The Jelly Leg Colly (JLC) is basically Peter Carty’s Beadhead Coloburiscus nymph with Stretch Cord legs | Size: 12 | Weight: 2.5 mm tungsten bead & lead-wire

Coloburiscus humeralis, or spiny gilled mayfly nymphs, are found in cool, moderately stable stony streams throughout New Zealand. The naturals feature strongly in the diets of trout in many waterways, and good imitations are so different to regular patterns they are often the undoing of educated fish.  

Coloburiscus nymphs have very robust translucent legs that appear even larger and more translucent on account of a fringe of fine hairs used for filter feeding (see image). 

Viewed from below, with the light passing through them, they are likely to glow. 

Glowing brown Stretch Cord legs have such an impact on the overall underwater appearance of the modified imitation I named it the Jelly Leg Colly.           

Fishing Tip:  Fish it on the dropper of a tandem rig with a smaller pattern such as a crimp nymph on the point. 

Coloburiscus humeralis

Jelly Leg Collies underwater against an overcast sky