Will be good to know your budget to see what combination you can afford. =)
You can go with the 100mm Macro f2.8 from Canon which is really good if you can afford it.
Unless you are going for L quality tele, i also recommend the 55-250mm IS to complement the kit lens that you are having =)
A cheap alternative to macro lens will be a 50mm prime + raynox / extension tubes (which is currently my set up)