49.025 Pandemis cerasana (Barred Fruit-tree Tortrix)
ws: M:16-22mm, F:16-24mm; Jun-Aug; various fruit trees; common throughout GB
Synonym: P.ribeana (Pierce & Metcalfe)
Synonym: P.ribeana (Pierce & Metcalfe)
Pandemis cerasana §8
ID: The 5 British Pandemis species are similar.
P.corylana has an oblique distal margin to the basal fascia so that it is more or less parallel with the proximal margin of the median fascia.
P.cinnamomeana also has an oblique distal margin to the basal fascia; the male has a white frons and the female has a reddish tinge to the hindwing apex.
P.heparana has an angular projection of the proximal margin of the median fascia.
Both P.cinnamomeana and P.heparana have a darker red-brown ground colour than most examples of P.cerasana
P.dumetana usually has a distinct dark stria from the triangular pre-apical spot towards the tornus; it has a whitish/pale grey hindwing.
P.cerasana varies in: forewing colour from pale ochreous-yellow to greyish brown; degree of reticulation; extent of any dark suffusion; and straightness of borders of the median fascia, though any projection of the proximal margin is smooth rather than angular and the distal margin is usually straighter than in P.heparana.
Choristoneura species also seem similar. They have an oblique distal margin to the basal fascia.
Male Genitalia: All Pandemis species are illustrated in Pierce and Metcalfe and all except P.dumetana are shown at dissection group.
P.heparana is the only one of these species to show a projecting rather than notched apex to the uncus. The images at Moth Dissection show an indented lateral margin to the valva in P.corylana and P.cinnamomeana but not in P.cerasana. From the description in Pierce and Metcalfe it is possible that P.dumetana can be distinguished by the apex of the sacculus projecting slightly from the margin of the valva.
P.corylana has an oblique distal margin to the basal fascia so that it is more or less parallel with the proximal margin of the median fascia.
P.cinnamomeana also has an oblique distal margin to the basal fascia; the male has a white frons and the female has a reddish tinge to the hindwing apex.
P.heparana has an angular projection of the proximal margin of the median fascia.
Both P.cinnamomeana and P.heparana have a darker red-brown ground colour than most examples of P.cerasana
P.dumetana usually has a distinct dark stria from the triangular pre-apical spot towards the tornus; it has a whitish/pale grey hindwing.
P.cerasana varies in: forewing colour from pale ochreous-yellow to greyish brown; degree of reticulation; extent of any dark suffusion; and straightness of borders of the median fascia, though any projection of the proximal margin is smooth rather than angular and the distal margin is usually straighter than in P.heparana.
Choristoneura species also seem similar. They have an oblique distal margin to the basal fascia.
Male Genitalia: All Pandemis species are illustrated in Pierce and Metcalfe and all except P.dumetana are shown at dissection group.
P.heparana is the only one of these species to show a projecting rather than notched apex to the uncus. The images at Moth Dissection show an indented lateral margin to the valva in P.corylana and P.cinnamomeana but not in P.cerasana. From the description in Pierce and Metcalfe it is possible that P.dumetana can be distinguished by the apex of the sacculus projecting slightly from the margin of the valva.
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§1 New Forest, Hampshire; 27/06/2008
§2 Foulness, Essex; 29/06/2008; fw 11.2mm §3 Foulness, Essex; 14/06/2009; fw 10.6mm §4 Westcliff-on-sea, Essex; 10/06/2010; male §5 Cyffdy Farm, Gwynedd; 22/06/2010; male §6 Foulness, Essex; 12/06/2011; fw 8.5mm §7 Bridge of Awe, Argyll; 25/06/2010 §8 Kinlochleven, Argyll; 03/07/2011 §9 Glen Urquart, Inverness-shire; 18/07/2012; male All images © Chris Lewis |
§10 Bookham Common, Surrey; 16/07/2013; female; fw 11.0mm
§11 Foulness, Essex; 07/06/2014; male; fw 8.9mm §12 Foulness, Essex; 11/06/2016; male; fw 9.0mm §13 New Forest, Hampshire; 18/06/2016 §14 Orlestone Forest, Kent; 04/06/2019; male §15 Foulness, Essex; 30/05/2020; female; fw 10.5mm §16 Orlestone Forest, Kent; 17/06/2020; male; fw 9.3mm |
Page published 07/05/2012 | §9 added 09/11/2012 | §10 added 01/12/2013 | §11 added 22/01/2015 | §12 added 10/05/2017 |
§13 added 21/05/2017 | §14 added 01/01/2020 | §15 added 10/06/2020 | §16 aded 24/01/2021
§13 added 21/05/2017 | §14 added 01/01/2020 | §15 added 10/06/2020 | §16 aded 24/01/2021
