The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
Chloride epithelium: An area of of tissue specialized for ion absorption on the surface of the skin of many caddisfly larvae, evident as light-colored patch (typically oval-shaped) surrounded by a very thin line of darker, sclerotized tissue. Chloride epithelia are most often found on the ventralabdominal segments but may also be found on the dorsal or lateral aspects.
This other word references the same concept: chloride epithelia.
