Similar to the RH Stepchild http://www.flyanglersonline.com/bb/showthread.php?48119-Red-Headed-Stepchild-SBS with a few small changes. Tied here as a PMD; change colors to suit your needs.
hook - Dai Riki 135 #16
thread - MFC 8/0 rusty brown
Tail - mallard dyed-rust
rib - UTC wire small copper
flashback - Mylar tinsel medium pearl
abdomen - tying thread
thorax - rust rabbit/hare’s ear antron mix
legs - Midge Krystal Flash pearl
head - glass bead rootbeer
Regards,
Scott
Good bug, nice tie. You may find that as you get into the smaller sizes, midge Krystal Flash for the legs works a little better than the standard size.
Agreed; that’s why I used it here. Anything from a #16 on down.
Regards,
Scott
With a name like that, I was expecting a fly with 4 propellers on it (like a B-17) or at least a leather jacket. 
Regards,
Ed
Oops, didn’t notice. Photo made it look like standard size to my eye. Try them in olive as well if you haven’t already. Excellent pattern for small mays, although I only fish them #18 and smaller.