Photo © Mike Wall

Cnephasia pasiuana

Checklist Number
49.052 [B&F: 1022]

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

Classification

Family:Tortricidae
Subfamily:Tortricinae
Genus:Cnephasia
Species:pasiuana
Authority:(Hübner, [1799])

Local in gardens, woodland edges and other open areas throughout much of England, but rarer in the north; old records for Ireland, Wales and Scotland should be treated with caution. In Hampshire and on the Isle of Wight there has been an increase in the number of records received in the first decade of this century, almost certainly due to an increase in critical examination of specimens. However, the discovery that the closely related C. pumicana exists in Britain makes the verification of the true distribution of pasiuana in the county difficult and will require the re-evaluation of all historic records. Wingspan 15-20 mm. The obscure grey forewing pattern varying from pale to dark - most often pale - makes confirmed identification on external characteristics impossible, as it is indistinguishable from the closely related C. pumicana (recently added to the British list) and for pale specimens, from C. genitalana, and records can therefore only be accepted based on dissection of the genitalia. Larva feeds within flowerheads of various herbaceous plants, living between flowers spun together with silk.

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)

VC10 Isle of Wight

Site Date Quantity Recorder Stage
Freshwater (SZ38)1923-W FassnidgeAdult

VC11 South Hampshire

Site Date Quantity Recorder Stage
Teg Down, Winchester (SU42)08/06/1980-J R Langmaid, D H SterlingLarval
Soberton (SU61)13/07/1985oneJ R Langmaid, E C Pelham-ClintonAdult
Hamble Common (SU40)21/06/1993oneRichard J DicksonAdult
Portsmouth (SU60)15/07/1999oneIan ThirlwellAdult
Southsea (SZ69)15/07/1999oneJohn R LangmaidAdult
Chandlers Ford (SU42)16/07/2001oneBrian ElliottAdult
Winchester (SU42)26/06/2007oneTim WalkerAdult
Funtley (SU50)25/07/2010oneMaurice OpieAdult
Roydon Woods HIWWT NR, NF (SU30)26/07/2010oneRichard J DicksonAdult
Portsdown (SU60)23/05/2011oneJ R Langmaid, D J L AgassizLarval
Funtley (SU50)11/07/2011oneMaurice OpieAdult
Funtley (SU50)26/07/2012oneMaurice OpieAdult
Portsmouth (SU60)27/07/2012oneIan ThirlwellAdult
Eastney (SZ69)14/06/2016oneJ R Langmaid, R J Dickson, I R ThirlwellLarval
Eastney (SZ69)14/06/2016oneJohn R LangmaidLarval
Portsdown (SU60)04/06/2017-J R Langmaid, M R Young, I R ThirlwellLarval

VC12 North Hampshire

Site Date Quantity Recorder Stage
Greywell (SU75)23/07/2004onePaul BoswellAdult
Sherborne St John (SU65)01/08/2005oneNick MontegriffoAdult
Alton (SU73)05/07/2007twoDave OwenAdult
Alton (SU73)27/08/2008oneDave OwenAdult
Weston Colley (SU53)08/07/2010oneDavid G GreenAdult
Sherborne St John (SU65)16/07/2015oneNick MontegriffoAdult

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