I have a young Golden Nugget tree and it's putting out a growth flush as we speak, young leaves and some blooms. It was nipped by a hungry deer a month ago, which may explain the flush. But I just checked yesterday and found leaf miner trails on very young leaves (1/2" long). The night temps have been in the low 40's for the past month, so that's apparently not enough to stop these little buggers. This tree is about 20 ft from my pheromone trap, but below it on a hillside.

I've been using my finger/nail to remove the trails/trailees, but it's hard to do that and not break the small leaves.

I have had active miner in early Jan--it seems to take freezing weather to stop them--at least here.

I'm surprised your trap is not stopping them, but then it only attracts the males, so if there is a source of fertile females, it may not help much. Is the bait very old?

John Panzarella doesn't recommend the traps

http://sites.google.com/site/johnpanza/citrusleafminer

He is reporting the results of one person. That person may have a continuous supply of miners from a neighbor that is uncontrolled. I can only report what happened in my yard where one trap (moved from tree to tree) seemed to be pretty effective last fall. I don't think John is correct about why there is minor damage on the first flush--I think winter kill of the moths has much more to do with it than any consideration the miners have for the tree.

Damage from miners this year was very mild compared to the previous year. I really did not notice any damage until fall. Though there were other insects that I had to deal with.

Because citrus leafminer populations decline to nearly undetectable levels over the winter, the first flush interval has very few citrus leafminers and a relatively low rate of parasitism by a predator wasp called A. citricola. Citrus leafminer populations typically increase in the second flush and, if the wasp populations lags behind, this generation of the leafminer can increase dramatically. Fortunately, here in Colorado due to our sever winters, we do not have leafminers. - Millet (1,134-)