Cameraria ohridella Mines on Horse Chestnut
Posted: Sun Oct 12, 2008 5:15 pm
Cameraria ohridella Mines on Horse Chestnut:
The mines of the micro-moth (Cameraria ohridella) were locally frequent on a Horse Chestnut (Aesculus hippocastanum) tree's leaves today (Sunday 12th October 2008) in Victoria Park, Widnes (Grid Ref.: SJ51508638). This moth has spread northwards since its colonisation of South East England a few years ago (2002).
The mines tend to lie between the veins of the leaf, at least in the early stages, and so look diagonal. Further information can be found at: (http://ukmoths.org.uk/show.php?bf=366a).
The only possible confusion could be with the blotches caused by the fungus (Guignardia aesculi) which also attacks Horse Chestnut leaves at this time of year (late Summer into Autumn) - see below for a picture). These blotches are very dark brown, go across veins as though they do not exist, and have a bright yellow corona around the brown blotch.
Steve
The mines of the micro-moth (Cameraria ohridella) were locally frequent on a Horse Chestnut (Aesculus hippocastanum) tree's leaves today (Sunday 12th October 2008) in Victoria Park, Widnes (Grid Ref.: SJ51508638). This moth has spread northwards since its colonisation of South East England a few years ago (2002).
The mines tend to lie between the veins of the leaf, at least in the early stages, and so look diagonal. Further information can be found at: (http://ukmoths.org.uk/show.php?bf=366a).
The only possible confusion could be with the blotches caused by the fungus (Guignardia aesculi) which also attacks Horse Chestnut leaves at this time of year (late Summer into Autumn) - see below for a picture). These blotches are very dark brown, go across veins as though they do not exist, and have a bright yellow corona around the brown blotch.
Steve