The bad needles are a bit floppy and have a dulling cast from a distance but up close have light orangish striations. The orangish striations do not scrape off--it seems integral with the needle. Earlier I suspected spider mites and then thought this was post spider mite damage however it is increasing on one tree. There is currently no sign of spider mites via the paper test but earlier there was some evidence so I sprayed with a miticide and for 3 weeks I have seen no evidence of the mites--this all may be unrelated though. New grow is coming weakly and I have let it extend. It is pale green but does not seem stricken. I looked up larch needle blight and larch needle cast but nothing fits exactly. Has anyone seen this? At this point, I will be spraying with mancozeb fungicide maybe alternating with another.