A tiny Lacewing insect species, seen during a day of botanizing at Patrick Brennan's ranch on 25th July. There are four or so species of Lacewings in Alberta, but I'm not sure which particular one this is. Lacewings are predators, eating mostly aphids. John Acorn, in his book "Bugs of Alberta", describes them as "beautiful, smelly and mean".

en.wikipedia.org/wiki/Chrysopidae