CU SA of wingless salmonfly sitting still on side of tree. Shot of winged salmonfly sitting still on side of tree, crawling over wingless salmonfly, wingless then beginning to crawl up tree as winged crawls in opposite direction and exits frame bottom (white background). VAR (including CUs, ECUs, ZOOMs, HA, LA, RA) of salmonflies sitting, crawling, mating on green tips of evergreen tree branches, one to three salmonflies per frame. Shots concentrating on two salmonflies mating, green pine(?) needles, out-of-focus river and sky in background. (42084)