Your columbines have leafminers, a common insect pest of columbines, which tunnels through the leaves as it eats. It does not kill the plant or do significant damage to its health.
- Leafminers are insects that feed within a leaf, producing large blotches or meandering tunnels.
- Although leafminer injuries are conspicuous, most leafminers produce injuries that have little, if any, effect on plant health.
- Most leafminers have many natural controls that will normally provide good control of leafminers.
Here is our information on leafminers on vegetables, which is very similar to that on other plants:http://extension.umd.edu/growit/insects/leafminer