in damp meadows, marshes and on river-banks in parts of southern England. Only discovered in Britain in 1996, and the true extent of distribution not yet known. In Hampshire has been recorded in numbers on Plaitford Common (in vice-county 8, on the Hampshire-Wiltshire border) and at Ashurst. Not recorded from the Isle of Wight to date. Wingspan 10-17 mm. Similar to B. lancealana, from which reliably separated only by dissection of the genitalia, but specimens showing two short blackish sub-apical streaks are potentially this species. Larva feeds within stems of Sedge.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)

No Larval records to show.

VC8 Wiltshire (Hants county)

Site Date Quantity Recorder Stage
Plaitford Common (SU21)31/07/1998-J R Langmaid, S M PalmerAdult
Plaitford Common (SU21)06/08/1998-J R Langmaid, I R ThirlwellAdult
Plaitford Common (SU21)25/07/2001-J R Langmaid, B Elliott, B GoaterAdult

VC11 South Hampshire

Site Date Quantity Recorder Stage
Portsmouth (SU60)28/07/2005oneIan ThirlwellAdult
Ashurst, NF (SU31)24/07/2008-J R Langmaid, M R & J E Young, S M PalmerAdult
Dockens Water, Ringwood (SU11)02/06/2012nineChris LewisAdult
Stubbington (SU50)18/06/2013oneDan HoughtonAdult
Southsea (SZ69)18/06/2013oneJ R LangmaidAdult
Crab Tree Bog (SU20)28/07/2013oneAndrew AshworthAdult
Funtley (SU50)22/08/2013oneMaurice OpieAdult
South Gorley (SU11)05/08/2014twoScott HackettAdult
Southsea (SZ69)13/08/2014oneJ R LangmaidAdult
Burley, NF (SU20)01/08/2017oneAndrew AshworthAdult
Ashurst, NF (SU31)05/07/2018-J R Langmaid, M R YoungAdult
Horsea Island (SU60)24/07/2018oneMaurice OpieAdult