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The Horse Chestnut Leaf Miner Moth (Cameraria ohridella) arrived in southern regions of the United Kingdom during 2002-2003 and has steadily spread north. The moth reproduces in large numbers, with 200-300 eggs typically laid on each leaf from May to August. Damage is caused by the larvae of the moths, as they mine into the leaves of the trees. The moths often merge which gives the Horse Chestnut leaves a white and blotched appearance. The leaves will then dry out, browning, before they fall off the tree prematurely. This causes the tree to have an autumnal appearance as early as August. The long terms effects on the Horse Chestnut Tree are still being examined, but the trees do appear weakened and therefore more vulnerable to attack from pathogens and diseases.
The Dragonfli Horse Chestnut Leaf Miner Pheromone Trap uses a species specific pheromone lure to catch and trap male Horse Chestnut Leaf Miner Moths. The moths will detect the pheromone and fly into the trap expecting a female Horse Chestnut Leaf Miner Moth to be present. Moth mating and egg laying will be reduced as a result, and future generations of larvae will be prevented from developing. Moth populations can also be monitored through this trap which will help provide you with an early warning as to their activity. The trap is capable of catching hundreds of Horse Chestnut Leaf Miner Moths and significantly reducing damage to leaves and trees.
The Large Horse Chestnut Leaf Miner Trap has been designed specifically to attract and catch higher numbers of the Horse Chestnut Leaf Miner Moth. It can be purchased as an alternative to, or used in combination with, our standard sized Horse Chestnut Leaf Miner Trap. This larger trap should be used in large or mature Horse Chestnut Trees which have a lot of leaf canopy.
Each trap is supplied with three pheromone lures to last an entire Horse Chestnut Leaf Miner season. These are the same lures used for our standard sized Horse Chestnut Leaf Miner Traps. Simply remove the lure from the foil sachet and place it in the cage at the top of the trap.
The Large Horse Chestnut Leaf Miner Trap supplied by Dragonfli is a large funnel trap which is entirely glue free. It also only has holes big enough for moths which prevents the capture of larger insects and small birds, which might fly into a conventional trap by accident. The funnel trap should be filled with water so that when the Horse Chestnut Leaf Miner Moth enters the trap it will fall into the water and drown. The trap utilises an opaque bowl allowing for inspection of successful catches.
Hang the traps from the trees you wish to treat for infestation.
Full application instructions are provided on delivery.
Hang one trap per large tree from April.
The trap can be used for years and replacement lures can be purchased separately here.
Each trap comes with three pheromone lures, each of which last up to 6 weeks, giving the trap an initial 18-week protection. The pheromone lures should be replaced 2 to 3 times between April and August to catch as many hatching generations as possible.