I was fishing some spring fed ponds yesterday and encountered an emergence that triggered a feeding response similar to that which I have observed when chironomid pupae are emerging.. there was lots of feeding near the surface (boils) and some in the surface film feeding with an odd "eat" of something on top of the surface... and (because of the water clarity and depth) I could see trout on the "hunt" eating something subsurface as they were cruising... they would just open their mouths and eat something about midway between the surface and bottom of the pond... On the surface I discovered an olive colored adult insect (18-20) with a wing configuration similar to a an adult chironomid and in a throat sample I took there were what appeared to be chironomid pupae but no white gills.. and these pupae moved or behaved differently.... in the vial they would "coil and re-coil".. convulsing in place if you will before pausing momentarily before starting again.. it was a very "spastic" motion that did not resemble the movement of chironomid pupae I have obtained through such samples.. I also took in the sample some of what appeared to be more "worm-like" in appearance- thicker and little to no taper in its body profile. .. assumed maybe it was the larval form of this bug... I have seen it show up in samples from time to time when fishing stillwaters, but the selectivity induced during the emergence of this bug has captured my interest. Any ideas on what it could be?