49.051 Cnephasia asseclana (Flax Tortrix)
ws: 15-18mm; Jun-Aug; polyphagous on herbaceous plants; common throughout GB except N.Scotland
Synonyms: C.interjectana (BTM), C.virgaureana (Pierce & Metcalfe)
Synonyms: C.interjectana (BTM), C.virgaureana (Pierce & Metcalfe)
Cnephasia asseclana §1 male
ID: Generally smaller than C.stephensiana and usually has a stronger more variegated forewing pattern than C.pasiuana/pumicana. ID may be suggested by the basal fascia being produced distally to such an extent that it connects with, or almost connects with, the median fascia and by the pre-apical spot also being connected to the median fascia. However, this is a very variable species and genital dissection is required for confident identification.
There seems to be considerable variation in iris colour from pale to dark and, in specimen §1, red. I don't think this is just a flash effect.
Male genitalia: sacculus long (same length as valva) and slightly curved at tip. The only other species with a sacculus this long is C.genitalana in which it is strongly curved at the tip.
Female genitalia: sterigma with a more or less straight posteirior margin, not notched or bowed; colliculum weakly sclerotised and narrows towards DB.
There seems to be considerable variation in iris colour from pale to dark and, in specimen §1, red. I don't think this is just a flash effect.
Male genitalia: sacculus long (same length as valva) and slightly curved at tip. The only other species with a sacculus this long is C.genitalana in which it is strongly curved at the tip.
Female genitalia: sterigma with a more or less straight posteirior margin, not notched or bowed; colliculum weakly sclerotised and narrows towards DB.
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§1 Westcliff-on-sea, Essex; 02/07/2008; male; fw 8.3mm
§2 Westcliff-on-sea, Essex; 02/07/2010; male; fw 7.2mm §3 Foulness, Essex; 29/05/2011; female; fw 7.4mm §4 Foulness, Essex; 12/06/2011; male §5 Foulness, Essex; 14/06/2011; female §6 Westcliff-on-sea, Essex; 29/06/2013; male; fw 7.5mm §7 Fersit, Inverness-shire; 01/08/2013; female; fw 7.6mm §8 Brampton Wood, Cambridgeshire; 11/06/2014; fw 8.9mm §9 Winterton, Norfolk; 09/07/2015; male; fw 8.2mm; to light All images © Chris Lewis |
§10 Westcliff-on-sea, Essex; 12/06/2015; female; fw 8.5mm; to light
§11 Romansleigh, Devon; 27/06/2016; male; fw 8.2mm; to light §12 Orlestone Forest, Kent; 07/07/2019; male; fw 6.6mm; to light §13 Pound Wood, Essex; 30/06/2019; female; fw 7.9mm; to light §14 Orlestone Forest, Kent; 24/06/2020; female; fw 8.4mm; to light §15 Westcliff-on-sea, Essex; 03/07/2021; female; fw 7.4mm §16 Maol Chean-dearg, Ross & Cromarty; 24/06/2022; female; fw 9.0mm; netted by day §17 Loch Fyne, Argyll; 29/07/2022; male; fw 8.1mm |
Page published 24/05/2012 | §6 added 13/07/2013 | §7 added 28/12/2013 | §8 added 04/02/2015 | §9 added 01/01/2016 |
§10 added 06/02/2016 | §11 added 23/02/2017 | §12 added 31/01/2020 | §13 added 20/02/2020 | §14 added 27/01/2021 |
§15 added 29/11/21 | §16 added 08/10/2022 | §17 added 22/12/2022
§10 added 06/02/2016 | §11 added 23/02/2017 | §12 added 31/01/2020 | §13 added 20/02/2020 | §14 added 27/01/2021 |
§15 added 29/11/21 | §16 added 08/10/2022 | §17 added 22/12/2022
